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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
4c38e0a4 | 3 | Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea DJ |
33 | |
34 | #include "gdb_assert.h" | |
123dc839 DJ |
35 | #include "gdb_obstack.h" |
36 | #include "hashtab.h" | |
424163ea DJ |
37 | |
38 | /* Types. */ | |
39 | ||
29709017 DJ |
40 | typedef struct property |
41 | { | |
23181151 DJ |
42 | char *key; |
43 | char *value; | |
29709017 DJ |
44 | } property_s; |
45 | DEF_VEC_O(property_s); | |
46 | ||
123dc839 DJ |
47 | /* An individual register from a target description. */ |
48 | ||
49 | typedef struct tdesc_reg | |
50 | { | |
51 | /* The name of this register. In standard features, it may be | |
52 | recognized by the architecture support code, or it may be purely | |
53 | for the user. */ | |
54 | char *name; | |
55 | ||
56 | /* The register number used by this target to refer to this | |
57 | register. This is used for remote p/P packets and to determine | |
58 | the ordering of registers in the remote g/G packets. */ | |
59 | long target_regnum; | |
60 | ||
61 | /* If this flag is set, GDB should save and restore this register | |
62 | around calls to an inferior function. */ | |
63 | int save_restore; | |
64 | ||
65 | /* The name of the register group containing this register, or NULL | |
66 | if the group should be automatically determined from the | |
67 | register's type. If this is "general", "float", or "vector", the | |
68 | corresponding "info" command should display this register's | |
69 | value. It can be an arbitrary string, but should be limited to | |
70 | alphanumeric characters and internal hyphens. Currently other | |
71 | strings are ignored (treated as NULL). */ | |
72 | char *group; | |
73 | ||
74 | /* The size of the register, in bits. */ | |
75 | int bitsize; | |
76 | ||
77 | /* The type of the register. This string corresponds to either | |
78 | a named type from the target description or a predefined | |
79 | type from GDB. */ | |
80 | char *type; | |
81 | ||
82 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 83 | struct tdesc_type *tdesc_type; |
123dc839 DJ |
84 | } *tdesc_reg_p; |
85 | DEF_VEC_P(tdesc_reg_p); | |
86 | ||
87 | /* A named type from a target description. */ | |
ad068eab UW |
88 | |
89 | typedef struct tdesc_type_field | |
90 | { | |
91 | char *name; | |
92 | struct tdesc_type *type; | |
93 | } tdesc_type_field; | |
94 | DEF_VEC_O(tdesc_type_field); | |
95 | ||
96 | typedef struct tdesc_type | |
97 | { | |
98 | /* The name of this type. */ | |
99 | char *name; | |
100 | ||
101 | /* Identify the kind of this type. */ | |
102 | enum | |
103 | { | |
104 | /* Predefined types. */ | |
105 | TDESC_TYPE_INT8, | |
106 | TDESC_TYPE_INT16, | |
107 | TDESC_TYPE_INT32, | |
108 | TDESC_TYPE_INT64, | |
109 | TDESC_TYPE_INT128, | |
110 | TDESC_TYPE_UINT8, | |
111 | TDESC_TYPE_UINT16, | |
112 | TDESC_TYPE_UINT32, | |
113 | TDESC_TYPE_UINT64, | |
114 | TDESC_TYPE_UINT128, | |
115 | TDESC_TYPE_CODE_PTR, | |
116 | TDESC_TYPE_DATA_PTR, | |
117 | TDESC_TYPE_IEEE_SINGLE, | |
118 | TDESC_TYPE_IEEE_DOUBLE, | |
119 | TDESC_TYPE_ARM_FPA_EXT, | |
9fd3625f L |
120 | TDESC_TYPE_I387_EXT, |
121 | TDESC_TYPE_I386_EFLAGS, | |
122 | TDESC_TYPE_I386_MXCSR, | |
ad068eab UW |
123 | |
124 | /* Types defined by a target feature. */ | |
125 | TDESC_TYPE_VECTOR, | |
126 | TDESC_TYPE_UNION | |
127 | } kind; | |
128 | ||
129 | /* Kind-specific data. */ | |
130 | union | |
131 | { | |
132 | /* Vector type. */ | |
133 | struct | |
134 | { | |
135 | struct tdesc_type *type; | |
136 | int count; | |
137 | } v; | |
138 | ||
139 | /* Union type. */ | |
140 | struct | |
141 | { | |
142 | VEC(tdesc_type_field) *fields; | |
143 | } u; | |
144 | } u; | |
145 | } *tdesc_type_p; | |
146 | DEF_VEC_P(tdesc_type_p); | |
123dc839 DJ |
147 | |
148 | /* A feature from a target description. Each feature is a collection | |
149 | of other elements, e.g. registers and types. */ | |
150 | ||
151 | typedef struct tdesc_feature | |
152 | { | |
153 | /* The name of this feature. It may be recognized by the architecture | |
154 | support code. */ | |
155 | char *name; | |
156 | ||
157 | /* The registers associated with this feature. */ | |
158 | VEC(tdesc_reg_p) *registers; | |
159 | ||
160 | /* The types associated with this feature. */ | |
ad068eab | 161 | VEC(tdesc_type_p) *types; |
123dc839 DJ |
162 | } *tdesc_feature_p; |
163 | DEF_VEC_P(tdesc_feature_p); | |
164 | ||
