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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
4c38e0a4 | 3 | Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea DJ |
33 | |
34 | #include "gdb_assert.h" | |
123dc839 DJ |
35 | #include "gdb_obstack.h" |
36 | #include "hashtab.h" | |
424163ea DJ |
37 | |
38 | /* Types. */ | |
39 | ||
29709017 DJ |
40 | typedef struct property |
41 | { | |
23181151 DJ |
42 | char *key; |
43 | char *value; | |
29709017 DJ |
44 | } property_s; |
45 | DEF_VEC_O(property_s); | |
46 | ||
123dc839 DJ |
47 | /* An individual register from a target description. */ |
48 | ||
49 | typedef struct tdesc_reg | |
50 | { | |
51 | /* The name of this register. In standard features, it may be | |
52 | recognized by the architecture support code, or it may be purely | |
53 | for the user. */ | |
54 | char *name; | |
55 | ||
56 | /* The register number used by this target to refer to this | |
57 | register. This is used for remote p/P packets and to determine | |
58 | the ordering of registers in the remote g/G packets. */ | |
59 | long target_regnum; | |
60 | ||
61 | /* If this flag is set, GDB should save and restore this register | |
62 | around calls to an inferior function. */ | |
63 | int save_restore; | |
64 | ||
65 | /* The name of the register group containing this register, or NULL | |
66 | if the group should be automatically determined from the | |
67 | register's type. If this is "general", "float", or "vector", the | |
68 | corresponding "info" command should display this register's | |
69 | value. It can be an arbitrary string, but should be limited to | |
70 | alphanumeric characters and internal hyphens. Currently other | |
71 | strings are ignored (treated as NULL). */ | |
72 | char *group; | |
73 | ||
74 | /* The size of the register, in bits. */ | |
75 | int bitsize; | |
76 | ||
77 | /* The type of the register. This string corresponds to either | |
78 | a named type from the target description or a predefined | |
79 | type from GDB. */ | |
80 | char *type; | |
81 | ||
82 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 83 | struct tdesc_type *tdesc_type; |
123dc839 DJ |
84 | } *tdesc_reg_p; |
85 | DEF_VEC_P(tdesc_reg_p); | |
86 | ||
87 | /* A named type from a target description. */ | |
ad068eab UW |
88 | |
89 | typedef struct tdesc_type_field | |
90 | { | |
91 | char *name; | |
92 | struct tdesc_type *type; | |
93 | } tdesc_type_field; | |
94 | DEF_VEC_O(tdesc_type_field); | |
95 | ||
96 | typedef struct tdesc_type | |
97 | { | |
98 | /* The name of this type. */ | |
99 | char *name; | |
100 | ||
101 | /* Identify the kind of this type. */ | |
102 | enum | |
103 | { | |
104 | /* Predefined types. */ | |
105 | TDESC_TYPE_INT8, | |
106 | TDESC_TYPE_INT16, | |
107 | TDESC_TYPE_INT32, | |
108 | TDESC_TYPE_INT64, | |
109 | TDESC_TYPE_INT128, | |
110 | TDESC_TYPE_UINT8, | |
111 | TDESC_TYPE_UINT16, | |
112 | TDESC_TYPE_UINT32, | |
113 | TDESC_TYPE_UINT64, | |
114 | TDESC_TYPE_UINT128, | |
115 | TDESC_TYPE_CODE_PTR, | |
116 | TDESC_TYPE_DATA_PTR, | |
117 | TDESC_TYPE_IEEE_SINGLE, | |
118 | TDESC_TYPE_IEEE_DOUBLE, | |
119 | TDESC_TYPE_ARM_FPA_EXT, | |
120 | ||
121 | /* Types defined by a target feature. */ | |
122 | TDESC_TYPE_VECTOR, | |
123 | TDESC_TYPE_UNION | |
124 | } kind; | |
125 | ||
126 | /* Kind-specific data. */ | |
127 | union | |
128 | { | |
129 | /* Vector type. */ | |
130 | struct | |
131 | { | |
132 | struct tdesc_type *type; | |
133 | int count; | |
134 | } v; | |
135 | ||
136 | /* Union type. */ | |
137 | struct | |
138 | { | |
139 | VEC(tdesc_type_field) *fields; | |
140 | } u; | |
141 | } u; | |
142 | } *tdesc_type_p; | |
143 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
144 | |
145 | /* A feature from a target description. Each feature is a collection | |
146 | of other elements, e.g. registers and types. */ | |
147 | ||
148 | typedef struct tdesc_feature | |
149 | { | |
150 | /* The name of this feature. It may be recognized by the architecture | |
151 | support code. */ | |
152 | char *name; | |
153 | ||
154 | /* The registers associated with this feature. */ | |
155 | VEC(tdesc_reg_p) *registers; | |
156 | ||
157 | /* The types associated with this feature. */ | |
ad068eab | 158 | VEC(tdesc_type_p) *types; |
123dc839 DJ |
159 | } *tdesc_feature_p; |
160 | DEF_VEC_P(tdesc_feature_p); | |
161 | ||
e35359c5 UW |
162 | /* A compatible architecture from a target description. */ |
163 | typedef const struct bfd_arch_info *arch_p; | |
164 | DEF_VEC_P(arch_p); | |
165 | ||
123dc839 DJ |
166 | /* A target description. */ |
167 | ||
424163ea DJ |
168 | struct target_desc |
169 | { | |
23181151 DJ |
170 | /* The architecture reported by the target, if any. */ |
171 | const struct bfd_arch_info *arch; | |
172 | ||
08d16641 PA |
173 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
174 | otherwise. */ | |
175 | enum gdb_osabi osabi; | |
176 | ||
e35359c5 UW |
177 | /* The list of compatible architectures reported by the target. */ |
178 | VEC(arch_p) *compatible; | |
179 | ||
29709017 DJ |
180 | /* Any architecture-specific properties specified by the target. */ |
181 | VEC(property_s) *properties; | |
123dc839 DJ |
182 | |
183 | /* The features associated with this target. */ | |
184 | VEC(tdesc_feature_p) *features; | |
185 | }; | |
186 | ||
187 | /* Per-architecture data associated with a target description. The | |
188 | target description may be shared by multiple architectures, but | |
189 | this data is private to one gdbarch. */ | |
190 | ||
ad068eab UW |
191 | typedef struct tdesc_arch_reg |
192 | { | |
193 | struct tdesc_reg *reg; | |
194 | struct type *type; | |
195 | } tdesc_arch_reg; | |
196 | DEF_VEC_O(tdesc_arch_reg); | |
197 | ||
123dc839 DJ |
198 | struct tdesc_arch_data |
199 | { | |
ad068eab | 200 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
201 | During initialization of the gdbarch this list is used to store |
202 | registers which the architecture assigns a fixed register number. | |
203 | Registers which are NULL in this array, or off the end, are | |
204 | treated as zero-sized and nameless (i.e. placeholders in the | |
205 | numbering). */ | |
ad068eab | 206 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
207 | |
208 | /* Functions which report the register name, type, and reggroups for | |
209 | pseudo-registers. */ | |
210 | gdbarch_register_name_ftype *pseudo_register_name; | |
211 | gdbarch_register_type_ftype *pseudo_register_type; | |
212 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
213 | }; |
214 | ||
