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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
61baf725 | 3 | Copyright (C) 2006-2017 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea | 33 | |
123dc839 DJ |
34 | #include "gdb_obstack.h" |
35 | #include "hashtab.h" | |
6ecd4729 | 36 | #include "inferior.h" |
424163ea DJ |
37 | |
38 | /* Types. */ | |
39 | ||
29709017 DJ |
40 | typedef struct property |
41 | { | |
23181151 DJ |
42 | char *key; |
43 | char *value; | |
29709017 DJ |
44 | } property_s; |
45 | DEF_VEC_O(property_s); | |
46 | ||
123dc839 DJ |
47 | /* An individual register from a target description. */ |
48 | ||
49 | typedef struct tdesc_reg | |
50 | { | |
51 | /* The name of this register. In standard features, it may be | |
52 | recognized by the architecture support code, or it may be purely | |
53 | for the user. */ | |
54 | char *name; | |
55 | ||
56 | /* The register number used by this target to refer to this | |
57 | register. This is used for remote p/P packets and to determine | |
58 | the ordering of registers in the remote g/G packets. */ | |
59 | long target_regnum; | |
60 | ||
61 | /* If this flag is set, GDB should save and restore this register | |
62 | around calls to an inferior function. */ | |
63 | int save_restore; | |
64 | ||
65 | /* The name of the register group containing this register, or NULL | |
66 | if the group should be automatically determined from the | |
67 | register's type. If this is "general", "float", or "vector", the | |
68 | corresponding "info" command should display this register's | |
69 | value. It can be an arbitrary string, but should be limited to | |
70 | alphanumeric characters and internal hyphens. Currently other | |
71 | strings are ignored (treated as NULL). */ | |
72 | char *group; | |
73 | ||
74 | /* The size of the register, in bits. */ | |
75 | int bitsize; | |
76 | ||
77 | /* The type of the register. This string corresponds to either | |
78 | a named type from the target description or a predefined | |
79 | type from GDB. */ | |
80 | char *type; | |
81 | ||
82 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 83 | struct tdesc_type *tdesc_type; |
123dc839 DJ |
84 | } *tdesc_reg_p; |
85 | DEF_VEC_P(tdesc_reg_p); | |
86 | ||
87 | /* A named type from a target description. */ | |
ad068eab UW |
88 | |
89 | typedef struct tdesc_type_field | |
90 | { | |
91 | char *name; | |
92 | struct tdesc_type *type; | |
81516450 DE |
93 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
94 | not -1 (bitfield). For enum values, start is the value (which could be | |
95 | -1), end is -1. */ | |
f5dff777 | 96 | int start, end; |
ad068eab UW |
97 | } tdesc_type_field; |
98 | DEF_VEC_O(tdesc_type_field); | |
99 | ||
52059ffd TT |
100 | enum tdesc_type_kind |
101 | { | |
102 | /* Predefined types. */ | |
81516450 | 103 | TDESC_TYPE_BOOL, |
52059ffd TT |
104 | TDESC_TYPE_INT8, |
105 | TDESC_TYPE_INT16, | |
106 | TDESC_TYPE_INT32, | |
107 | TDESC_TYPE_INT64, | |
108 | TDESC_TYPE_INT128, | |
109 | TDESC_TYPE_UINT8, | |
110 | TDESC_TYPE_UINT16, | |
111 | TDESC_TYPE_UINT32, | |
112 | TDESC_TYPE_UINT64, | |
113 | TDESC_TYPE_UINT128, | |
114 | TDESC_TYPE_CODE_PTR, | |
115 | TDESC_TYPE_DATA_PTR, | |
116 | TDESC_TYPE_IEEE_SINGLE, | |
117 | TDESC_TYPE_IEEE_DOUBLE, | |
118 | TDESC_TYPE_ARM_FPA_EXT, | |
119 | TDESC_TYPE_I387_EXT, | |
120 | ||
121 | /* Types defined by a target feature. */ | |
122 | TDESC_TYPE_VECTOR, | |
123 | TDESC_TYPE_STRUCT, | |
124 | TDESC_TYPE_UNION, | |
81516450 DE |
125 | TDESC_TYPE_FLAGS, |
126 | TDESC_TYPE_ENUM | |
52059ffd TT |
127 | }; |
128 | ||
ad068eab UW |
129 | typedef struct tdesc_type |
130 | { | |
a121b7c1 PA |
131 | /* The name of this type. If this type is a built-in type, this is |
132 | a pointer to a constant string. Otherwise, it's a | |
133 | malloc-allocated string (and thus must be freed). */ | |
134 | const char *name; | |
ad068eab UW |
135 | |
136 | /* Identify the kind of this type. */ | |
52059ffd | 137 | enum tdesc_type_kind kind; |
ad068eab UW |
138 | |
139 | /* Kind-specific data. */ | |
140 | union | |
141 | { | |
142 | /* Vector type. */ | |
143 | struct | |
144 | { | |
145 | struct tdesc_type *type; | |
146 | int count; | |
147 | } v; | |
148 | ||
81516450 | 149 | /* Struct, union, flags, or enum type. */ |
ad068eab UW |
150 | struct |
151 | { | |
152 | VEC(tdesc_type_field) *fields; | |
54157a25 | 153 | int size; |
ad068eab UW |
154 | } u; |
155 | } u; | |
156 | } *tdesc_type_p; | |
157 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
158 | |
159 | /* A feature from a target description. Each feature is a collection | |
160 | of other elements, e.g. registers and types. */ | |
161 | ||
162 | typedef struct tdesc_feature | |
163 | { | |
164 | /* The name of this feature. It may be recognized by the architecture | |
165 | support code. */ | |
166 | char *name; | |
167 | ||
168 | /* The registers associated with this feature. */ | |
169 | VEC(tdesc_reg_p) *registers; | |
170 | ||
171 | /* The types associated with this feature. */ | |
ad068eab | 172 | VEC(tdesc_type_p) *types; |
123dc839 DJ |
173 | } *tdesc_feature_p; |
174 | DEF_VEC_P(tdesc_feature_p); | |
175 | ||
e35359c5 UW |
176 | /* A compatible architecture from a target description. */ |
177 | typedef const struct bfd_arch_info *arch_p; | |
178 | DEF_VEC_P(arch_p); | |
179 | ||
123dc839 DJ |
180 | /* A target description. */ |
181 | ||
424163ea DJ |
182 | struct target_desc |
183 | { | |
23181151 DJ |
184 | /* The architecture reported by the target, if any. */ |
185 | const struct bfd_arch_info *arch; | |
186 | ||
08d16641 PA |
187 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
188 | otherwise. */ | |
189 | enum gdb_osabi osabi; | |
190 | ||
e35359c5 UW |
191 | /* The list of compatible architectures reported by the target. */ |
192 | VEC(arch_p) *compatible; | |
193 | ||
29709017 DJ |
194 | /* Any architecture-specific properties specified by the target. */ |
195 | VEC(property_s) *properties; | |
123dc839 DJ |
196 | |
197 | /* The features associated with this target. */ | |
198 | VEC(tdesc_feature_p) *features; | |
199 | }; | |
200 | ||
201 | /* Per-architecture data associated with a target description. The | |
202 | target description may be shared by multiple architectures, but | |
203 | this data is private to one gdbarch. */ | |
204 | ||
ad068eab UW |
205 | typedef struct tdesc_arch_reg |
206 | { | |
207 | struct tdesc_reg *reg; | |
208 | struct type *type; | |
209 | } tdesc_arch_reg; | |
210 | DEF_VEC_O(tdesc_arch_reg); | |
211 | ||
123dc839 DJ |
212 | struct tdesc_arch_data |
213 | { | |
ad068eab | 214 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
215 | During initialization of the gdbarch this list is used to store |
216 | registers which the architecture assigns a fixed register number. | |
217 | Registers which are NULL in this array, or off the end, are | |
218 | treated as zero-sized and nameless (i.e. placeholders in the | |
219 | numbering). */ | |
ad068eab | 220 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
221 | |
222 | /* Functions which report the register name, type, and reggroups for | |
223 | pseudo-registers. */ | |
224 | gdbarch_register_name_ftype *pseudo_register_name; | |
225 | gdbarch_register_type_ftype *pseudo_register_type; | |
226 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
227 | }; |
228 | ||
6ecd4729 PA |
229 | /* Info about an inferior's target description. There's one of these |
230 | for each inferior. */ | |
424163ea | 231 | |
6ecd4729 PA |
232 | struct target_desc_info |
233 | { | |
234 | /* A flag indicating that a description has already been fetched | |
235 | from the target, so it should not be queried again. */ | |
236 | ||
237 | int fetched; | |
424163ea | 238 | |
6ecd4729 PA |
239 | /* The description fetched from the target, or NULL if the target |
240 | did not supply any description. Only valid when | |
241 | target_desc_fetched is set. Only the description initialization | |
242 | code should access this; normally, the description should be | |
243 | accessed through the gdbarch object. */ | |
424163ea | 244 | |
6ecd4729 | 245 | const struct target_desc *tdesc; |
424163ea | 246 | |
6ecd4729 PA |
247 | /* The filename to read a target description from, as set by "set |
248 | tdesc filename ..." */ | |
424163ea | 249 | |
6ecd4729 PA |
250 | char *filename; |
251 | }; | |
23181151 | 252 | |
6ecd4729 PA |
253 | /* Get the inferior INF's target description info, allocating one on |
254 | the stop if necessary. */ | |
23181151 | 255 | |
6ecd4729 PA |
256 | static struct target_desc_info * |
257 | get_tdesc_info (struct inferior *inf) | |
258 | { | |
259 | if (inf->tdesc_info == NULL) | |
260 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
261 | return inf->tdesc_info; | |
262 | } | |
23181151 | 263 | |
123dc839 DJ |
264 | /* A handle for architecture-specific data associated with the |
265 | target description (see struct tdesc_arch_data). */ | |