e35359c5 UW |
165 | /* A compatible architecture from a target description. */ |
166 | typedef const struct bfd_arch_info *arch_p; | |
167 | DEF_VEC_P(arch_p); | |
168 | ||
123dc839 DJ |
169 | /* A target description. */ |
170 | ||
424163ea DJ |
171 | struct target_desc |
172 | { | |
23181151 DJ |
173 | /* The architecture reported by the target, if any. */ |
174 | const struct bfd_arch_info *arch; | |
175 | ||
08d16641 PA |
176 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
177 | otherwise. */ | |
178 | enum gdb_osabi osabi; | |
179 | ||
e35359c5 UW |
180 | /* The list of compatible architectures reported by the target. */ |
181 | VEC(arch_p) *compatible; | |
182 | ||
29709017 DJ |
183 | /* Any architecture-specific properties specified by the target. */ |
184 | VEC(property_s) *properties; | |
123dc839 DJ |
185 | |
186 | /* The features associated with this target. */ | |
187 | VEC(tdesc_feature_p) *features; | |
188 | }; | |
189 | ||
190 | /* Per-architecture data associated with a target description. The | |
191 | target description may be shared by multiple architectures, but | |
192 | this data is private to one gdbarch. */ | |
193 | ||
ad068eab UW |
194 | typedef struct tdesc_arch_reg |
195 | { | |
196 | struct tdesc_reg *reg; | |
197 | struct type *type; | |
198 | } tdesc_arch_reg; | |
199 | DEF_VEC_O(tdesc_arch_reg); | |
200 | ||
123dc839 DJ |
201 | struct tdesc_arch_data |
202 | { | |
ad068eab | 203 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
204 | During initialization of the gdbarch this list is used to store |
205 | registers which the architecture assigns a fixed register number. | |
206 | Registers which are NULL in this array, or off the end, are | |
207 | treated as zero-sized and nameless (i.e. placeholders in the | |
208 | numbering). */ | |
ad068eab | 209 | VEC(tdesc_arch_reg) *arch_regs; |
123dc839 DJ |
210 | |
211 | /* Functions which report the register name, type, and reggroups for | |
212 | pseudo-registers. */ | |
213 | gdbarch_register_name_ftype *pseudo_register_name; | |
214 | gdbarch_register_type_ftype *pseudo_register_type; | |
215 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p; | |
424163ea DJ |
216 | }; |
217 | ||
218 | /* Global state. These variables are associated with the current | |
219 | target; if GDB adds support for multiple simultaneous targets, then | |
220 | these variables should become target-specific data. */ | |
221 | ||
222 | /* A flag indicating that a description has already been fetched from | |
223 | the current target, so it should not be queried again. */ | |
224 | ||
225 | static int target_desc_fetched; | |
226 | ||
227 | /* The description fetched from the current target, or NULL if the | |
228 | current target did not supply any description. Only valid when | |
229 | target_desc_fetched is set. Only the description initialization | |
230 | code should access this; normally, the description should be | |
231 | accessed through the gdbarch object. */ | |
232 | ||
233 | static const struct target_desc *current_target_desc; | |
234 | ||
23181151 DJ |
235 | /* Other global variables. */ |
236 | ||
237 | /* The filename to read a target description from. */ | |
238 | ||
239 | static char *target_description_filename; | |
240 | ||
123dc839 DJ |
241 | /* A handle for architecture-specific data associated with the |
242 | target description (see struct tdesc_arch_data). */ | |
243 | ||
244 | static struct gdbarch_data *tdesc_data; | |
245 | ||
424163ea DJ |
246 | /* Fetch the current target's description, and switch the current |
247 | architecture to one which incorporates that description. */ | |
248 | ||
249 | void | |
250 | target_find_description (void) | |
251 | { | |
252 | /* If we've already fetched a description from the target, don't do | |
253 | it again. This allows a target to fetch the description early, | |
254 | during its to_open or to_create_inferior, if it needs extra | |
255 | information about the target to initialize. */ | |
256 | if (target_desc_fetched) | |
257 | return; | |
258 | ||
259 | /* The current architecture should not have any target description | |
260 | specified. It should have been cleared, e.g. when we | |
261 | disconnected from the previous target. */ | |
1cf3db46 | 262 | gdb_assert (gdbarch_target_desc (target_gdbarch) == NULL); |
424163ea | 263 | |
23181151 DJ |
264 | /* First try to fetch an XML description from the user-specified |
265 | file. */ | |
266 | current_target_desc = NULL; | |