215 | /* Global state. These variables are associated with the current | |
216 | target; if GDB adds support for multiple simultaneous targets, then | |
217 | these variables should become target-specific data. */ | |
218 | ||
219 | /* A flag indicating that a description has already been fetched from | |
220 | the current target, so it should not be queried again. */ | |
221 | ||
222 | static int target_desc_fetched; | |
223 | ||
224 | /* The description fetched from the current target, or NULL if the | |
225 | current target did not supply any description. Only valid when | |
226 | target_desc_fetched is set. Only the description initialization | |
227 | code should access this; normally, the description should be | |
228 | accessed through the gdbarch object. */ | |
229 | ||
230 | static const struct target_desc *current_target_desc; | |
231 | ||
23181151 DJ |
232 | /* Other global variables. */ |
233 | ||
234 | /* The filename to read a target description from. */ | |
235 | ||
236 | static char *target_description_filename; | |
237 | ||
123dc839 DJ |
238 | /* A handle for architecture-specific data associated with the |
239 | target description (see struct tdesc_arch_data). */ | |
240 | ||
241 | static struct gdbarch_data *tdesc_data; | |
242 | ||
424163ea DJ |
243 | /* Fetch the current target's description, and switch the current |
244 | architecture to one which incorporates that description. */ | |
245 | ||
246 | void | |
247 | target_find_description (void) | |
248 | { | |
249 | /* If we've already fetched a description from the target, don't do | |
250 | it again. This allows a target to fetch the description early, | |
251 | during its to_open or to_create_inferior, if it needs extra | |
252 | information about the target to initialize. */ | |
253 | if (target_desc_fetched) | |
254 | return; | |
255 | ||
256 | /* The current architecture should not have any target description | |
257 | specified. It should have been cleared, e.g. when we | |
258 | disconnected from the previous target. */ | |
1cf3db46 | 259 | gdb_assert (gdbarch_target_desc (target_gdbarch) == NULL); |
424163ea | 260 | |
23181151 DJ |
261 | /* First try to fetch an XML description from the user-specified |
262 | file. */ | |
263 | current_target_desc = NULL; | |
264 | if (target_description_filename != NULL | |
265 | && *target_description_filename != '\0') | |
266 | current_target_desc | |
267 | = file_read_description_xml (target_description_filename); | |
268 | ||
269 | /* Next try to read the description from the current target using | |
270 | target objects. */ | |
271 | if (current_target_desc == NULL) | |
272 | current_target_desc = target_read_description_xml (¤t_target); | |
273 | ||
274 | /* If that failed try a target-specific hook. */ | |
275 | if (current_target_desc == NULL) | |
276 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
277 | |
278 | /* If a non-NULL description was returned, then update the current | |
279 | architecture. */ | |
280 | if (current_target_desc) | |
281 | { | |
282 | struct gdbarch_info info; | |
283 | ||
284 | gdbarch_info_init (&info); | |
285 | info.target_desc = current_target_desc; | |
286 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
287 | warning (_("Architecture rejected target-supplied description")); |
288 | else | |
289 | { | |
290 | struct tdesc_arch_data *data; | |
291 | ||
1cf3db46 | 292 | data = gdbarch_data (target_gdbarch, tdesc_data); |
123dc839 | 293 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 294 | && data->arch_regs == NULL) |
123dc839 DJ |
295 | warning (_("Target-supplied registers are not supported " |
296 | "by the current architecture")); | |
297 | } | |
424163ea DJ |
298 | } |
299 | ||
300 | /* Now that we know this description is usable, record that we | |
301 | fetched it. */ | |
302 | target_desc_fetched = 1; | |
303 | } | |
304 | ||
305 | /* Discard any description fetched from the current target, and switch | |
306 | the current architecture to one with no target description. */ | |
307 | ||
308 | void | |
309 | target_clear_description (void) | |
310 | { | |
311 | struct gdbarch_info info; | |
312 | ||
313 | if (!target_desc_fetched) | |
314 | return; | |
315 | ||
316 | target_desc_fetched = 0; | |
317 | current_target_desc = NULL; | |
318 | ||
319 | gdbarch_info_init (&info); | |
320 | if (!gdbarch_update_p (info)) | |
321 | internal_error (__FILE__, __LINE__, | |
322 | _("Could not remove target-supplied description")); | |
323 | } | |
324 | ||
325 | /* Return the global current target description. This should only be | |
326 | used by gdbarch initialization code; most access should be through | |
327 | an existing gdbarch. */ | |
328 | ||
329 | const struct target_desc * | |
330 | target_current_description (void) | |
331 | { | |
332 | if (target_desc_fetched) | |
333 | return current_target_desc; | |
334 | ||
335 | return NULL; | |
336 | } | |
e35359c5 UW |
337 | |
338 | /* Return non-zero if this target description is compatible | |
339 | with the given BFD architecture. */ | |
340 | ||
341 | int | |
342 | tdesc_compatible_p (const struct target_desc *target_desc, | |
343 | const struct bfd_arch_info *arch) | |
344 | { | |
345 | const struct bfd_arch_info *compat; | |
346 | int ix; | |
347 | ||
348 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
349 | ix++) | |
350 | { | |
351 | if (compat == arch | |
352 | || arch->compatible (arch, compat) | |
353 | || compat->compatible (compat, arch)) | |
354 | return 1; | |
355 | } | |
356 | ||
357 | return 0; | |
358 | } | |
23181151 DJ |
359 | \f |
360 | ||
123dc839 | 361 | /* Direct accessors for target descriptions. */ |
424163ea | 362 | |
29709017 DJ |
363 | /* Return the string value of a property named KEY, or NULL if the |
364 | property was not specified. */ | |
365 | ||
366 | const char * | |
367 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
368 | { | |
369 | struct property *prop; | |
370 | int ix; | |
371 | ||
372 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
373 | ix++) | |
374 | if (strcmp (prop->key, key) == 0) | |
375 | return prop->value; | |
376 | ||
377 | return NULL; | |
378 | } | |
379 | ||
23181151 DJ |
380 | /* Return the BFD architecture associated with this target |
381 | description, or NULL if no architecture was specified. */ | |
382 | ||
383 | const struct bfd_arch_info * | |
384 | tdesc_architecture (const struct target_desc *target_desc) | |
385 | { | |
386 | return target_desc->arch; | |
387 | } | |
08d16641 PA |
388 | |
389 | /* Return the OSABI associated with this target description, or | |