266 | ||
267 | static struct gdbarch_data *tdesc_data; | |
268 | ||
6ecd4729 PA |
269 | /* See target-descriptions.h. */ |
270 | ||
271 | int | |
272 | target_desc_info_from_user_p (struct target_desc_info *info) | |
273 | { | |
274 | return info != NULL && info->filename != NULL; | |
275 | } | |
276 | ||
277 | /* See target-descriptions.h. */ | |
278 | ||
279 | void | |
280 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
281 | { | |
282 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
283 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
284 | ||
285 | dest->fetched = src->fetched; | |
286 | dest->tdesc = src->tdesc; | |
287 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
288 | } | |
289 | ||
290 | /* See target-descriptions.h. */ | |
291 | ||
292 | void | |
293 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
294 | { | |
295 | if (tdesc_info != NULL) | |
296 | { | |
297 | xfree (tdesc_info->filename); | |
298 | xfree (tdesc_info); | |
299 | } | |
300 | } | |
301 | ||
302 | /* Convenience helper macros. */ | |
303 | ||
304 | #define target_desc_fetched \ | |
305 | get_tdesc_info (current_inferior ())->fetched | |
306 | #define current_target_desc \ | |
307 | get_tdesc_info (current_inferior ())->tdesc | |
308 | #define target_description_filename \ | |
309 | get_tdesc_info (current_inferior ())->filename | |
310 | ||
311 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
312 | ||
313 | static char *tdesc_filename_cmd_string; | |
314 | ||
424163ea DJ |
315 | /* Fetch the current target's description, and switch the current |
316 | architecture to one which incorporates that description. */ | |
317 | ||
318 | void | |
319 | target_find_description (void) | |
320 | { | |
321 | /* If we've already fetched a description from the target, don't do | |
322 | it again. This allows a target to fetch the description early, | |
323 | during its to_open or to_create_inferior, if it needs extra | |
324 | information about the target to initialize. */ | |
325 | if (target_desc_fetched) | |
326 | return; | |
327 | ||
328 | /* The current architecture should not have any target description | |
329 | specified. It should have been cleared, e.g. when we | |
330 | disconnected from the previous target. */ | |
f5656ead | 331 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 332 | |
23181151 DJ |
333 | /* First try to fetch an XML description from the user-specified |
334 | file. */ | |
335 | current_target_desc = NULL; | |
336 | if (target_description_filename != NULL | |
337 | && *target_description_filename != '\0') | |
338 | current_target_desc | |
339 | = file_read_description_xml (target_description_filename); | |
340 | ||
341 | /* Next try to read the description from the current target using | |
342 | target objects. */ | |
343 | if (current_target_desc == NULL) | |
344 | current_target_desc = target_read_description_xml (¤t_target); | |
345 | ||
346 | /* If that failed try a target-specific hook. */ | |
347 | if (current_target_desc == NULL) | |
348 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
349 | |
350 | /* If a non-NULL description was returned, then update the current | |
351 | architecture. */ | |
352 | if (current_target_desc) | |
353 | { | |
354 | struct gdbarch_info info; | |
355 | ||
356 | gdbarch_info_init (&info); | |
357 | info.target_desc = current_target_desc; | |
358 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
359 | warning (_("Architecture rejected target-supplied description")); |
360 | else | |
361 | { | |
362 | struct tdesc_arch_data *data; | |
363 | ||
19ba03f4 SM |
364 | data = ((struct tdesc_arch_data *) |
365 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 366 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 367 | && data->arch_regs == NULL) |
123dc839 DJ |
368 | warning (_("Target-supplied registers are not supported " |
369 | "by the current architecture")); | |
370 | } | |
424163ea DJ |
371 | } |
372 | ||
373 | /* Now that we know this description is usable, record that we | |
374 | fetched it. */ | |
375 | target_desc_fetched = 1; | |
376 | } | |
377 | ||
378 | /* Discard any description fetched from the current target, and switch | |
379 | the current architecture to one with no target description. */ | |
380 | ||
381 | void | |
382 | target_clear_description (void) | |
383 | { | |
384 | struct gdbarch_info info; | |
385 | ||
386 | if (!target_desc_fetched) | |
387 | return; | |
388 | ||
389 | target_desc_fetched = 0; | |
390 | current_target_desc = NULL; | |
391 | ||
392 | gdbarch_info_init (&info); | |
393 | if (!gdbarch_update_p (info)) | |
394 | internal_error (__FILE__, __LINE__, | |
395 | _("Could not remove target-supplied description")); | |
396 | } | |
397 | ||
398 | /* Return the global current target description. This should only be | |
399 | used by gdbarch initialization code; most access should be through | |
400 | an existing gdbarch. */ | |
401 | ||
402 | const struct target_desc * | |
403 | target_current_description (void) | |
404 | { | |
405 | if (target_desc_fetched) | |
406 | return current_target_desc; | |
407 | ||
408 | return NULL; | |
409 | } | |
e35359c5 UW |
410 | |
411 | /* Return non-zero if this target description is compatible | |
412 | with the given BFD architecture. */ | |
413 | ||
414 | int | |
415 | tdesc_compatible_p (const struct target_desc *target_desc, | |
416 | const struct bfd_arch_info *arch) | |
417 | { | |
418 | const struct bfd_arch_info *compat; | |
419 | int ix; | |
420 | ||
421 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
422 | ix++) | |
423 | { | |
424 | if (compat == arch | |
425 | || arch->compatible (arch, compat) | |
426 | || compat->compatible (compat, arch)) | |
427 | return 1; | |
428 | } | |
429 | ||
430 | return 0; | |
431 | } | |
23181151 DJ |
432 | \f |
433 | ||
123dc839 | 434 | /* Direct accessors for target descriptions. */ |
424163ea | 435 | |
29709017 DJ |
436 | /* Return the string value of a property named KEY, or NULL if the |
437 | property was not specified. */ | |
438 | ||
439 | const char * | |
440 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
441 | { | |
442 | struct property *prop; | |
443 | int ix; | |
444 | ||
445 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
446 | ix++) | |
447 | if (strcmp (prop->key, key) == 0) | |
448 | return prop->value; | |
449 | ||
450 | return NULL; | |
451 | } | |
452 | ||
23181151 DJ |
453 | /* Return the BFD architecture associated with this target |
454 | description, or NULL if no architecture was specified. */ | |
455 | ||
456 | const struct bfd_arch_info * | |
457 | tdesc_architecture (const struct target_desc *target_desc) | |
458 | { | |
459 | return target_desc->arch; | |
460 | } | |
08d16641 PA |
461 | |
462 | /* Return the OSABI associated with this target description, or | |
463 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
464 | ||
465 | enum gdb_osabi | |
466 | tdesc_osabi (const struct target_desc *target_desc) | |
467 | { | |
468 | return target_desc->osabi; | |
469 | } | |
470 | ||
23181151 DJ |
471 | \f |
472 | ||
123dc839 DJ |
473 | /* Return 1 if this target description includes any registers. */ |
474 | ||
475 | int | |
476 | tdesc_has_registers (const struct target_desc *target_desc) | |
477 | { | |
478 | int ix; | |
479 | struct tdesc_feature *feature; | |
480 | ||
481 | if (target_desc == NULL) | |
482 | return 0; | |
483 | ||
484 | for (ix = 0; | |
485 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
486 | ix++) | |
487 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
488 | return 1; | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
493 | /* Return the feature with the given name, if present, or NULL if | |
494 | the named feature is not found. */ | |
495 | ||
496 | const struct tdesc_feature * | |
497 | tdesc_find_feature (const struct target_desc *target_desc, | |
498 | const char *name) | |
499 | { | |
500 | int ix; | |
501 | struct tdesc_feature *feature; | |
502 | ||
503 | for (ix = 0; | |
504 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
505 | ix++) | |
506 | if (strcmp (feature->name, name) == 0) | |
507 | return feature; | |
508 | ||
509 | return NULL; | |
510 | } | |
511 | ||
512 | /* Return the name of FEATURE. */ | |
513 | ||
514 | const char * | |
515 | tdesc_feature_name (const struct tdesc_feature *feature) | |
516 | { | |
517 | return feature->name; | |
518 | } | |
519 | ||
ad068eab UW |
520 | /* Predefined types. */ |
521 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 522 | { |
81516450 | 523 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
524 | { "int8", TDESC_TYPE_INT8 }, |
525 | { "int16", TDESC_TYPE_INT16 }, | |
526 | { "int32", TDESC_TYPE_INT32 }, | |
527 | { "int64", TDESC_TYPE_INT64 }, | |
528 | { "int128", TDESC_TYPE_INT128 }, | |
529 | { "uint8", TDESC_TYPE_UINT8 }, | |
530 | { "uint16", TDESC_TYPE_UINT16 }, | |
531 | { "uint32", TDESC_TYPE_UINT32 }, | |
532 | { "uint64", TDESC_TYPE_UINT64 }, | |