267 | if (target_description_filename != NULL | |
268 | && *target_description_filename != '\0') | |
269 | current_target_desc | |
270 | = file_read_description_xml (target_description_filename); | |
271 | ||
272 | /* Next try to read the description from the current target using | |
273 | target objects. */ | |
274 | if (current_target_desc == NULL) | |
275 | current_target_desc = target_read_description_xml (¤t_target); | |
276 | ||
277 | /* If that failed try a target-specific hook. */ | |
278 | if (current_target_desc == NULL) | |
279 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
280 | |
281 | /* If a non-NULL description was returned, then update the current | |
282 | architecture. */ | |
283 | if (current_target_desc) | |
284 | { | |
285 | struct gdbarch_info info; | |
286 | ||
287 | gdbarch_info_init (&info); | |
288 | info.target_desc = current_target_desc; | |
289 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
290 | warning (_("Architecture rejected target-supplied description")); |
291 | else | |
292 | { | |
293 | struct tdesc_arch_data *data; | |
294 | ||
1cf3db46 | 295 | data = gdbarch_data (target_gdbarch, tdesc_data); |
123dc839 | 296 | if (tdesc_has_registers (current_target_desc) |
ad068eab | 297 | && data->arch_regs == NULL) |
123dc839 DJ |
298 | warning (_("Target-supplied registers are not supported " |
299 | "by the current architecture")); | |
300 | } | |
424163ea DJ |
301 | } |
302 | ||
303 | /* Now that we know this description is usable, record that we | |
304 | fetched it. */ | |
305 | target_desc_fetched = 1; | |
306 | } | |
307 | ||
308 | /* Discard any description fetched from the current target, and switch | |
309 | the current architecture to one with no target description. */ | |
310 | ||
311 | void | |
312 | target_clear_description (void) | |
313 | { | |
314 | struct gdbarch_info info; | |
315 | ||
316 | if (!target_desc_fetched) | |
317 | return; | |
318 | ||
319 | target_desc_fetched = 0; | |
320 | current_target_desc = NULL; | |
321 | ||
322 | gdbarch_info_init (&info); | |
323 | if (!gdbarch_update_p (info)) | |
324 | internal_error (__FILE__, __LINE__, | |
325 | _("Could not remove target-supplied description")); | |
326 | } | |
327 | ||
328 | /* Return the global current target description. This should only be | |
329 | used by gdbarch initialization code; most access should be through | |
330 | an existing gdbarch. */ | |
331 | ||
332 | const struct target_desc * | |
333 | target_current_description (void) | |
334 | { | |
335 | if (target_desc_fetched) | |
336 | return current_target_desc; | |
337 | ||
338 | return NULL; | |
339 | } | |
e35359c5 UW |
340 | |
341 | /* Return non-zero if this target description is compatible | |
342 | with the given BFD architecture. */ | |
343 | ||
344 | int | |
345 | tdesc_compatible_p (const struct target_desc *target_desc, | |
346 | const struct bfd_arch_info *arch) | |
347 | { | |
348 | const struct bfd_arch_info *compat; | |
349 | int ix; | |
350 | ||
351 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
352 | ix++) | |
353 | { | |
354 | if (compat == arch | |
355 | || arch->compatible (arch, compat) | |
356 | || compat->compatible (compat, arch)) | |
357 | return 1; | |
358 | } | |
359 | ||
360 | return 0; | |
361 | } | |
23181151 DJ |
362 | \f |
363 | ||
123dc839 | 364 | /* Direct accessors for target descriptions. */ |
424163ea | 365 | |
29709017 DJ |
366 | /* Return the string value of a property named KEY, or NULL if the |
367 | property was not specified. */ | |
368 | ||
369 | const char * | |
370 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
371 | { | |
372 | struct property *prop; | |
373 | int ix; | |
374 | ||
375 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
376 | ix++) | |
377 | if (strcmp (prop->key, key) == 0) | |
378 | return prop->value; | |
379 | ||
380 | return NULL; | |
381 | } | |
382 | ||
23181151 DJ |
383 | /* Return the BFD architecture associated with this target |
384 | description, or NULL if no architecture was specified. */ | |
385 | ||
386 | const struct bfd_arch_info * | |
387 | tdesc_architecture (const struct target_desc *target_desc) | |
388 | { | |
389 | return target_desc->arch; | |
390 | } | |
08d16641 PA |
391 | |
392 | /* Return the OSABI associated with this target description, or | |
393 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
394 | ||
395 | enum gdb_osabi | |
396 | tdesc_osabi (const struct target_desc *target_desc) | |