390 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
391 | ||
392 | enum gdb_osabi | |
393 | tdesc_osabi (const struct target_desc *target_desc) | |
394 | { | |
395 | return target_desc->osabi; | |
396 | } | |
397 | ||
23181151 DJ |
398 | \f |
399 | ||
123dc839 DJ |
400 | /* Return 1 if this target description includes any registers. */ |
401 | ||
402 | int | |
403 | tdesc_has_registers (const struct target_desc *target_desc) | |
404 | { | |
405 | int ix; | |
406 | struct tdesc_feature *feature; | |
407 | ||
408 | if (target_desc == NULL) | |
409 | return 0; | |
410 | ||
411 | for (ix = 0; | |
412 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
413 | ix++) | |
414 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
415 | return 1; | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | /* Return the feature with the given name, if present, or NULL if | |
421 | the named feature is not found. */ | |
422 | ||
423 | const struct tdesc_feature * | |
424 | tdesc_find_feature (const struct target_desc *target_desc, | |
425 | const char *name) | |
426 | { | |
427 | int ix; | |
428 | struct tdesc_feature *feature; | |
429 | ||
430 | for (ix = 0; | |
431 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
432 | ix++) | |
433 | if (strcmp (feature->name, name) == 0) | |
434 | return feature; | |
435 | ||
436 | return NULL; | |
437 | } | |
438 | ||
439 | /* Return the name of FEATURE. */ | |
440 | ||
441 | const char * | |
442 | tdesc_feature_name (const struct tdesc_feature *feature) | |
443 | { | |
444 | return feature->name; | |
445 | } | |
446 | ||
ad068eab UW |
447 | /* Predefined types. */ |
448 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 449 | { |
ad068eab UW |
450 | { "int8", TDESC_TYPE_INT8 }, |
451 | { "int16", TDESC_TYPE_INT16 }, | |
452 | { "int32", TDESC_TYPE_INT32 }, | |
453 | { "int64", TDESC_TYPE_INT64 }, | |
454 | { "int128", TDESC_TYPE_INT128 }, | |
455 | { "uint8", TDESC_TYPE_UINT8 }, | |
456 | { "uint16", TDESC_TYPE_UINT16 }, | |
457 | { "uint32", TDESC_TYPE_UINT32 }, | |
458 | { "uint64", TDESC_TYPE_UINT64 }, | |
459 | { "uint128", TDESC_TYPE_UINT128 }, | |
460 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
461 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
462 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
463 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
464 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT } | |
465 | }; | |
81adfced | 466 | |
123dc839 DJ |
467 | /* Return the type associated with ID in the context of FEATURE, or |
468 | NULL if none. */ | |
469 | ||
ad068eab | 470 | struct tdesc_type * |
123dc839 DJ |
471 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
472 | { | |
473 | int ix; | |
ad068eab | 474 | struct tdesc_type *type; |
123dc839 DJ |
475 | |
476 | /* First try target-defined types. */ | |
ad068eab UW |
477 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
478 | if (strcmp (type->name, id) == 0) | |
479 | return type; | |
123dc839 | 480 | |
81adfced DJ |
481 | /* Next try the predefined types. */ |
482 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
483 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 484 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
485 | |
486 | return NULL; | |
487 | } | |
ad068eab UW |
488 | |
489 | /* Construct, if necessary, and return the GDB type implementing target | |
490 | type TDESC_TYPE for architecture GDBARCH. */ | |
491 | ||
492 | static struct type * | |
493 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
494 | { | |
495 | switch (tdesc_type->kind) | |
496 | { | |
497 | /* Predefined types. */ | |
498 | case TDESC_TYPE_INT8: | |
df4df182 | 499 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
500 | |
501 | case TDESC_TYPE_INT16: | |
df4df182 | 502 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
503 | |
504 | case TDESC_TYPE_INT32: | |
df4df182 | 505 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
506 | |
507 | case TDESC_TYPE_INT64: | |
df4df182 | 508 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
509 | |
510 | case TDESC_TYPE_INT128: | |
df4df182 | 511 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
512 | |
513 | case TDESC_TYPE_UINT8: | |
df4df182 | 514 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
515 | |
516 | case TDESC_TYPE_UINT16: | |
df4df182 | 517 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
518 | |
519 | case TDESC_TYPE_UINT32: | |
df4df182 | 520 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
521 | |
522 | case TDESC_TYPE_UINT64: | |
df4df182 | 523 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
524 | |
525 | case TDESC_TYPE_UINT128: | |
df4df182 | 526 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
527 | |
528 | case TDESC_TYPE_CODE_PTR: | |
529 | return builtin_type (gdbarch)->builtin_func_ptr; | |
530 | ||
531 | case TDESC_TYPE_DATA_PTR: | |
532 | return builtin_type (gdbarch)->builtin_data_ptr; | |
533 | ||
534 | case TDESC_TYPE_IEEE_SINGLE: | |
e9bb382b | 535 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 536 | floatformats_ieee_single); |
ad068eab UW |
537 | |
538 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 539 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 540 | floatformats_ieee_double); |
ad068eab UW |
541 | |
542 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 543 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 544 | floatformats_arm_ext); |
ad068eab UW |
545 | |
546 | /* Types defined by a target feature. */ | |
547 | case TDESC_TYPE_VECTOR: | |
548 | { | |
549 | struct type *type, *field_type; | |
550 | ||
551 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
552 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
553 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
554 | ||
555 | return type; | |
556 | } | |
557 | ||
558 | case TDESC_TYPE_UNION: | |
559 | { | |
560 | struct type *type, *field_type; | |
561 | struct tdesc_type_field *f; | |
562 | int ix; | |
563 | ||
e9bb382b | 564 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
565 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
566 | ||
567 | for (ix = 0; | |
568 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
569 | ix++) | |
570 | { | |
571 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
572 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
573 | ||
574 | /* If any of the children of this union are vectors, flag the | |
575 | union as a vector also. This allows e.g. a union of two | |
576 | vector types to show up automatically in "info vector". */ | |