533 | { "uint128", TDESC_TYPE_UINT128 }, | |
534 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
535 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
536 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
537 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 538 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 539 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 540 | }; |
81adfced | 541 | |
81516450 DE |
542 | /* Lookup a predefined type. */ |
543 | ||
544 | static struct tdesc_type * | |
545 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
546 | { | |
547 | int ix; | |
548 | struct tdesc_type *type; | |
549 | ||
550 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
551 | if (tdesc_predefined_types[ix].kind == kind) | |
552 | return &tdesc_predefined_types[ix]; | |
553 | ||
554 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
555 | } | |
556 | ||
123dc839 DJ |
557 | /* Return the type associated with ID in the context of FEATURE, or |
558 | NULL if none. */ | |
559 | ||
ad068eab | 560 | struct tdesc_type * |
123dc839 DJ |
561 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
562 | { | |
563 | int ix; | |
ad068eab | 564 | struct tdesc_type *type; |
123dc839 DJ |
565 | |
566 | /* First try target-defined types. */ | |
ad068eab UW |
567 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
568 | if (strcmp (type->name, id) == 0) | |
569 | return type; | |
123dc839 | 570 | |
81adfced DJ |
571 | /* Next try the predefined types. */ |
572 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
573 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 574 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
575 | |
576 | return NULL; | |
577 | } | |
ad068eab | 578 | |
9fd3625f L |
579 | /* Lookup type associated with ID. */ |
580 | ||
581 | struct type * | |
582 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
583 | { | |
584 | struct tdesc_arch_reg *reg; | |
585 | struct tdesc_arch_data *data; | |
586 | int i, num_regs; | |
587 | ||
19ba03f4 | 588 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
9fd3625f L |
589 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); |
590 | for (i = 0; i < num_regs; i++) | |
591 | { | |
592 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
593 | if (reg->reg | |
594 | && reg->reg->tdesc_type | |
595 | && reg->type | |
596 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
597 | return reg->type; | |
598 | } | |
599 | ||
600 | return NULL; | |
601 | } | |
602 | ||
ad068eab UW |
603 | /* Construct, if necessary, and return the GDB type implementing target |
604 | type TDESC_TYPE for architecture GDBARCH. */ | |
605 | ||
606 | static struct type * | |
607 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
608 | { | |
9fd3625f L |
609 | struct type *type; |
610 | ||
ad068eab UW |
611 | switch (tdesc_type->kind) |
612 | { | |
613 | /* Predefined types. */ | |
81516450 DE |
614 | case TDESC_TYPE_BOOL: |
615 | return builtin_type (gdbarch)->builtin_bool; | |
616 | ||
ad068eab | 617 | case TDESC_TYPE_INT8: |
df4df182 | 618 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
619 | |
620 | case TDESC_TYPE_INT16: | |
df4df182 | 621 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
622 | |
623 | case TDESC_TYPE_INT32: | |
df4df182 | 624 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
625 | |
626 | case TDESC_TYPE_INT64: | |
df4df182 | 627 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
628 | |
629 | case TDESC_TYPE_INT128: | |
df4df182 | 630 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
631 | |
632 | case TDESC_TYPE_UINT8: | |
df4df182 | 633 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
634 | |
635 | case TDESC_TYPE_UINT16: | |
df4df182 | 636 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
637 | |
638 | case TDESC_TYPE_UINT32: | |
df4df182 | 639 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
640 | |
641 | case TDESC_TYPE_UINT64: | |
df4df182 | 642 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
643 | |
644 | case TDESC_TYPE_UINT128: | |
df4df182 | 645 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
646 | |
647 | case TDESC_TYPE_CODE_PTR: | |
648 | return builtin_type (gdbarch)->builtin_func_ptr; | |
649 | ||
650 | case TDESC_TYPE_DATA_PTR: | |
651 | return builtin_type (gdbarch)->builtin_data_ptr; | |
652 | ||
9fd3625f L |
653 | default: |
654 | break; | |
655 | } | |
656 | ||
657 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
658 | if (type) | |
659 | return type; | |
660 | ||
661 | switch (tdesc_type->kind) | |
662 | { | |
ad068eab | 663 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 664 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 665 | floatformats_ieee_single); |
ad068eab UW |
666 | |
667 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 668 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 669 | floatformats_ieee_double); |
ad068eab UW |
670 | |
671 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 672 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 673 | floatformats_arm_ext); |
ad068eab | 674 | |
9fd3625f L |
675 | case TDESC_TYPE_I387_EXT: |
676 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
677 | floatformats_i387_ext); | |
678 | ||
ad068eab UW |
679 | /* Types defined by a target feature. */ |
680 | case TDESC_TYPE_VECTOR: | |
681 | { | |
682 | struct type *type, *field_type; | |
683 | ||
684 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
685 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
686 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
687 | ||
688 | return type; | |
689 | } | |
690 | ||
f5dff777 DJ |
691 | case TDESC_TYPE_STRUCT: |
692 | { | |
693 | struct type *type, *field_type; | |
694 | struct tdesc_type_field *f; | |
695 | int ix; | |
696 | ||
697 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); | |
698 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
699 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
700 | ||
701 | for (ix = 0; | |
702 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
703 | ix++) | |
704 | { | |
81516450 | 705 | if (f->start != -1 && f->end != -1) |
f5dff777 DJ |
706 | { |
707 | /* Bitfield. */ | |
708 | struct field *fld; | |
709 | struct type *field_type; | |
710 | int bitsize, total_size; | |
711 | ||
81516450 | 712 | /* This invariant should be preserved while creating types. */ |
f5dff777 | 713 | gdb_assert (tdesc_type->u.u.size != 0); |
81516450 DE |
714 | if (f->type != NULL) |
715 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
716 | else if (tdesc_type->u.u.size > 4) | |
f5dff777 DJ |
717 | field_type = builtin_type (gdbarch)->builtin_uint64; |
718 | else | |
719 | field_type = builtin_type (gdbarch)->builtin_uint32; | |
720 | ||
721 | fld = append_composite_type_field_raw (type, xstrdup (f->name), | |
722 | field_type); | |
723 | ||
724 | /* For little-endian, BITPOS counts from the LSB of | |
725 | the structure and marks the LSB of the field. For | |
726 | big-endian, BITPOS counts from the MSB of the | |
727 | structure and marks the MSB of the field. Either | |
728 | way, it is the number of bits to the "left" of the | |
729 | field. To calculate this in big-endian, we need | |
730 | the total size of the structure. */ | |
731 | bitsize = f->end - f->start + 1; | |
732 | total_size = tdesc_type->u.u.size * TARGET_CHAR_BIT; | |
733 | if (gdbarch_bits_big_endian (gdbarch)) | |
f41f5e61 | 734 | SET_FIELD_BITPOS (fld[0], total_size - f->start - bitsize); |
f5dff777 | 735 | else |
f41f5e61 | 736 | SET_FIELD_BITPOS (fld[0], f->start); |
f5dff777 DJ |
737 | FIELD_BITSIZE (fld[0]) = bitsize; |
738 | } | |
739 | else | |
740 | { | |
81516450 | 741 | gdb_assert (f->start == -1 && f->end == -1); |
f5dff777 DJ |
742 | field_type = tdesc_gdb_type (gdbarch, f->type); |
743 | append_composite_type_field (type, xstrdup (f->name), | |
744 | field_type); | |
745 | } | |
746 | } | |
747 | ||
748 | if (tdesc_type->u.u.size != 0) | |
749 | TYPE_LENGTH (type) = tdesc_type->u.u.size; | |
750 | return type; | |
751 | } | |
752 | ||
ad068eab UW |
753 | case TDESC_TYPE_UNION: |
754 | { | |
755 | struct type *type, *field_type; | |
756 | struct tdesc_type_field *f; | |
757 | int ix; | |
758 | ||
e9bb382b | 759 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
760 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
761 | ||
762 | for (ix = 0; | |
763 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
764 | ix++) | |
765 | { | |
766 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
767 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
768 | ||
f5dff777 | 769 | /* If any of the children of a union are vectors, flag the |
ad068eab UW |
770 | union as a vector also. This allows e.g. a union of two |
771 | vector types to show up automatically in "info vector". */ | |
772 | if (TYPE_VECTOR (field_type)) | |
773 | TYPE_VECTOR (type) = 1; | |
774 | } | |
f5dff777 DJ |
775 | return type; |
776 | } | |
777 | ||