397 | { | |
398 | return target_desc->osabi; | |
399 | } | |
400 | ||
23181151 DJ |
401 | \f |
402 | ||
123dc839 DJ |
403 | /* Return 1 if this target description includes any registers. */ |
404 | ||
405 | int | |
406 | tdesc_has_registers (const struct target_desc *target_desc) | |
407 | { | |
408 | int ix; | |
409 | struct tdesc_feature *feature; | |
410 | ||
411 | if (target_desc == NULL) | |
412 | return 0; | |
413 | ||
414 | for (ix = 0; | |
415 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
416 | ix++) | |
417 | if (! VEC_empty (tdesc_reg_p, feature->registers)) | |
418 | return 1; | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | /* Return the feature with the given name, if present, or NULL if | |
424 | the named feature is not found. */ | |
425 | ||
426 | const struct tdesc_feature * | |
427 | tdesc_find_feature (const struct target_desc *target_desc, | |
428 | const char *name) | |
429 | { | |
430 | int ix; | |
431 | struct tdesc_feature *feature; | |
432 | ||
433 | for (ix = 0; | |
434 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
435 | ix++) | |
436 | if (strcmp (feature->name, name) == 0) | |
437 | return feature; | |
438 | ||
439 | return NULL; | |
440 | } | |
441 | ||
442 | /* Return the name of FEATURE. */ | |
443 | ||
444 | const char * | |
445 | tdesc_feature_name (const struct tdesc_feature *feature) | |
446 | { | |
447 | return feature->name; | |
448 | } | |
449 | ||
ad068eab UW |
450 | /* Predefined types. */ |
451 | static struct tdesc_type tdesc_predefined_types[] = | |
81adfced | 452 | { |
ad068eab UW |
453 | { "int8", TDESC_TYPE_INT8 }, |
454 | { "int16", TDESC_TYPE_INT16 }, | |
455 | { "int32", TDESC_TYPE_INT32 }, | |
456 | { "int64", TDESC_TYPE_INT64 }, | |
457 | { "int128", TDESC_TYPE_INT128 }, | |
458 | { "uint8", TDESC_TYPE_UINT8 }, | |
459 | { "uint16", TDESC_TYPE_UINT16 }, | |
460 | { "uint32", TDESC_TYPE_UINT32 }, | |
461 | { "uint64", TDESC_TYPE_UINT64 }, | |
462 | { "uint128", TDESC_TYPE_UINT128 }, | |
463 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
464 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
465 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
466 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f L |
467 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
468 | { "i387_ext", TDESC_TYPE_I387_EXT }, | |
469 | { "i386_eflags", TDESC_TYPE_I386_EFLAGS }, | |
470 | { "i386_mxcsr", TDESC_TYPE_I386_MXCSR } | |
ad068eab | 471 | }; |
81adfced | 472 | |
123dc839 DJ |
473 | /* Return the type associated with ID in the context of FEATURE, or |
474 | NULL if none. */ | |
475 | ||
ad068eab | 476 | struct tdesc_type * |
123dc839 DJ |
477 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
478 | { | |
479 | int ix; | |
ad068eab | 480 | struct tdesc_type *type; |
123dc839 DJ |
481 | |
482 | /* First try target-defined types. */ | |
ad068eab UW |
483 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
484 | if (strcmp (type->name, id) == 0) | |
485 | return type; | |
123dc839 | 486 | |
81adfced DJ |
487 | /* Next try the predefined types. */ |
488 | for (ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
489 | if (strcmp (tdesc_predefined_types[ix].name, id) == 0) | |
ad068eab | 490 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
491 | |
492 | return NULL; | |
493 | } | |
ad068eab | 494 | |
9fd3625f L |
495 | /* Lookup type associated with ID. */ |
496 | ||
497 | struct type * | |
498 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
499 | { | |
500 | struct tdesc_arch_reg *reg; | |
501 | struct tdesc_arch_data *data; | |
502 | int i, num_regs; | |
503 | ||
504 | data = gdbarch_data (gdbarch, tdesc_data); | |
505 | num_regs = VEC_length (tdesc_arch_reg, data->arch_regs); | |
506 | for (i = 0; i < num_regs; i++) | |
507 | { | |
508 | reg = VEC_index (tdesc_arch_reg, data->arch_regs, i); | |
509 | if (reg->reg | |
510 | && reg->reg->tdesc_type | |
511 | && reg->type | |
512 | && strcmp (id, reg->reg->tdesc_type->name) == 0) | |
513 | return reg->type; | |
514 | } | |
515 | ||
516 | return NULL; | |
517 | } | |
518 | ||
ad068eab UW |
519 | /* Construct, if necessary, and return the GDB type implementing target |
520 | type TDESC_TYPE for architecture GDBARCH. */ | |
521 | ||
522 | static struct type * | |
523 | tdesc_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *tdesc_type) | |
524 | { | |
9fd3625f L |
525 | struct type *type; |
526 | ||
ad068eab UW |
527 | switch (tdesc_type->kind) |