577 | if (TYPE_VECTOR (field_type)) | |
578 | TYPE_VECTOR (type) = 1; | |
579 | } | |
580 | ||
581 | return type; | |
582 | } | |
583 | } | |
584 | ||
585 | internal_error (__FILE__, __LINE__, | |
586 | "Type \"%s\" has an unknown kind %d", | |
587 | tdesc_type->name, tdesc_type->kind); | |
588 | } | |
123dc839 DJ |
589 | \f |
590 | ||
591 | /* Support for registers from target descriptions. */ | |
592 | ||
593 | /* Construct the per-gdbarch data. */ | |
594 | ||
595 | static void * | |
596 | tdesc_data_init (struct obstack *obstack) | |
597 | { | |
598 | struct tdesc_arch_data *data; | |
599 | ||
600 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
601 | return data; | |
602 | } | |
603 | ||
604 | /* Similar, but for the temporary copy used during architecture | |
605 | initialization. */ | |
606 | ||
607 | struct tdesc_arch_data * | |
608 | tdesc_data_alloc (void) | |
609 | { | |
610 | return XZALLOC (struct tdesc_arch_data); | |
611 | } | |
612 | ||
613 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
614 | to be used (for instance if it was unsuitable for the | |
615 | architecture). */ | |
616 | ||
617 | void | |
618 | tdesc_data_cleanup (void *data_untyped) | |
619 | { | |
620 | struct tdesc_arch_data *data = data_untyped; | |
621 | ||
ad068eab | 622 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
623 | xfree (data); |
624 | } | |
625 | ||
626 | /* Search FEATURE for a register named NAME. */ | |
627 | ||
7cc46491 DJ |
628 | static struct tdesc_reg * |
629 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
630 | const char *name) | |
123dc839 DJ |
631 | { |
632 | int ixr; | |
633 | struct tdesc_reg *reg; | |
634 | ||
635 | for (ixr = 0; | |
636 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
637 | ixr++) | |
638 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 639 | return reg; |
123dc839 | 640 | |
7cc46491 DJ |
641 | return NULL; |
642 | } | |
643 | ||
644 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
645 | ||
646 | int | |
647 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
648 | struct tdesc_arch_data *data, | |
649 | int regno, const char *name) | |
650 | { | |
ad068eab | 651 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
652 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
653 | ||
654 | if (reg == NULL) | |
655 | return 0; | |
656 | ||
657 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
658 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
659 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
660 | ||
661 | arch_reg.reg = reg; | |
662 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 663 | return 1; |
123dc839 DJ |
664 | } |
665 | ||
58d6951d DJ |
666 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
667 | register number to it. */ | |
668 | ||
669 | int | |
670 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
671 | const char *name) | |
672 | { | |
673 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
674 | ||
675 | if (reg == NULL) | |
676 | return 0; | |
677 | ||
678 | return 1; | |
679 | } | |
680 | ||
7cc46491 DJ |
681 | /* Search FEATURE for a register whose name is in NAMES and assign |
682 | REGNO to it. */ | |
123dc839 DJ |
683 | |
684 | int | |
685 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
686 | struct tdesc_arch_data *data, | |
687 | int regno, const char *const names[]) | |
688 | { | |
689 | int i; | |
690 | ||
691 | for (i = 0; names[i] != NULL; i++) | |
692 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
693 | return 1; | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
7cc46491 DJ |
698 | /* Search FEATURE for a register named NAME, and return its size in |
699 | bits. The register must exist. */ | |
700 | ||
701 | int | |
702 | tdesc_register_size (const struct tdesc_feature *feature, | |
703 | const char *name) | |
704 | { | |
705 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
706 | ||
707 | gdb_assert (reg != NULL); | |
708 | return reg->bitsize; | |
709 | } | |
710 | ||
123dc839 DJ |
711 | /* Look up a register by its GDB internal register number. */ |
712 | ||
ad068eab UW |
713 | static struct tdesc_arch_reg * |
714 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 715 | { |
ad068eab | 716 | struct tdesc_arch_reg *reg; |
123dc839 DJ |
717 | struct tdesc_arch_data *data; |
718 | ||
719 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab UW |
720 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
721 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
722 | else |
723 | return NULL; | |
724 | } | |
725 | ||
ad068eab UW |
726 | static struct tdesc_reg * |
727 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
728 | { | |
729 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
730 | return reg? reg->reg : NULL; | |
731 | } | |
732 | ||
f8b73d13 DJ |
733 | /* Return the name of register REGNO, from the target description or |
734 | from an architecture-provided pseudo_register_name method. */ | |
735 | ||
736 | const char * | |
d93859e2 | 737 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 738 | { |
d93859e2 UW |
739 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
740 | int num_regs = gdbarch_num_regs (gdbarch); | |
741 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
742 | |
743 | if (reg != NULL) | |
744 | return reg->name; | |
745 | ||
746 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
747 | { | |
d93859e2 | 748 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); |
123dc839 | 749 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 750 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
751 | } |
752 | ||
753 | return ""; | |
754 | } | |
755 | ||
58d6951d | 756 | struct type * |
123dc839 DJ |
757 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
758 | { | |
ad068eab UW |
759 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
760 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
761 | int num_regs = gdbarch_num_regs (gdbarch); |
762 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
763 | ||
764 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
765 | { | |
766 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
767 | gdb_assert (data->pseudo_register_type != NULL); | |
768 | return data->pseudo_register_type (gdbarch, regno); | |
769 | } | |
770 | ||
771 | if (reg == NULL) | |
772 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 773 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 774 | |
ad068eab | 775 | if (arch_reg->type == NULL) |
123dc839 | 776 | { |
ad068eab UW |
777 | /* First check for a predefined or target defined type. */ |