778 | case TDESC_TYPE_FLAGS: | |
779 | { | |
81516450 | 780 | struct tdesc_type_field *f; |
f5dff777 DJ |
781 | int ix; |
782 | ||
3494b66d | 783 | type = arch_flags_type (gdbarch, tdesc_type->name, |
81516450 DE |
784 | tdesc_type->u.u.size); |
785 | for (ix = 0; | |
786 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
787 | ix++) | |
788 | { | |
789 | struct type *field_type; | |
790 | int bitsize = f->end - f->start + 1; | |
791 | ||
792 | gdb_assert (f->type != NULL); | |
793 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
794 | append_flags_type_field (type, f->start, bitsize, | |
795 | field_type, f->name); | |
796 | } | |
797 | ||
798 | return type; | |
799 | } | |
800 | ||
801 | case TDESC_TYPE_ENUM: | |
802 | { | |
803 | struct tdesc_type_field *f; | |
804 | int ix; | |
805 | ||
806 | type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
807 | tdesc_type->u.u.size, tdesc_type->name); | |
808 | TYPE_UNSIGNED (type) = 1; | |
f5dff777 | 809 | for (ix = 0; |
81516450 | 810 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); |
f5dff777 | 811 | ix++) |
81516450 DE |
812 | { |
813 | struct field *fld | |
814 | = append_composite_type_field_raw (type, xstrdup (f->name), | |
815 | NULL); | |
816 | ||
817 | SET_FIELD_BITPOS (fld[0], f->start); | |
818 | } | |
ad068eab UW |
819 | |
820 | return type; | |
821 | } | |
822 | } | |
823 | ||
824 | internal_error (__FILE__, __LINE__, | |
825 | "Type \"%s\" has an unknown kind %d", | |
826 | tdesc_type->name, tdesc_type->kind); | |
827 | } | |
123dc839 DJ |
828 | \f |
829 | ||
830 | /* Support for registers from target descriptions. */ | |
831 | ||
832 | /* Construct the per-gdbarch data. */ | |
833 | ||
834 | static void * | |
835 | tdesc_data_init (struct obstack *obstack) | |
836 | { | |
837 | struct tdesc_arch_data *data; | |
838 | ||
839 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
840 | return data; | |
841 | } | |
842 | ||
843 | /* Similar, but for the temporary copy used during architecture | |
844 | initialization. */ | |
845 | ||
846 | struct tdesc_arch_data * | |
847 | tdesc_data_alloc (void) | |
848 | { | |
41bf6aca | 849 | return XCNEW (struct tdesc_arch_data); |
123dc839 DJ |
850 | } |
851 | ||
852 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
853 | to be used (for instance if it was unsuitable for the | |
854 | architecture). */ | |
855 | ||
856 | void | |
857 | tdesc_data_cleanup (void *data_untyped) | |
858 | { | |
19ba03f4 | 859 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 860 | |
ad068eab | 861 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
862 | xfree (data); |
863 | } | |
864 | ||
865 | /* Search FEATURE for a register named NAME. */ | |
866 | ||
7cc46491 DJ |
867 | static struct tdesc_reg * |
868 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
869 | const char *name) | |
123dc839 DJ |
870 | { |
871 | int ixr; | |
872 | struct tdesc_reg *reg; | |
873 | ||
874 | for (ixr = 0; | |
875 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
876 | ixr++) | |
877 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 878 | return reg; |
123dc839 | 879 | |
7cc46491 DJ |
880 | return NULL; |
881 | } | |
882 | ||
883 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
884 | ||
885 | int | |
886 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
887 | struct tdesc_arch_data *data, | |
888 | int regno, const char *name) | |
889 | { | |
ad068eab | 890 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
891 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
892 | ||
893 | if (reg == NULL) | |
894 | return 0; | |
895 | ||
896 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
897 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
898 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
899 | ||
900 | arch_reg.reg = reg; | |
901 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 902 | return 1; |
123dc839 DJ |
903 | } |
904 | ||
58d6951d DJ |
905 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
906 | register number to it. */ | |
907 | ||
908 | int | |
909 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
910 | const char *name) | |
911 | { | |
912 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
913 | ||
914 | if (reg == NULL) | |
915 | return 0; | |
916 | ||
917 | return 1; | |
918 | } | |
919 | ||
7cc46491 DJ |
920 | /* Search FEATURE for a register whose name is in NAMES and assign |
921 | REGNO to it. */ | |
123dc839 DJ |
922 | |
923 | int | |
924 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
925 | struct tdesc_arch_data *data, | |
926 | int regno, const char *const names[]) | |
927 | { | |
928 | int i; | |
929 | ||
930 | for (i = 0; names[i] != NULL; i++) | |
931 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
932 | return 1; | |
933 | ||
934 | return 0; | |
935 | } | |
936 | ||
7cc46491 DJ |
937 | /* Search FEATURE for a register named NAME, and return its size in |
938 | bits. The register must exist. */ | |
939 | ||
940 | int | |
941 | tdesc_register_size (const struct tdesc_feature *feature, | |
942 | const char *name) | |
943 | { | |
944 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
945 | ||
946 | gdb_assert (reg != NULL); | |
947 | return reg->bitsize; | |
948 | } | |
949 | ||
123dc839 DJ |
950 | /* Look up a register by its GDB internal register number. */ |
951 | ||
ad068eab UW |
952 | static struct tdesc_arch_reg * |
953 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 954 | { |
123dc839 DJ |
955 | struct tdesc_arch_data *data; |
956 | ||
19ba03f4 | 957 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab UW |
958 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
959 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
960 | else |
961 | return NULL; | |
962 | } | |
963 | ||
ad068eab UW |
964 | static struct tdesc_reg * |
965 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
966 | { | |
967 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 968 | |
ad068eab UW |
969 | return reg? reg->reg : NULL; |
970 | } | |
971 | ||
f8b73d13 DJ |
972 | /* Return the name of register REGNO, from the target description or |
973 | from an architecture-provided pseudo_register_name method. */ | |
974 | ||
975 | const char * | |
d93859e2 | 976 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 977 | { |
d93859e2 UW |
978 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
979 | int num_regs = gdbarch_num_regs (gdbarch); | |
980 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
981 | |
982 | if (reg != NULL) | |
983 | return reg->name; | |
984 | ||
985 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
986 | { | |
19ba03f4 SM |
987 | struct tdesc_arch_data *data |
988 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 989 | |
123dc839 | 990 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 991 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
992 | } |
993 | ||
994 | return ""; | |
995 | } | |
996 | ||
58d6951d | 997 | struct type * |
123dc839 DJ |
998 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
999 | { | |
ad068eab UW |
1000 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1001 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1002 | int num_regs = gdbarch_num_regs (gdbarch); |
1003 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1004 | ||
1005 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1006 | { | |
19ba03f4 SM |
1007 | struct tdesc_arch_data *data |
1008 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1009 | |
123dc839 DJ |
1010 | gdb_assert (data->pseudo_register_type != NULL); |
1011 | return data->pseudo_register_type (gdbarch, regno); | |
1012 | } | |
1013 | ||
1014 | if (reg == NULL) | |
1015 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1016 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1017 | |
ad068eab | 1018 | if (arch_reg->type == NULL) |
123dc839 | 1019 | { |
ad068eab UW |
1020 | /* First check for a predefined or target defined type. */ |
1021 | if (reg->tdesc_type) | |
1022 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
1023 | ||
1024 | /* Next try size-sensitive type shortcuts. */ | |
1025 | else if (strcmp (reg->type, "float") == 0) | |
1026 | { | |
1027 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1028 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1029 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1030 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1031 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1032 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1033 | else | |
1034 | { | |
1035 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1036 | reg->name, reg->bitsize); | |
1037 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1038 | } | |
1039 | } | |
1040 | else if (strcmp (reg->type, "int") == 0) | |
1041 | { | |