528 | { | |
529 | /* Predefined types. */ | |
530 | case TDESC_TYPE_INT8: | |
df4df182 | 531 | return builtin_type (gdbarch)->builtin_int8; |
ad068eab UW |
532 | |
533 | case TDESC_TYPE_INT16: | |
df4df182 | 534 | return builtin_type (gdbarch)->builtin_int16; |
ad068eab UW |
535 | |
536 | case TDESC_TYPE_INT32: | |
df4df182 | 537 | return builtin_type (gdbarch)->builtin_int32; |
ad068eab UW |
538 | |
539 | case TDESC_TYPE_INT64: | |
df4df182 | 540 | return builtin_type (gdbarch)->builtin_int64; |
ad068eab UW |
541 | |
542 | case TDESC_TYPE_INT128: | |
df4df182 | 543 | return builtin_type (gdbarch)->builtin_int128; |
ad068eab UW |
544 | |
545 | case TDESC_TYPE_UINT8: | |
df4df182 | 546 | return builtin_type (gdbarch)->builtin_uint8; |
ad068eab UW |
547 | |
548 | case TDESC_TYPE_UINT16: | |
df4df182 | 549 | return builtin_type (gdbarch)->builtin_uint16; |
ad068eab UW |
550 | |
551 | case TDESC_TYPE_UINT32: | |
df4df182 | 552 | return builtin_type (gdbarch)->builtin_uint32; |
ad068eab UW |
553 | |
554 | case TDESC_TYPE_UINT64: | |
df4df182 | 555 | return builtin_type (gdbarch)->builtin_uint64; |
ad068eab UW |
556 | |
557 | case TDESC_TYPE_UINT128: | |
df4df182 | 558 | return builtin_type (gdbarch)->builtin_uint128; |
ad068eab UW |
559 | |
560 | case TDESC_TYPE_CODE_PTR: | |
561 | return builtin_type (gdbarch)->builtin_func_ptr; | |
562 | ||
563 | case TDESC_TYPE_DATA_PTR: | |
564 | return builtin_type (gdbarch)->builtin_data_ptr; | |
565 | ||
9fd3625f L |
566 | default: |
567 | break; | |
568 | } | |
569 | ||
570 | type = tdesc_find_type (gdbarch, tdesc_type->name); | |
571 | if (type) | |
572 | return type; | |
573 | ||
574 | switch (tdesc_type->kind) | |
575 | { | |
ad068eab | 576 | case TDESC_TYPE_IEEE_SINGLE: |
e9bb382b | 577 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", |
27067745 | 578 | floatformats_ieee_single); |
ad068eab UW |
579 | |
580 | case TDESC_TYPE_IEEE_DOUBLE: | |
e9bb382b | 581 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", |
27067745 | 582 | floatformats_ieee_double); |
ad068eab UW |
583 | |
584 | case TDESC_TYPE_ARM_FPA_EXT: | |
e9bb382b | 585 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", |
27067745 | 586 | floatformats_arm_ext); |
ad068eab | 587 | |
9fd3625f L |
588 | case TDESC_TYPE_I387_EXT: |
589 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
590 | floatformats_i387_ext); | |
591 | ||
592 | case TDESC_TYPE_I386_EFLAGS: | |
593 | { | |
594 | struct type *type; | |
595 | ||
596 | type = arch_flags_type (gdbarch, "builtin_type_i386_eflags", 4); | |
597 | append_flags_type_flag (type, 0, "CF"); | |
598 | append_flags_type_flag (type, 1, NULL); | |
599 | append_flags_type_flag (type, 2, "PF"); | |
600 | append_flags_type_flag (type, 4, "AF"); | |
601 | append_flags_type_flag (type, 6, "ZF"); | |
602 | append_flags_type_flag (type, 7, "SF"); | |
603 | append_flags_type_flag (type, 8, "TF"); | |
604 | append_flags_type_flag (type, 9, "IF"); | |
605 | append_flags_type_flag (type, 10, "DF"); | |
606 | append_flags_type_flag (type, 11, "OF"); | |
607 | append_flags_type_flag (type, 14, "NT"); | |
608 | append_flags_type_flag (type, 16, "RF"); | |
609 | append_flags_type_flag (type, 17, "VM"); | |
610 | append_flags_type_flag (type, 18, "AC"); | |
611 | append_flags_type_flag (type, 19, "VIF"); | |
612 | append_flags_type_flag (type, 20, "VIP"); | |
613 | append_flags_type_flag (type, 21, "ID"); | |
614 | ||
615 | return type; | |
616 | } | |
617 | break; | |
618 | ||
619 | case TDESC_TYPE_I386_MXCSR: | |
620 | { | |
621 | struct type *type; | |
622 | ||
623 | type = arch_flags_type (gdbarch, "builtin_type_i386_mxcsr", 4); | |
624 | append_flags_type_flag (type, 0, "IE"); | |
625 | append_flags_type_flag (type, 1, "DE"); | |
626 | append_flags_type_flag (type, 2, "ZE"); | |
627 | append_flags_type_flag (type, 3, "OE"); | |
628 | append_flags_type_flag (type, 4, "UE"); | |
629 | append_flags_type_flag (type, 5, "PE"); | |
630 | append_flags_type_flag (type, 6, "DAZ"); | |
631 | append_flags_type_flag (type, 7, "IM"); | |
632 | append_flags_type_flag (type, 8, "DM"); | |
633 | append_flags_type_flag (type, 9, "ZM"); | |
634 | append_flags_type_flag (type, 10, "OM"); | |
635 | append_flags_type_flag (type, 11, "UM"); | |
636 | append_flags_type_flag (type, 12, "PM"); | |
637 | append_flags_type_flag (type, 15, "FZ"); | |
638 | ||
639 | return type; | |
640 | } | |
641 | break; | |
642 | ||
ad068eab UW |
643 | /* Types defined by a target feature. */ |