778 | if (reg->tdesc_type) | |
779 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
780 | ||
781 | /* Next try size-sensitive type shortcuts. */ | |
782 | else if (strcmp (reg->type, "float") == 0) | |
783 | { | |
784 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
785 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
786 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
787 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
788 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
789 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
790 | else | |
791 | { | |
792 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
793 | reg->name, reg->bitsize); | |
794 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
795 | } | |
796 | } | |
797 | else if (strcmp (reg->type, "int") == 0) | |
798 | { | |
799 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
800 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
801 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
802 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
803 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
804 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
805 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
806 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
807 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
808 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
809 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
810 | /* A bit desperate by this point... */ | |
811 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; | |
812 | else | |
813 | { | |
814 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
815 | reg->name, reg->bitsize); | |
816 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
817 | } | |
818 | } | |
819 | ||
820 | if (arch_reg->type == NULL) | |
821 | internal_error (__FILE__, __LINE__, | |
822 | "Register \"%s\" has an unknown type \"%s\"", | |
823 | reg->name, reg->type); | |
123dc839 | 824 | } |
123dc839 | 825 | |
ad068eab | 826 | return arch_reg->type; |
123dc839 DJ |
827 | } |
828 | ||
829 | static int | |
830 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
831 | { | |
832 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
833 | ||
834 | if (reg != NULL) | |
835 | return reg->target_regnum; | |
836 | else | |
837 | return -1; | |
838 | } | |
839 | ||
840 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
841 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
842 | Unlike a gdbarch register_reggroup_p method, this function will |
843 | return -1 if it does not know; the caller should handle registers | |
844 | with no specified group. | |
123dc839 DJ |
845 | |
846 | Arbitrary strings (other than "general", "float", and "vector") | |
847 | from the description are not used; they cause the register to be | |
848 | displayed in "info all-registers" but excluded from "info | |
849 | registers" et al. The names of containing features are also not | |
850 | used. This might be extended to display registers in some more | |
851 | useful groupings. | |
852 | ||
853 | The save-restore flag is also implemented here. */ | |
854 | ||
f8b73d13 DJ |
855 | int |
856 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
857 | struct reggroup *reggroup) | |
123dc839 | 858 | { |
123dc839 DJ |
859 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
860 | ||
123dc839 DJ |
861 | if (reg != NULL && reg->group != NULL) |
862 | { | |
863 | int general_p = 0, float_p = 0, vector_p = 0; | |
864 | ||
865 | if (strcmp (reg->group, "general") == 0) | |
866 | general_p = 1; | |
867 | else if (strcmp (reg->group, "float") == 0) | |
868 | float_p = 1; | |
869 | else if (strcmp (reg->group, "vector") == 0) | |
870 | vector_p = 1; | |
871 | ||
872 | if (reggroup == float_reggroup) | |
873 | return float_p; | |
874 | ||
875 | if (reggroup == vector_reggroup) | |
876 | return vector_p; | |
877 | ||
878 | if (reggroup == general_reggroup) | |
879 | return general_p; | |
880 | } | |
881 | ||
882 | if (reg != NULL | |
883 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
884 | return reg->save_restore; | |
885 | ||
f8b73d13 DJ |
886 | return -1; |
887 | } | |
888 | ||
889 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
890 | group specified go to the default reggroup function and are handled | |
891 | by type. */ | |
892 | ||
893 | static int | |
894 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
895 | struct reggroup *reggroup) | |
896 | { | |
897 | int num_regs = gdbarch_num_regs (gdbarch); | |
898 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
899 | int ret; | |
900 | ||
901 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
902 | { | |
903 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
58d6951d DJ |
904 | if (data->pseudo_register_reggroup_p != NULL) |
905 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
906 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
907 | } |
908 | ||
909 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
910 | if (ret != -1) | |
911 | return ret; | |
912 | ||
123dc839 DJ |
913 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
914 | } | |
915 | ||
916 | /* Record architecture-specific functions to call for pseudo-register | |
917 | support. */ | |
918 | ||
919 | void | |
920 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
921 | gdbarch_register_name_ftype *pseudo_name) | |
922 | { | |
923 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
924 | ||
925 | data->pseudo_register_name = pseudo_name; | |
926 | } | |
927 | ||
928 | void | |
929 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
930 | gdbarch_register_type_ftype *pseudo_type) | |
931 | { | |
932 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
933 | ||
934 | data->pseudo_register_type = pseudo_type; | |
935 | } | |
936 | ||
937 | void | |
938 | set_tdesc_pseudo_register_reggroup_p | |
939 | (struct gdbarch *gdbarch, | |
940 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
941 | { | |
942 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
943 | ||
944 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
945 | } | |
946 | ||
947 | /* Update GDBARCH to use the target description for registers. */ | |
948 | ||
949 | void | |
950 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 951 | const struct target_desc *target_desc, |
123dc839 DJ |
952 | struct tdesc_arch_data *early_data) |
953 | { | |
954 | int num_regs = gdbarch_num_regs (gdbarch); | |
955 | int i, ixf, ixr; | |
123dc839 DJ |
956 | struct tdesc_feature *feature; |
957 | struct tdesc_reg *reg; | |