1042 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1043 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1044 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1045 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1046 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1047 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1048 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1049 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1050 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1051 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1052 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1053 | /* A bit desperate by this point... */ |
ad068eab UW |
1054 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1055 | else | |
1056 | { | |
1057 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
1058 | reg->name, reg->bitsize); | |
1059 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1060 | } | |
1061 | } | |
1062 | ||
1063 | if (arch_reg->type == NULL) | |
1064 | internal_error (__FILE__, __LINE__, | |
1065 | "Register \"%s\" has an unknown type \"%s\"", | |
1066 | reg->name, reg->type); | |
123dc839 | 1067 | } |
123dc839 | 1068 | |
ad068eab | 1069 | return arch_reg->type; |
123dc839 DJ |
1070 | } |
1071 | ||
1072 | static int | |
1073 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1074 | { | |
1075 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1076 | ||
1077 | if (reg != NULL) | |
1078 | return reg->target_regnum; | |
1079 | else | |
1080 | return -1; | |
1081 | } | |
1082 | ||
1083 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
1084 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
1085 | Unlike a gdbarch register_reggroup_p method, this function will |
1086 | return -1 if it does not know; the caller should handle registers | |
1087 | with no specified group. | |
123dc839 DJ |
1088 | |
1089 | Arbitrary strings (other than "general", "float", and "vector") | |
1090 | from the description are not used; they cause the register to be | |
1091 | displayed in "info all-registers" but excluded from "info | |
1092 | registers" et al. The names of containing features are also not | |
1093 | used. This might be extended to display registers in some more | |
1094 | useful groupings. | |
1095 | ||
1096 | The save-restore flag is also implemented here. */ | |
1097 | ||
f8b73d13 DJ |
1098 | int |
1099 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1100 | struct reggroup *reggroup) | |
123dc839 | 1101 | { |
123dc839 DJ |
1102 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1103 | ||
123dc839 DJ |
1104 | if (reg != NULL && reg->group != NULL) |
1105 | { | |
1106 | int general_p = 0, float_p = 0, vector_p = 0; | |
1107 | ||
1108 | if (strcmp (reg->group, "general") == 0) | |
1109 | general_p = 1; | |
1110 | else if (strcmp (reg->group, "float") == 0) | |
1111 | float_p = 1; | |
1112 | else if (strcmp (reg->group, "vector") == 0) | |
1113 | vector_p = 1; | |
1114 | ||
1115 | if (reggroup == float_reggroup) | |
1116 | return float_p; | |
1117 | ||
1118 | if (reggroup == vector_reggroup) | |
1119 | return vector_p; | |
1120 | ||
1121 | if (reggroup == general_reggroup) | |
1122 | return general_p; | |
1123 | } | |
1124 | ||
1125 | if (reg != NULL | |
1126 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1127 | return reg->save_restore; | |
1128 | ||
f8b73d13 DJ |
1129 | return -1; |
1130 | } | |
1131 | ||
1132 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1133 | group specified go to the default reggroup function and are handled | |
1134 | by type. */ | |
1135 | ||
1136 | static int | |
1137 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1138 | struct reggroup *reggroup) | |
1139 | { | |
1140 | int num_regs = gdbarch_num_regs (gdbarch); | |
1141 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1142 | int ret; | |
1143 | ||
1144 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1145 | { | |
19ba03f4 SM |
1146 | struct tdesc_arch_data *data |
1147 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1148 | |
58d6951d DJ |
1149 | if (data->pseudo_register_reggroup_p != NULL) |
1150 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1151 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1152 | } |
1153 | ||
1154 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1155 | if (ret != -1) | |
1156 | return ret; | |
1157 | ||
123dc839 DJ |
1158 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1159 | } | |
1160 | ||
1161 | /* Record architecture-specific functions to call for pseudo-register | |
1162 | support. */ | |
1163 | ||
1164 | void | |
1165 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1166 | gdbarch_register_name_ftype *pseudo_name) | |
1167 | { | |
19ba03f4 SM |
1168 | struct tdesc_arch_data *data |
1169 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1170 | |
1171 | data->pseudo_register_name = pseudo_name; | |
1172 | } | |
1173 | ||
1174 | void | |
1175 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1176 | gdbarch_register_type_ftype *pseudo_type) | |
1177 | { | |
19ba03f4 SM |
1178 | struct tdesc_arch_data *data |
1179 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1180 | |
1181 | data->pseudo_register_type = pseudo_type; | |
1182 | } | |
1183 | ||
1184 | void | |
1185 | set_tdesc_pseudo_register_reggroup_p | |
1186 | (struct gdbarch *gdbarch, | |
1187 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1188 | { | |
19ba03f4 SM |
1189 | struct tdesc_arch_data *data |
1190 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1191 | |
1192 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1193 | } | |
1194 | ||
1195 | /* Update GDBARCH to use the target description for registers. */ | |
1196 | ||
1197 | void | |
1198 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1199 | const struct target_desc *target_desc, |
123dc839 DJ |
1200 | struct tdesc_arch_data *early_data) |
1201 | { | |
1202 | int num_regs = gdbarch_num_regs (gdbarch); | |
c6913b7d | 1203 | int ixf, ixr; |
123dc839 DJ |
1204 | struct tdesc_feature *feature; |
1205 | struct tdesc_reg *reg; | |
1206 | struct tdesc_arch_data *data; | |
ad068eab | 1207 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1208 | htab_t reg_hash; |
1209 | ||
123dc839 DJ |
1210 | /* We can't use the description for registers if it doesn't describe |
1211 | any. This function should only be called after validating | |
1212 | registers, so the caller should know that registers are | |
1213 | included. */ | |
1214 | gdb_assert (tdesc_has_registers (target_desc)); | |
1215 | ||
19ba03f4 | 1216 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1217 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1218 | xfree (early_data); |
1219 | ||
1220 | /* Build up a set of all registers, so that we can assign register | |
1221 | numbers where needed. The hash table expands as necessary, so | |
1222 | the initial size is arbitrary. */ | |
1223 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1224 | for (ixf = 0; | |
1225 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1226 | ixf++) | |
1227 | for (ixr = 0; | |
1228 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1229 | ixr++) | |
1230 | { | |
1231 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1232 | ||
1233 | *slot = reg; | |
1234 | } | |
1235 | ||
1236 | /* Remove any registers which were assigned numbers by the | |
1237 | architecture. */ | |
ad068eab UW |
1238 | for (ixr = 0; |
1239 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1240 | ixr++) | |
1241 | if (arch_reg->reg) | |
1242 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1243 | |
1244 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1245 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1246 | Iterate over the features, not the hash table, so that the order |
1247 | matches that in the target description. */ | |
1248 | ||
ad068eab UW |
1249 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1250 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1251 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1252 | for (ixf = 0; |
1253 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1254 | ixf++) | |
1255 | for (ixr = 0; | |
1256 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1257 | ixr++) | |
1258 | if (htab_find (reg_hash, reg) != NULL) | |
1259 | { | |
ad068eab UW |
1260 | new_arch_reg.reg = reg; |
1261 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1262 | num_regs++; |
1263 | } | |
1264 | ||
1265 | htab_delete (reg_hash); | |
1266 | ||
1267 | /* Update the architecture. */ | |
1268 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1269 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1270 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1271 | set_gdbarch_remote_register_number (gdbarch, | |
1272 | tdesc_remote_register_number); | |
1273 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1274 | } | |
1275 | \f | |
1276 | ||
424163ea DJ |
1277 | /* Methods for constructing a target description. */ |
1278 | ||
123dc839 DJ |
1279 | static void |
1280 | tdesc_free_reg (struct tdesc_reg *reg) | |
1281 | { | |
1282 | xfree (reg->name); | |