644 | case TDESC_TYPE_VECTOR: | |
645 | { | |
646 | struct type *type, *field_type; | |
647 | ||
648 | field_type = tdesc_gdb_type (gdbarch, tdesc_type->u.v.type); | |
649 | type = init_vector_type (field_type, tdesc_type->u.v.count); | |
650 | TYPE_NAME (type) = xstrdup (tdesc_type->name); | |
651 | ||
652 | return type; | |
653 | } | |
654 | ||
655 | case TDESC_TYPE_UNION: | |
656 | { | |
657 | struct type *type, *field_type; | |
658 | struct tdesc_type_field *f; | |
659 | int ix; | |
660 | ||
e9bb382b | 661 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
ad068eab UW |
662 | TYPE_NAME (type) = xstrdup (tdesc_type->name); |
663 | ||
664 | for (ix = 0; | |
665 | VEC_iterate (tdesc_type_field, tdesc_type->u.u.fields, ix, f); | |
666 | ix++) | |
667 | { | |
668 | field_type = tdesc_gdb_type (gdbarch, f->type); | |
669 | append_composite_type_field (type, xstrdup (f->name), field_type); | |
670 | ||
671 | /* If any of the children of this union are vectors, flag the | |
672 | union as a vector also. This allows e.g. a union of two | |
673 | vector types to show up automatically in "info vector". */ | |
674 | if (TYPE_VECTOR (field_type)) | |
675 | TYPE_VECTOR (type) = 1; | |
676 | } | |
677 | ||
678 | return type; | |
679 | } | |
680 | } | |
681 | ||
682 | internal_error (__FILE__, __LINE__, | |
683 | "Type \"%s\" has an unknown kind %d", | |
684 | tdesc_type->name, tdesc_type->kind); | |
685 | } | |
123dc839 DJ |
686 | \f |
687 | ||
688 | /* Support for registers from target descriptions. */ | |
689 | ||
690 | /* Construct the per-gdbarch data. */ | |
691 | ||
692 | static void * | |
693 | tdesc_data_init (struct obstack *obstack) | |
694 | { | |
695 | struct tdesc_arch_data *data; | |
696 | ||
697 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
698 | return data; | |
699 | } | |
700 | ||
701 | /* Similar, but for the temporary copy used during architecture | |
702 | initialization. */ | |
703 | ||
704 | struct tdesc_arch_data * | |
705 | tdesc_data_alloc (void) | |
706 | { | |
707 | return XZALLOC (struct tdesc_arch_data); | |
708 | } | |
709 | ||
710 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
711 | to be used (for instance if it was unsuitable for the | |
712 | architecture). */ | |
713 | ||
714 | void | |
715 | tdesc_data_cleanup (void *data_untyped) | |
716 | { | |
717 | struct tdesc_arch_data *data = data_untyped; | |
718 | ||
ad068eab | 719 | VEC_free (tdesc_arch_reg, data->arch_regs); |
123dc839 DJ |
720 | xfree (data); |
721 | } | |
722 | ||
723 | /* Search FEATURE for a register named NAME. */ | |
724 | ||
7cc46491 DJ |
725 | static struct tdesc_reg * |
726 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
727 | const char *name) | |
123dc839 DJ |
728 | { |
729 | int ixr; | |
730 | struct tdesc_reg *reg; | |
731 | ||
732 | for (ixr = 0; | |
733 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
734 | ixr++) | |
735 | if (strcasecmp (reg->name, name) == 0) | |
7cc46491 | 736 | return reg; |
123dc839 | 737 | |
7cc46491 DJ |
738 | return NULL; |
739 | } | |
740 | ||
741 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
742 | ||
743 | int | |
744 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
745 | struct tdesc_arch_data *data, | |
746 | int regno, const char *name) | |
747 | { | |
ad068eab | 748 | struct tdesc_arch_reg arch_reg = { 0 }; |
7cc46491 DJ |
749 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); |
750 | ||
751 | if (reg == NULL) | |
752 | return 0; | |
753 | ||
754 | /* Make sure the vector includes a REGNO'th element. */ | |
ad068eab UW |
755 | while (regno >= VEC_length (tdesc_arch_reg, data->arch_regs)) |
756 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &arch_reg); | |
757 | ||
758 | arch_reg.reg = reg; | |
759 | VEC_replace (tdesc_arch_reg, data->arch_regs, regno, &arch_reg); | |
7cc46491 | 760 | return 1; |
123dc839 DJ |
761 | } |
762 | ||
58d6951d DJ |
763 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
764 | register number to it. */ | |
765 | ||
766 | int | |
767 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
768 | const char *name) | |
769 | { | |
770 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
771 | ||
772 | if (reg == NULL) | |
773 | return 0; | |
774 | ||
775 | return 1; | |
776 | } | |
777 | ||
7cc46491 DJ |
778 | /* Search FEATURE for a register whose name is in NAMES and assign |
779 | REGNO to it. */ | |
123dc839 DJ |
780 | |
781 | int | |
782 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