958 | struct tdesc_arch_data *data; | |
ad068eab | 959 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
960 | htab_t reg_hash; |
961 | ||
123dc839 DJ |
962 | /* We can't use the description for registers if it doesn't describe |
963 | any. This function should only be called after validating | |
964 | registers, so the caller should know that registers are | |
965 | included. */ | |
966 | gdb_assert (tdesc_has_registers (target_desc)); | |
967 | ||
968 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab | 969 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
970 | xfree (early_data); |
971 | ||
972 | /* Build up a set of all registers, so that we can assign register | |
973 | numbers where needed. The hash table expands as necessary, so | |
974 | the initial size is arbitrary. */ | |
975 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
976 | for (ixf = 0; | |
977 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
978 | ixf++) | |
979 | for (ixr = 0; | |
980 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
981 | ixr++) | |
982 | { | |
983 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
984 | ||
985 | *slot = reg; | |
986 | } | |
987 | ||
988 | /* Remove any registers which were assigned numbers by the | |
989 | architecture. */ | |
ad068eab UW |
990 | for (ixr = 0; |
991 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
992 | ixr++) | |
993 | if (arch_reg->reg) | |
994 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
995 | |
996 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 997 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
998 | Iterate over the features, not the hash table, so that the order |
999 | matches that in the target description. */ | |
1000 | ||
ad068eab UW |
1001 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1002 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1003 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1004 | for (ixf = 0; |
1005 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1006 | ixf++) | |
1007 | for (ixr = 0; | |
1008 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1009 | ixr++) | |
1010 | if (htab_find (reg_hash, reg) != NULL) | |
1011 | { | |
ad068eab UW |
1012 | new_arch_reg.reg = reg; |
1013 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1014 | num_regs++; |
1015 | } | |
1016 | ||
1017 | htab_delete (reg_hash); | |
1018 | ||
1019 | /* Update the architecture. */ | |
1020 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1021 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1022 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1023 | set_gdbarch_remote_register_number (gdbarch, | |
1024 | tdesc_remote_register_number); | |
1025 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1026 | } | |
1027 | \f | |
1028 | ||
424163ea DJ |
1029 | /* Methods for constructing a target description. */ |
1030 | ||
123dc839 DJ |
1031 | static void |
1032 | tdesc_free_reg (struct tdesc_reg *reg) | |
1033 | { | |
1034 | xfree (reg->name); | |
1035 | xfree (reg->type); | |
1036 | xfree (reg->group); | |
1037 | xfree (reg); | |
1038 | } | |
1039 | ||
1040 | void | |
1041 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1042 | int regnum, int save_restore, const char *group, | |
1043 | int bitsize, const char *type) | |
1044 | { | |
1045 | struct tdesc_reg *reg = XZALLOC (struct tdesc_reg); | |
1046 | ||
1047 | reg->name = xstrdup (name); | |
1048 | reg->target_regnum = regnum; | |
1049 | reg->save_restore = save_restore; | |
1050 | reg->group = group ? xstrdup (group) : NULL; | |
1051 | reg->bitsize = bitsize; | |
c8c12293 | 1052 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
123dc839 DJ |
1053 | |
1054 | /* If the register's type is target-defined, look it up now. We may not | |
1055 | have easy access to the containing feature when we want it later. */ | |
ad068eab | 1056 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
123dc839 DJ |
1057 | |
1058 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1059 | } | |
1060 | ||
ad068eab UW |
1061 | static void |
1062 | tdesc_free_type (struct tdesc_type *type) | |
1063 | { | |
1064 | ||
1065 | switch (type->kind) | |
1066 | { | |
1067 | case TDESC_TYPE_UNION: | |
1068 | { | |
1069 | struct tdesc_type_field *f; | |
1070 | int ix; | |
1071 | ||
1072 | for (ix = 0; | |
1073 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); | |
1074 | ix++) | |
1075 | xfree (f->name); | |
1076 | ||
1077 | VEC_free (tdesc_type_field, type->u.u.fields); | |
1078 | } | |
1079 | break; | |
1080 | ||
1081 | default: | |
1082 | break; | |
1083 | } | |
1084 | ||
1085 | xfree (type->name); | |
1086 | xfree (type); | |
1087 | } | |
1088 | ||
1089 | struct tdesc_type * | |
1090 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1091 | struct tdesc_type *field_type, int count) | |
1092 | { | |
1093 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1094 | ||
1095 | type->name = xstrdup (name); | |
1096 | type->kind = TDESC_TYPE_VECTOR; | |
1097 | type->u.v.type = field_type; | |
1098 | type->u.v.count = count; | |
1099 | ||
1100 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1101 | return type; | |
1102 | } | |
1103 | ||
1104 | struct tdesc_type * | |
1105 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1106 | { | |
1107 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1108 | ||
1109 | type->name = xstrdup (name); | |
1110 | type->kind = TDESC_TYPE_UNION; | |
1111 | ||
1112 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1113 | return type; | |
1114 | } | |
1115 | ||
1116 | void | |
1117 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1118 | struct tdesc_type *field_type) | |
1119 | { | |
1120 | struct tdesc_type_field f = { 0 }; | |
1121 | ||
1122 | gdb_assert (type->kind == TDESC_TYPE_UNION); | |
1123 | ||
1124 | f.name = xstrdup (field_name); | |
1125 | f.type = field_type; | |
1126 | ||
1127 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1128 | } | |
1129 | ||
123dc839 DJ |
1130 | static void |
1131 | tdesc_free_feature (struct tdesc_feature *feature) | |
1132 | { | |
1133 | struct tdesc_reg *reg; | |
ad068eab | 1134 | struct tdesc_type *type; |
123dc839 DJ |
1135 | int ix; |
1136 | ||
1137 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) | |
1138 | tdesc_free_reg (reg); | |
1139 | VEC_free (tdesc_reg_p, feature->registers); | |
1140 | ||
ad068eab UW |
1141 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
1142 | tdesc_free_type (type); | |
1143 | VEC_free (tdesc_type_p, feature->types); | |
123dc839 DJ |
1144 | |
1145 | xfree (feature->name); | |