1283 | xfree (reg->type); | |
1284 | xfree (reg->group); | |
1285 | xfree (reg); | |
1286 | } | |
1287 | ||
1288 | void | |
1289 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1290 | int regnum, int save_restore, const char *group, | |
1291 | int bitsize, const char *type) | |
1292 | { | |
41bf6aca | 1293 | struct tdesc_reg *reg = XCNEW (struct tdesc_reg); |
123dc839 DJ |
1294 | |
1295 | reg->name = xstrdup (name); | |
1296 | reg->target_regnum = regnum; | |
1297 | reg->save_restore = save_restore; | |
1298 | reg->group = group ? xstrdup (group) : NULL; | |
1299 | reg->bitsize = bitsize; | |
c8c12293 | 1300 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
123dc839 DJ |
1301 | |
1302 | /* If the register's type is target-defined, look it up now. We may not | |
1303 | have easy access to the containing feature when we want it later. */ | |
ad068eab | 1304 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
123dc839 DJ |
1305 | |
1306 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1307 | } | |
1308 | ||
81516450 DE |
1309 | /* Subroutine of tdesc_free_feature to simplify it. |
1310 | Note: We do not want to free any referenced types here (e.g., types of | |
1311 | fields of a struct). All types of a feature are recorded in | |
1312 | feature->types and are freed that way. */ | |
1313 | ||
ad068eab UW |
1314 | static void |
1315 | tdesc_free_type (struct tdesc_type *type) | |
1316 | { | |
ad068eab UW |
1317 | switch (type->kind) |
1318 | { | |
f5dff777 | 1319 | case TDESC_TYPE_STRUCT: |
ad068eab | 1320 | case TDESC_TYPE_UNION: |
81516450 DE |
1321 | case TDESC_TYPE_FLAGS: |
1322 | case TDESC_TYPE_ENUM: | |
ad068eab UW |
1323 | { |
1324 | struct tdesc_type_field *f; | |
1325 | int ix; | |
1326 | ||
1327 | for (ix = 0; | |
1328 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); | |
1329 | ix++) | |
1330 | xfree (f->name); | |
1331 | ||
1332 | VEC_free (tdesc_type_field, type->u.u.fields); | |
1333 | } | |
1334 | break; | |
1335 | ||
1336 | default: | |
1337 | break; | |
1338 | } | |
1339 | ||
a121b7c1 | 1340 | xfree ((char *) type->name); |
ad068eab UW |
1341 | xfree (type); |
1342 | } | |
1343 | ||
1344 | struct tdesc_type * | |
1345 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1346 | struct tdesc_type *field_type, int count) | |
1347 | { | |
41bf6aca | 1348 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
ad068eab UW |
1349 | |
1350 | type->name = xstrdup (name); | |
1351 | type->kind = TDESC_TYPE_VECTOR; | |
1352 | type->u.v.type = field_type; | |
1353 | type->u.v.count = count; | |
1354 | ||
1355 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1356 | return type; | |
1357 | } | |
1358 | ||
f5dff777 DJ |
1359 | struct tdesc_type * |
1360 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
1361 | { | |
41bf6aca | 1362 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
f5dff777 DJ |
1363 | |
1364 | type->name = xstrdup (name); | |
1365 | type->kind = TDESC_TYPE_STRUCT; | |
1366 | ||
1367 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1368 | return type; | |
1369 | } | |
1370 | ||
1371 | /* Set the total length of TYPE. Structs which contain bitfields may | |
1372 | omit the reserved bits, so the end of the last field may not | |
1373 | suffice. */ | |
1374 | ||
1375 | void | |
54157a25 | 1376 | tdesc_set_struct_size (struct tdesc_type *type, int size) |
f5dff777 DJ |
1377 | { |
1378 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1379 | gdb_assert (size > 0); |
f5dff777 DJ |
1380 | type->u.u.size = size; |
1381 | } | |
1382 | ||
ad068eab UW |
1383 | struct tdesc_type * |
1384 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1385 | { | |
41bf6aca | 1386 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
ad068eab UW |
1387 | |
1388 | type->name = xstrdup (name); | |
1389 | type->kind = TDESC_TYPE_UNION; | |
1390 | ||
1391 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1392 | return type; | |
1393 | } | |
1394 | ||
f5dff777 DJ |
1395 | struct tdesc_type * |
1396 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
54157a25 | 1397 | int size) |
f5dff777 | 1398 | { |
41bf6aca | 1399 | struct tdesc_type *type = XCNEW (struct tdesc_type); |
f5dff777 | 1400 | |
54157a25 DE |
1401 | gdb_assert (size > 0); |
1402 | ||
f5dff777 DJ |
1403 | type->name = xstrdup (name); |
1404 | type->kind = TDESC_TYPE_FLAGS; | |
81516450 | 1405 | type->u.u.size = size; |
f5dff777 DJ |
1406 | |
1407 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1408 | return type; | |
1409 | } | |
1410 | ||
81516450 DE |
1411 | struct tdesc_type * |
1412 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
1413 | int size) | |
1414 | { | |
1415 | struct tdesc_type *type = XCNEW (struct tdesc_type); | |
1416 | ||
1417 | gdb_assert (size > 0); | |
1418 | ||
1419 | type->name = xstrdup (name); | |
1420 | type->kind = TDESC_TYPE_ENUM; | |
1421 | type->u.u.size = size; | |
1422 | ||
1423 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1424 | return type; | |
1425 | } | |
1426 | ||
1427 | /* Add a new field to TYPE. */ | |
f5dff777 | 1428 | |
ad068eab UW |
1429 | void |
1430 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1431 | struct tdesc_type *field_type) | |
1432 | { | |
1433 | struct tdesc_type_field f = { 0 }; | |
1434 | ||
f5dff777 DJ |
1435 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1436 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab UW |
1437 | |
1438 | f.name = xstrdup (field_name); | |
1439 | f.type = field_type; | |
81516450 DE |
1440 | /* Initialize these values so we know this is not a bit-field |
1441 | when we print-c-tdesc. */ | |
1442 | f.start = -1; | |
1443 | f.end = -1; | |
ad068eab UW |
1444 | |
1445 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1446 | } | |
1447 | ||
81516450 | 1448 | /* Add a new typed bitfield to TYPE. */ |
f5dff777 DJ |
1449 | |
1450 | void | |
81516450 DE |
1451 | tdesc_add_typed_bitfield (struct tdesc_type *type, const char *field_name, |
1452 | int start, int end, struct tdesc_type *field_type) | |
f5dff777 DJ |
1453 | { |
1454 | struct tdesc_type_field f = { 0 }; | |
1455 | ||
81516450 DE |
1456 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1457 | || type->kind == TDESC_TYPE_FLAGS); | |
1458 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 DJ |
1459 | |
1460 | f.name = xstrdup (field_name); | |
1461 | f.start = start; | |
1462 | f.end = end; | |
81516450 | 1463 | f.type = field_type; |
f5dff777 DJ |
1464 | |
1465 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1466 | } | |
1467 | ||
81516450 DE |
1468 | /* Add a new untyped bitfield to TYPE. |
1469 | Untyped bitfields become either uint32 or uint64 depending on the size | |
1470 | of the underlying type. */ | |
1471 | ||
1472 | void | |
1473 | tdesc_add_bitfield (struct tdesc_type *type, const char *field_name, | |
1474 | int start, int end) | |
1475 | { | |
1476 | struct tdesc_type *field_type; | |
1477 | ||
1478 | gdb_assert (start >= 0 && end >= start); | |
1479 | ||
1480 | if (type->u.u.size > 4) | |
1481 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
1482 | else | |
1483 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1484 | ||
1485 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1486 | } | |
1487 | ||
1488 | /* A flag is just a typed(bool) single-bit bitfield. | |
1489 | This function is kept to minimize changes in generated files. */ | |
1490 | ||
f5dff777 DJ |
1491 | void |
1492 | tdesc_add_flag (struct tdesc_type *type, int start, | |
1493 | const char *flag_name) | |
1494 | { | |
81516450 | 1495 | struct tdesc_type_field f = { 0 }; |
f5dff777 | 1496 | |
81516450 DE |
1497 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1498 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 DJ |
1499 | |
1500 | f.name = xstrdup (flag_name); | |
1501 | f.start = start; | |
81516450 DE |
1502 | f.end = start; |
1503 | f.type = tdesc_predefined_type (TDESC_TYPE_BOOL); | |
f5dff777 | 1504 | |
81516450 DE |
1505 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); |
1506 | } | |
1507 | ||
1508 | void | |
1509 | tdesc_add_enum_value (struct tdesc_type *type, int value, | |
1510 | const char *name) | |
1511 | { | |
1512 | struct tdesc_type_field f = { 0 }; | |
1513 | ||
1514 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
1515 | ||
1516 | f.name = xstrdup (name); | |
1517 | f.start = value; | |
1518 | f.end = -1; | |
1519 | f.type = tdesc_predefined_type (TDESC_TYPE_INT32); | |
1520 | ||
1521 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
f5dff777 DJ |
1522 | } |
1523 | ||
123dc839 DJ |
1524 | static void |
1525 | tdesc_free_feature (struct tdesc_feature *feature) | |
1526 | { | |
1527 | struct tdesc_reg *reg; | |
ad068eab | 1528 | struct tdesc_type *type; |
123dc839 DJ |
1529 | int ix; |
1530 | ||
1531 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) | |
1532 | tdesc_free_reg (reg); | |
1533 | VEC_free (tdesc_reg_p, feature->registers); | |
1534 | ||
ad068eab UW |