783 | struct tdesc_arch_data *data, | |
784 | int regno, const char *const names[]) | |
785 | { | |
786 | int i; | |
787 | ||
788 | for (i = 0; names[i] != NULL; i++) | |
789 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
790 | return 1; | |
791 | ||
792 | return 0; | |
793 | } | |
794 | ||
7cc46491 DJ |
795 | /* Search FEATURE for a register named NAME, and return its size in |
796 | bits. The register must exist. */ | |
797 | ||
798 | int | |
799 | tdesc_register_size (const struct tdesc_feature *feature, | |
800 | const char *name) | |
801 | { | |
802 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
803 | ||
804 | gdb_assert (reg != NULL); | |
805 | return reg->bitsize; | |
806 | } | |
807 | ||
123dc839 DJ |
808 | /* Look up a register by its GDB internal register number. */ |
809 | ||
ad068eab UW |
810 | static struct tdesc_arch_reg * |
811 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 812 | { |
ad068eab | 813 | struct tdesc_arch_reg *reg; |
123dc839 DJ |
814 | struct tdesc_arch_data *data; |
815 | ||
816 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab UW |
817 | if (regno < VEC_length (tdesc_arch_reg, data->arch_regs)) |
818 | return VEC_index (tdesc_arch_reg, data->arch_regs, regno); | |
123dc839 DJ |
819 | else |
820 | return NULL; | |
821 | } | |
822 | ||
ad068eab UW |
823 | static struct tdesc_reg * |
824 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
825 | { | |
826 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
827 | return reg? reg->reg : NULL; | |
828 | } | |
829 | ||
f8b73d13 DJ |
830 | /* Return the name of register REGNO, from the target description or |
831 | from an architecture-provided pseudo_register_name method. */ | |
832 | ||
833 | const char * | |
d93859e2 | 834 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 835 | { |
d93859e2 UW |
836 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
837 | int num_regs = gdbarch_num_regs (gdbarch); | |
838 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
839 | |
840 | if (reg != NULL) | |
841 | return reg->name; | |
842 | ||
843 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
844 | { | |
d93859e2 | 845 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); |
123dc839 | 846 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 847 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
848 | } |
849 | ||
850 | return ""; | |
851 | } | |
852 | ||
58d6951d | 853 | struct type * |
123dc839 DJ |
854 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
855 | { | |
ad068eab UW |
856 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
857 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
858 | int num_regs = gdbarch_num_regs (gdbarch); |
859 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
860 | ||
861 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
862 | { | |
863 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
864 | gdb_assert (data->pseudo_register_type != NULL); | |
865 | return data->pseudo_register_type (gdbarch, regno); | |
866 | } | |
867 | ||
868 | if (reg == NULL) | |
869 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 870 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 871 | |
ad068eab | 872 | if (arch_reg->type == NULL) |
123dc839 | 873 | { |
ad068eab UW |
874 | /* First check for a predefined or target defined type. */ |
875 | if (reg->tdesc_type) | |
876 | arch_reg->type = tdesc_gdb_type (gdbarch, reg->tdesc_type); | |
877 | ||
878 | /* Next try size-sensitive type shortcuts. */ | |
879 | else if (strcmp (reg->type, "float") == 0) | |
880 | { | |
881 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
882 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
883 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
884 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
885 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
886 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
887 | else | |
888 | { | |
889 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
890 | reg->name, reg->bitsize); | |
891 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
892 | } | |
893 | } | |
894 | else if (strcmp (reg->type, "int") == 0) | |
895 | { | |
896 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
897 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
898 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
899 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
900 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