1146 | xfree (feature); | |
1147 | } | |
1148 | ||
1149 | struct tdesc_feature * | |
1150 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1151 | { | |
1152 | struct tdesc_feature *new_feature = XZALLOC (struct tdesc_feature); | |
1153 | ||
1154 | new_feature->name = xstrdup (name); | |
1155 | ||
1156 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1157 | return new_feature; | |
1158 | } | |
1159 | ||
424163ea DJ |
1160 | struct target_desc * |
1161 | allocate_target_description (void) | |
1162 | { | |
1163 | return XZALLOC (struct target_desc); | |
1164 | } | |
29709017 | 1165 | |
23181151 DJ |
1166 | static void |
1167 | free_target_description (void *arg) | |
1168 | { | |
1169 | struct target_desc *target_desc = arg; | |
123dc839 | 1170 | struct tdesc_feature *feature; |
23181151 DJ |
1171 | struct property *prop; |
1172 | int ix; | |
1173 | ||
123dc839 DJ |
1174 | for (ix = 0; |
1175 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
1176 | ix++) | |
1177 | tdesc_free_feature (feature); | |
1178 | VEC_free (tdesc_feature_p, target_desc->features); | |
1179 | ||
23181151 DJ |
1180 | for (ix = 0; |
1181 | VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1182 | ix++) | |
1183 | { | |
1184 | xfree (prop->key); | |
1185 | xfree (prop->value); | |
1186 | } | |
1187 | VEC_free (property_s, target_desc->properties); | |
1188 | ||
e35359c5 UW |
1189 | VEC_free (arch_p, target_desc->compatible); |
1190 | ||
23181151 DJ |
1191 | xfree (target_desc); |
1192 | } | |
1193 | ||
1194 | struct cleanup * | |
1195 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1196 | { | |
1197 | return make_cleanup (free_target_description, target_desc); | |
1198 | } | |
1199 | ||
e35359c5 UW |
1200 | void |
1201 | tdesc_add_compatible (struct target_desc *target_desc, | |
1202 | const struct bfd_arch_info *compatible) | |
1203 | { | |
1204 | const struct bfd_arch_info *compat; | |
1205 | int ix; | |
1206 | ||
1207 | /* If this instance of GDB is compiled without BFD support for the | |
1208 | compatible architecture, simply ignore it -- we would not be able | |
1209 | to handle it anyway. */ | |
1210 | if (compatible == NULL) | |
1211 | return; | |
1212 | ||
1213 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1214 | ix++) | |
1215 | if (compat == compatible) | |
1216 | internal_error (__FILE__, __LINE__, | |
1217 | _("Attempted to add duplicate " | |
1218 | "compatible architecture \"%s\""), | |
1219 | compatible->printable_name); | |
1220 | ||
1221 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1222 | } | |
1223 | ||
29709017 DJ |
1224 | void |
1225 | set_tdesc_property (struct target_desc *target_desc, | |
1226 | const char *key, const char *value) | |
1227 | { | |
1228 | struct property *prop, new_prop; | |
1229 | int ix; | |
1230 | ||
1231 | gdb_assert (key != NULL && value != NULL); | |
1232 | ||
1233 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1234 | ix++) | |
1235 | if (strcmp (prop->key, key) == 0) | |
1236 | internal_error (__FILE__, __LINE__, | |
1237 | _("Attempted to add duplicate property \"%s\""), key); | |
1238 | ||
23181151 DJ |
1239 | new_prop.key = xstrdup (key); |
1240 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1241 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1242 | } | |
23181151 DJ |
1243 | |
1244 | void | |
1245 | set_tdesc_architecture (struct target_desc *target_desc, | |
1246 | const struct bfd_arch_info *arch) | |
1247 | { | |
1248 | target_desc->arch = arch; | |
1249 | } | |
08d16641 PA |
1250 | |
1251 | void | |
1252 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1253 | { | |
1254 | target_desc->osabi = osabi; | |
1255 | } | |
23181151 DJ |
1256 | \f |
1257 | ||
1258 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1259 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1260 | ||
1261 | /* Helper functions for the CLI commands. */ | |
1262 | ||
1263 | static void | |
1264 | set_tdesc_cmd (char *args, int from_tty) | |
1265 | { | |
1266 | help_list (tdesc_set_cmdlist, "set tdesc ", -1, gdb_stdout); | |
1267 | } | |
1268 | ||
1269 | static void | |
1270 | show_tdesc_cmd (char *args, int from_tty) | |
1271 | { | |
1272 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1273 | } | |
1274 | ||
1275 | static void | |
1276 | unset_tdesc_cmd (char *args, int from_tty) | |
1277 | { | |
1278 | help_list (tdesc_unset_cmdlist, "unset tdesc ", -1, gdb_stdout); | |
1279 | } | |
1280 | ||
1281 | static void | |
1282 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1283 | struct cmd_list_element *c) | |
1284 | { | |
1285 | target_clear_description (); | |
1286 | target_find_description (); | |
1287 | } | |
1288 | ||
1289 | static void | |
1290 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1291 | struct cmd_list_element *c, | |
1292 | const char *value) | |
1293 | { | |
1294 | if (value != NULL && *value != '\0') | |
1295 | printf_filtered (_("\ | |
1296 | The target description will be read from \"%s\".\n"), | |
1297 | value); | |
1298 | else | |
1299 | printf_filtered (_("\ | |
1300 | The target description will be read from the target.\n")); | |
1301 | } | |
1302 | ||
1303 | static void | |
1304 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1305 | { | |
1306 | xfree (target_description_filename); | |
1307 | target_description_filename = NULL; | |
1308 | target_clear_description (); | |
1309 | target_find_description (); | |
1310 | } | |
1311 | ||
81adfced DJ |
1312 | static void |
1313 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1314 | { | |
1315 | const struct target_desc *tdesc; | |
e35359c5 | 1316 | const struct bfd_arch_info *compatible; |
81adfced DJ |
1317 | const char *filename, *inp; |
1318 | char *function, *outp; | |
1319 | struct property *prop; | |
1320 | struct tdesc_feature *feature; | |
1321 | struct tdesc_reg *reg; | |
ad068eab UW |
1322 | struct tdesc_type *type; |
1323 | struct tdesc_type_field *f; | |
81adfced DJ |
1324 | int ix, ix2, ix3; |
1325 | ||
1326 | /* Use the global target-supplied description, not the current | |
1327 | architecture's. This lets a GDB for one architecture generate C | |
1328 | for another architecture's description, even though the gdbarch | |
1329 | initialization code will reject the new description. */ | |
1330 | tdesc = current_target_desc; | |
1331 | if (tdesc == NULL) | |
1332 | error (_("There is no target description to print.")); | |
1333 | ||
1334 | if (target_description_filename == NULL) | |
1335 | error (_("The current target description did not come from an XML file.")); | |
1336 | ||
