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