1535 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
1536 | tdesc_free_type (type); | |
1537 | VEC_free (tdesc_type_p, feature->types); | |
123dc839 DJ |
1538 | |
1539 | xfree (feature->name); | |
1540 | xfree (feature); | |
1541 | } | |
1542 | ||
1543 | struct tdesc_feature * | |
1544 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1545 | { | |
41bf6aca | 1546 | struct tdesc_feature *new_feature = XCNEW (struct tdesc_feature); |
123dc839 DJ |
1547 | |
1548 | new_feature->name = xstrdup (name); | |
1549 | ||
1550 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1551 | return new_feature; | |
1552 | } | |
1553 | ||
424163ea DJ |
1554 | struct target_desc * |
1555 | allocate_target_description (void) | |
1556 | { | |
41bf6aca | 1557 | return XCNEW (struct target_desc); |
424163ea | 1558 | } |
29709017 | 1559 | |
23181151 DJ |
1560 | static void |
1561 | free_target_description (void *arg) | |
1562 | { | |
19ba03f4 | 1563 | struct target_desc *target_desc = (struct target_desc *) arg; |
123dc839 | 1564 | struct tdesc_feature *feature; |
23181151 DJ |
1565 | struct property *prop; |
1566 | int ix; | |
1567 | ||
123dc839 DJ |
1568 | for (ix = 0; |
1569 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
1570 | ix++) | |
1571 | tdesc_free_feature (feature); | |
1572 | VEC_free (tdesc_feature_p, target_desc->features); | |
1573 | ||
23181151 DJ |
1574 | for (ix = 0; |
1575 | VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1576 | ix++) | |
1577 | { | |
1578 | xfree (prop->key); | |
1579 | xfree (prop->value); | |
1580 | } | |
1581 | VEC_free (property_s, target_desc->properties); | |
1582 | ||
e35359c5 UW |
1583 | VEC_free (arch_p, target_desc->compatible); |
1584 | ||
23181151 DJ |
1585 | xfree (target_desc); |
1586 | } | |
1587 | ||
1588 | struct cleanup * | |
1589 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1590 | { | |
1591 | return make_cleanup (free_target_description, target_desc); | |
1592 | } | |
1593 | ||
e35359c5 UW |
1594 | void |
1595 | tdesc_add_compatible (struct target_desc *target_desc, | |
1596 | const struct bfd_arch_info *compatible) | |
1597 | { | |
1598 | const struct bfd_arch_info *compat; | |
1599 | int ix; | |
1600 | ||
1601 | /* If this instance of GDB is compiled without BFD support for the | |
1602 | compatible architecture, simply ignore it -- we would not be able | |
1603 | to handle it anyway. */ | |
1604 | if (compatible == NULL) | |
1605 | return; | |
1606 | ||
1607 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1608 | ix++) | |
1609 | if (compat == compatible) | |
1610 | internal_error (__FILE__, __LINE__, | |
1611 | _("Attempted to add duplicate " | |
1612 | "compatible architecture \"%s\""), | |
1613 | compatible->printable_name); | |
1614 | ||
1615 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1616 | } | |
1617 | ||
29709017 DJ |
1618 | void |
1619 | set_tdesc_property (struct target_desc *target_desc, | |
1620 | const char *key, const char *value) | |
1621 | { | |
1622 | struct property *prop, new_prop; | |
1623 | int ix; | |
1624 | ||
1625 | gdb_assert (key != NULL && value != NULL); | |
1626 | ||
1627 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1628 | ix++) | |
1629 | if (strcmp (prop->key, key) == 0) | |
1630 | internal_error (__FILE__, __LINE__, | |
1631 | _("Attempted to add duplicate property \"%s\""), key); | |
1632 | ||
23181151 DJ |
1633 | new_prop.key = xstrdup (key); |
1634 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1635 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1636 | } | |
23181151 DJ |
1637 | |
1638 | void | |
1639 | set_tdesc_architecture (struct target_desc *target_desc, | |
1640 | const struct bfd_arch_info *arch) | |
1641 | { | |
1642 | target_desc->arch = arch; | |
1643 | } | |
08d16641 PA |
1644 | |
1645 | void | |
1646 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1647 | { | |
1648 | target_desc->osabi = osabi; | |
1649 | } | |
23181151 DJ |
1650 | \f |
1651 | ||
1652 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1653 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1654 | ||
1655 | /* Helper functions for the CLI commands. */ | |
1656 | ||
1657 | static void | |
1658 | set_tdesc_cmd (char *args, int from_tty) | |
1659 | { | |
635c7e8a | 1660 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1661 | } |
1662 | ||
1663 | static void | |
1664 | show_tdesc_cmd (char *args, int from_tty) | |
1665 | { | |
1666 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1667 | } | |
1668 | ||
1669 | static void | |
1670 | unset_tdesc_cmd (char *args, int from_tty) | |
1671 | { | |
635c7e8a | 1672 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1673 | } |
1674 | ||
1675 | static void | |
1676 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1677 | struct cmd_list_element *c) | |
1678 | { | |
6ecd4729 PA |
1679 | xfree (target_description_filename); |
1680 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1681 | ||
23181151 DJ |
1682 | target_clear_description (); |
1683 | target_find_description (); | |
1684 | } | |
1685 | ||
1686 | static void | |
1687 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1688 | struct cmd_list_element *c, | |
1689 | const char *value) | |
1690 | { | |
6ecd4729 PA |
1691 | value = target_description_filename; |
1692 | ||
23181151 | 1693 | if (value != NULL && *value != '\0') |
3e43a32a | 1694 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1695 | value); |
1696 | else | |
3e43a32a MS |
1697 | printf_filtered (_("The target description will be " |
1698 | "read from the target.\n")); | |
23181151 DJ |
1699 | } |
1700 | ||
1701 | static void | |
1702 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1703 | { | |
1704 | xfree (target_description_filename); | |
1705 | target_description_filename = NULL; | |
1706 | target_clear_description (); | |
1707 | target_find_description (); | |
1708 | } | |
1709 | ||
81adfced DJ |
1710 | static void |
1711 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1712 | { | |
1713 | const struct target_desc *tdesc; | |
e35359c5 | 1714 | const struct bfd_arch_info *compatible; |
81adfced DJ |
1715 | const char *filename, *inp; |
1716 | char *function, *outp; | |
1717 | struct property *prop; | |
1718 | struct tdesc_feature *feature; | |
1719 | struct tdesc_reg *reg; | |
ad068eab UW |
1720 | struct tdesc_type *type; |
1721 | struct tdesc_type_field *f; | |
81adfced | 1722 | int ix, ix2, ix3; |
4e2f8df6 | 1723 | int printed_field_type = 0; |
81adfced DJ |
1724 | |
1725 | /* Use the global target-supplied description, not the current | |
1726 | architecture's. This lets a GDB for one architecture generate C | |
1727 | for another architecture's description, even though the gdbarch | |
1728 | initialization code will reject the new description. */ | |
1729 | tdesc = current_target_desc; | |
1730 | if (tdesc == NULL) | |
1731 | error (_("There is no target description to print.")); | |
1732 | ||
1733 | if (target_description_filename == NULL) | |
1734 | error (_("The current target description did not come from an XML file.")); | |
1735 | ||
1736 | filename = lbasename (target_description_filename); | |
224c3ddb | 1737 | function = (char *) alloca (strlen (filename) + 1); |
81adfced DJ |
1738 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1739 | if (*inp == '.') | |
1740 | break; | |
1741 | else if (*inp == '-') | |
1742 | *outp++ = '_'; | |
1743 | else | |
1744 | *outp++ = *inp; | |
1745 | *outp = '\0'; | |
1746 | ||
1747 | /* Standard boilerplate. */ | |
c4bfde41 JK |
1748 | printf_unfiltered ("/* THIS FILE IS GENERATED. " |
1749 | "-*- buffer-read-only: t -*- vi" | |
1750 | ":set ro:\n"); | |
1751 | printf_unfiltered (" Original: %s */\n\n", filename); | |
81adfced | 1752 | printf_unfiltered ("#include \"defs.h\"\n"); |
c3f08eb7 | 1753 | printf_unfiltered ("#include \"osabi.h\"\n"); |
81adfced DJ |
1754 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1755 | printf_unfiltered ("\n"); | |
1756 | ||
1757 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1758 | printf_unfiltered ("static void\n"); | |
1759 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1760 | printf_unfiltered ("{\n"); | |
1761 | printf_unfiltered | |
1762 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1763 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
4e2f8df6 SDJ |
1764 | |
1765 | /* Now we do some "filtering" in order to know which variables to | |
1766 | declare. This is needed because otherwise we would declare unused | |
1767 | variables `field_type' and `type'. */ | |
1768 | for (ix = 0; | |
1769 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1770 | ix++) | |
1771 | { | |
1772 | int printed_desc_type = 0; | |
1773 | ||
1774 | for (ix2 = 0; | |
1775 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); | |
1776 | ix2++) | |
1777 | { | |
1778 | if (!printed_field_type) | |
1779 | { | |
1780 | printf_unfiltered (" struct tdesc_type *field_type;\n"); | |
1781 | printed_field_type = 1; | |