1337 | filename = lbasename (target_description_filename); | |
db3b9a10 | 1338 | function = alloca (strlen (filename) + 1); |
81adfced DJ |
1339 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1340 | if (*inp == '.') | |
1341 | break; | |
1342 | else if (*inp == '-') | |
1343 | *outp++ = '_'; | |
1344 | else | |
1345 | *outp++ = *inp; | |
1346 | *outp = '\0'; | |
1347 | ||
1348 | /* Standard boilerplate. */ | |
1349 | printf_unfiltered ("/* THIS FILE IS GENERATED. Original: %s */\n\n", | |
1350 | filename); | |
1351 | printf_unfiltered ("#include \"defs.h\"\n"); | |
c3f08eb7 | 1352 | printf_unfiltered ("#include \"osabi.h\"\n"); |
81adfced DJ |
1353 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1354 | printf_unfiltered ("\n"); | |
1355 | ||
1356 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1357 | printf_unfiltered ("static void\n"); | |
1358 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1359 | printf_unfiltered ("{\n"); | |
1360 | printf_unfiltered | |
1361 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1362 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
ad068eab | 1363 | printf_unfiltered (" struct tdesc_type *field_type, *type;\n"); |
81adfced DJ |
1364 | printf_unfiltered ("\n"); |
1365 | ||
1366 | if (tdesc_architecture (tdesc) != NULL) | |
1367 | { | |
1368 | printf_unfiltered | |
1369 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1370 | tdesc_architecture (tdesc)->printable_name); | |
1371 | printf_unfiltered ("\n"); | |
1372 | } | |
1373 | ||
c3f08eb7 L |
1374 | if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN |
1375 | && tdesc_osabi (tdesc) < GDB_OSABI_INVALID) | |
1376 | { | |
1377 | printf_unfiltered | |
1378 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1379 | gdbarch_osabi_name (tdesc_osabi (tdesc))); | |
1380 | printf_unfiltered ("\n"); | |
1381 | } | |
1382 | ||
e35359c5 UW |
1383 | for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible); |
1384 | ix++) | |
1385 | { | |
1386 | printf_unfiltered | |
1387 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1388 | compatible->printable_name); | |
1389 | } | |
1390 | if (ix) | |
1391 | printf_unfiltered ("\n"); | |
1392 | ||
81adfced DJ |
1393 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); |
1394 | ix++) | |
1395 | { | |
1396 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1397 | prop->key, prop->value); | |
1398 | } | |
1399 | ||
1400 | for (ix = 0; | |
1401 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1402 | ix++) | |
1403 | { | |
1404 | printf_unfiltered (" feature = tdesc_create_feature (result, \"%s\");\n", | |
1405 | feature->name); | |
1406 | ||
1407 | for (ix2 = 0; | |
ad068eab | 1408 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1409 | ix2++) |
1410 | { | |
ad068eab | 1411 | switch (type->kind) |
81adfced | 1412 | { |
ad068eab | 1413 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1414 | printf_unfiltered |
1415 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1416 | type->u.v.type->name); |
81adfced | 1417 | printf_unfiltered |
ad068eab UW |
1418 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1419 | type->name, type->u.v.count); | |
81adfced | 1420 | break; |
ad068eab | 1421 | case TDESC_TYPE_UNION: |
81adfced | 1422 | printf_unfiltered |
ad068eab UW |
1423 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1424 | type->name); | |
1425 | for (ix3 = 0; | |
1426 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1427 | ix3++) | |
81adfced DJ |
1428 | { |
1429 | printf_unfiltered | |
1430 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1431 | f->type->name); |
81adfced | 1432 | printf_unfiltered |
ad068eab UW |
1433 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1434 | f->name); | |
81adfced | 1435 | } |
81adfced DJ |
1436 | break; |
1437 | default: | |
ad068eab | 1438 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1439 | } |
81adfced DJ |
1440 | printf_unfiltered ("\n"); |
1441 | } | |
1442 | ||
1443 | for (ix2 = 0; | |
1444 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1445 | ix2++) | |
1446 | { | |
1447 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1448 | reg->name, reg->target_regnum, reg->save_restore); | |
1449 | if (reg->group) | |
1450 | printf_unfiltered ("\"%s\", ", reg->group); | |
1451 | else | |
1452 | printf_unfiltered ("NULL, "); | |
1453 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1454 | } | |
1455 | ||
1456 | printf_unfiltered ("\n"); | |
1457 | } | |
1458 | ||
1459 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
1460 | printf_unfiltered ("}\n"); | |
1461 | } | |
1462 | ||
2c0b251b PA |
1463 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1464 | extern initialize_file_ftype _initialize_target_descriptions; | |
1465 | ||
23181151 DJ |
1466 | void |
1467 | _initialize_target_descriptions (void) | |
1468 | { | |
123dc839 DJ |
1469 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1470 | ||
23181151 DJ |
1471 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1472 | Set target description specific variables."), | |
1473 | &tdesc_set_cmdlist, "set tdesc ", | |
1474 | 0 /* allow-unknown */, &setlist); | |
1475 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1476 | Show target description specific variables."), | |
1477 | &tdesc_show_cmdlist, "show tdesc ", | |
1478 | 0 /* allow-unknown */, &showlist); | |
1479 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1480 | Unset target description specific variables."), | |
1481 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1482 | 0 /* allow-unknown */, &unsetlist); | |
1483 | ||
1484 | add_setshow_filename_cmd ("filename", class_obscure, | |
1485 | &target_description_filename, | |
1486 | _("\ | |
1487 | Set the file to read for an XML target description"), _("\ | |
1488 | Show the file to read for an XML target description"), _("\ | |
1489 | When set, GDB will read the target description from a local\n\ | |
1490 | file instead of querying the remote target."), | |
1491 | set_tdesc_filename_cmd, | |
1492 | show_tdesc_filename_cmd, | |
1493 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1494 | ||
1495 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1496 | Unset the file to read for an XML target description. When unset,\n\ | |
1497 | GDB will read the description from the target."), | |
1498 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1499 | |
1500 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1501 | Print the current target description as a C source file."), | |
1502 | &maintenanceprintlist); | |
23181151 | 1503 | } |