1782 | } | |
1783 | ||
81516450 DE |
1784 | if ((type->kind == TDESC_TYPE_UNION |
1785 | || type->kind == TDESC_TYPE_STRUCT | |
1786 | || type->kind == TDESC_TYPE_FLAGS | |
1787 | || type->kind == TDESC_TYPE_ENUM) | |
1788 | && VEC_length (tdesc_type_field, type->u.u.fields) > 0) | |
4e2f8df6 SDJ |
1789 | { |
1790 | printf_unfiltered (" struct tdesc_type *type;\n"); | |
1791 | printed_desc_type = 1; | |
1792 | break; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | if (printed_desc_type) | |
1797 | break; | |
1798 | } | |
1799 | ||
81adfced DJ |
1800 | printf_unfiltered ("\n"); |
1801 | ||
1802 | if (tdesc_architecture (tdesc) != NULL) | |
1803 | { | |
1804 | printf_unfiltered | |
1805 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1806 | tdesc_architecture (tdesc)->printable_name); | |
1807 | printf_unfiltered ("\n"); | |
1808 | } | |
1809 | ||
c3f08eb7 L |
1810 | if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN |
1811 | && tdesc_osabi (tdesc) < GDB_OSABI_INVALID) | |
1812 | { | |
1813 | printf_unfiltered | |
1814 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1815 | gdbarch_osabi_name (tdesc_osabi (tdesc))); | |
1816 | printf_unfiltered ("\n"); | |
1817 | } | |
1818 | ||
e35359c5 UW |
1819 | for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible); |
1820 | ix++) | |
1821 | { | |
1822 | printf_unfiltered | |
1823 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1824 | compatible->printable_name); | |
1825 | } | |
1826 | if (ix) | |
1827 | printf_unfiltered ("\n"); | |
1828 | ||
81adfced DJ |
1829 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); |
1830 | ix++) | |
1831 | { | |
1832 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1833 | prop->key, prop->value); | |
1834 | } | |
1835 | ||
1836 | for (ix = 0; | |
1837 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1838 | ix++) | |
1839 | { | |
3e43a32a MS |
1840 | printf_unfiltered (" \ |
1841 | feature = tdesc_create_feature (result, \"%s\");\n", | |
81adfced DJ |
1842 | feature->name); |
1843 | ||
1844 | for (ix2 = 0; | |
ad068eab | 1845 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1846 | ix2++) |
1847 | { | |
ad068eab | 1848 | switch (type->kind) |
81adfced | 1849 | { |
ad068eab | 1850 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1851 | printf_unfiltered |
1852 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1853 | type->u.v.type->name); |
81adfced | 1854 | printf_unfiltered |
ad068eab UW |
1855 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1856 | type->name, type->u.v.count); | |
81adfced | 1857 | break; |
f92b06da | 1858 | case TDESC_TYPE_STRUCT: |
81516450 DE |
1859 | case TDESC_TYPE_FLAGS: |
1860 | if (type->kind == TDESC_TYPE_STRUCT) | |
1861 | { | |
1862 | printf_unfiltered | |
1863 | (" type = tdesc_create_struct (feature, \"%s\");\n", | |
1864 | type->name); | |
1865 | if (type->u.u.size != 0) | |
1866 | printf_unfiltered | |
1867 | (" tdesc_set_struct_size (type, %d);\n", | |
1868 | type->u.u.size); | |
1869 | } | |
1870 | else | |
1871 | { | |
1872 | printf_unfiltered | |
1873 | (" type = tdesc_create_flags (feature, \"%s\", %d);\n", | |
1874 | type->name, type->u.u.size); | |
1875 | } | |
f92b06da WT |
1876 | for (ix3 = 0; |
1877 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1878 | ix3++) | |
1879 | { | |
81516450 DE |
1880 | const char *type_name; |
1881 | ||
1882 | gdb_assert (f->type != NULL); | |
1883 | type_name = f->type->name; | |
1884 | ||
1885 | /* To minimize changes to generated files, don't emit type | |
1886 | info for fields that have defaulted types. */ | |
1887 | if (f->start != -1) | |
1888 | { | |
1889 | gdb_assert (f->end != -1); | |
1890 | if (f->type->kind == TDESC_TYPE_BOOL) | |
1891 | { | |
1892 | gdb_assert (f->start == f->end); | |
1893 | printf_unfiltered | |
1894 | (" tdesc_add_flag (type, %d, \"%s\");\n", | |
1895 | f->start, f->name); | |
1896 | } | |
1897 | else if ((type->u.u.size == 4 | |
1898 | && f->type->kind == TDESC_TYPE_UINT32) | |
1899 | || (type->u.u.size == 8 | |
1900 | && f->type->kind == TDESC_TYPE_UINT64)) | |
1901 | { | |
1902 | printf_unfiltered | |
1903 | (" tdesc_add_bitfield (type, \"%s\", %d, %d);\n", | |
1904 | f->name, f->start, f->end); | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | printf_unfiltered | |
1909 | (" field_type = tdesc_named_type (feature," | |
1910 | " \"%s\");\n", | |
1911 | type_name); | |
1912 | printf_unfiltered | |
1913 | (" tdesc_add_typed_bitfield (type, \"%s\"," | |
1914 | " %d, %d, field_type);\n", | |
1915 | f->name, f->start, f->end); | |
1916 | } | |
1917 | } | |
1918 | else /* Not a bitfield. */ | |
f92b06da | 1919 | { |
81516450 DE |
1920 | gdb_assert (f->end == -1); |
1921 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
f92b06da | 1922 | printf_unfiltered |
81516450 DE |
1923 | (" field_type = tdesc_named_type (feature," |
1924 | " \"%s\");\n", | |
1925 | type_name); | |
f92b06da WT |
1926 | printf_unfiltered |
1927 | (" tdesc_add_field (type, \"%s\", field_type);\n", | |
1928 | f->name); | |
1929 | } | |
f92b06da WT |
1930 | } |
1931 | break; | |
ad068eab | 1932 | case TDESC_TYPE_UNION: |
81adfced | 1933 | printf_unfiltered |
ad068eab UW |
1934 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1935 | type->name); | |
1936 | for (ix3 = 0; | |
1937 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1938 | ix3++) | |
81adfced DJ |
1939 | { |
1940 | printf_unfiltered | |
1941 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1942 | f->type->name); |
81adfced | 1943 | printf_unfiltered |
ad068eab UW |
1944 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1945 | f->name); | |
81adfced | 1946 | } |
81adfced | 1947 | break; |
81516450 | 1948 | case TDESC_TYPE_ENUM: |
a6f5ef51 | 1949 | printf_unfiltered |
81516450 DE |
1950 | (" type = tdesc_create_enum (feature, \"%s\", %d);\n", |
1951 | type->name, type->u.u.size); | |
a6f5ef51 | 1952 | for (ix3 = 0; |
81516450 | 1953 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); |
a6f5ef51 L |
1954 | ix3++) |
1955 | printf_unfiltered | |
81516450 DE |
1956 | (" tdesc_add_enum_value (type, %d, \"%s\");\n", |
1957 | f->start, f->name); | |
a6f5ef51 | 1958 | break; |
81adfced | 1959 | default: |
ad068eab | 1960 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1961 | } |
81adfced DJ |
1962 | printf_unfiltered ("\n"); |
1963 | } | |
1964 | ||
1965 | for (ix2 = 0; | |
1966 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1967 | ix2++) | |
1968 | { | |
1969 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1970 | reg->name, reg->target_regnum, reg->save_restore); | |
1971 | if (reg->group) | |
1972 | printf_unfiltered ("\"%s\", ", reg->group); | |
1973 | else | |
1974 | printf_unfiltered ("NULL, "); | |
1975 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1976 | } | |
1977 | ||
1978 | printf_unfiltered ("\n"); | |
1979 | } | |
1980 | ||
1981 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
1982 | printf_unfiltered ("}\n"); | |
1983 | } | |
1984 | ||
2c0b251b PA |
1985 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1986 | extern initialize_file_ftype _initialize_target_descriptions; | |
1987 | ||
23181151 DJ |
1988 | void |
1989 | _initialize_target_descriptions (void) | |
1990 | { | |
123dc839 DJ |
1991 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1992 | ||
23181151 DJ |
1993 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1994 | Set target description specific variables."), | |
1995 | &tdesc_set_cmdlist, "set tdesc ", | |
1996 | 0 /* allow-unknown */, &setlist); | |
1997 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1998 | Show target description specific variables."), | |
1999 | &tdesc_show_cmdlist, "show tdesc ", | |
2000 | 0 /* allow-unknown */, &showlist); | |
2001 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2002 | Unset target description specific variables."), | |
2003 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2004 | 0 /* allow-unknown */, &unsetlist); | |
2005 | ||
2006 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2007 | &tdesc_filename_cmd_string, |
23181151 DJ |
2008 | _("\ |
2009 | Set the file to read for an XML target description"), _("\ | |
2010 | Show the file to read for an XML target description"), _("\ | |
2011 | When set, GDB will read the target description from a local\n\ | |
2012 | file instead of querying the remote target."), | |
2013 | set_tdesc_filename_cmd, | |
2014 | show_tdesc_filename_cmd, | |
2015 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2016 | ||
2017 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2018 | Unset the file to read for an XML target description. When unset,\n\ | |
2019 | GDB will read the description from the target."), | |
2020 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2021 | |
2022 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2023 | Print the current target description as a C source file."), | |
2024 | &maintenanceprintlist); | |
23181151 | 2025 | } |