901 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
902 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
903 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
904 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
905 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
906 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
907 | /* A bit desperate by this point... */ | |
908 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; | |
909 | else | |
910 | { | |
911 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
912 | reg->name, reg->bitsize); | |
913 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
914 | } | |
915 | } | |
916 | ||
917 | if (arch_reg->type == NULL) | |
918 | internal_error (__FILE__, __LINE__, | |
919 | "Register \"%s\" has an unknown type \"%s\"", | |
920 | reg->name, reg->type); | |
123dc839 | 921 | } |
123dc839 | 922 | |
ad068eab | 923 | return arch_reg->type; |
123dc839 DJ |
924 | } |
925 | ||
926 | static int | |
927 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
928 | { | |
929 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
930 | ||
931 | if (reg != NULL) | |
932 | return reg->target_regnum; | |
933 | else | |
934 | return -1; | |
935 | } | |
936 | ||
937 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
938 | target description may be classified as general, float, or vector. | |
f8b73d13 DJ |
939 | Unlike a gdbarch register_reggroup_p method, this function will |
940 | return -1 if it does not know; the caller should handle registers | |
941 | with no specified group. | |
123dc839 DJ |
942 | |
943 | Arbitrary strings (other than "general", "float", and "vector") | |
944 | from the description are not used; they cause the register to be | |
945 | displayed in "info all-registers" but excluded from "info | |
946 | registers" et al. The names of containing features are also not | |
947 | used. This might be extended to display registers in some more | |
948 | useful groupings. | |
949 | ||
950 | The save-restore flag is also implemented here. */ | |
951 | ||
f8b73d13 DJ |
952 | int |
953 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
954 | struct reggroup *reggroup) | |
123dc839 | 955 | { |
123dc839 DJ |
956 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
957 | ||
123dc839 DJ |
958 | if (reg != NULL && reg->group != NULL) |
959 | { | |
960 | int general_p = 0, float_p = 0, vector_p = 0; | |
961 | ||
962 | if (strcmp (reg->group, "general") == 0) | |
963 | general_p = 1; | |
964 | else if (strcmp (reg->group, "float") == 0) | |
965 | float_p = 1; | |
966 | else if (strcmp (reg->group, "vector") == 0) | |
967 | vector_p = 1; | |
968 | ||
969 | if (reggroup == float_reggroup) | |
970 | return float_p; | |
971 | ||
972 | if (reggroup == vector_reggroup) | |
973 | return vector_p; | |
974 | ||
975 | if (reggroup == general_reggroup) | |
976 | return general_p; | |
977 | } | |
978 | ||
979 | if (reg != NULL | |
980 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
981 | return reg->save_restore; | |
982 | ||
f8b73d13 DJ |
983 | return -1; |
984 | } | |
985 | ||
986 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
987 | group specified go to the default reggroup function and are handled | |
988 | by type. */ | |
989 | ||
990 | static int | |
991 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
992 | struct reggroup *reggroup) | |
993 | { | |
994 | int num_regs = gdbarch_num_regs (gdbarch); | |
995 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
996 | int ret; | |
997 | ||
998 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
999 | { | |
1000 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
58d6951d DJ |
1001 | if (data->pseudo_register_reggroup_p != NULL) |
1002 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1003 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1004 | } |
1005 | ||
1006 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1007 | if (ret != -1) | |
1008 | return ret; | |
1009 | ||
123dc839 DJ |
1010 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1011 | } | |
1012 | ||
1013 | /* Record architecture-specific functions to call for pseudo-register | |
1014 | support. */ | |
1015 | ||
1016 | void | |
1017 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1018 | gdbarch_register_name_ftype *pseudo_name) | |
1019 | { | |
1020 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
1021 | ||
1022 | data->pseudo_register_name = pseudo_name; | |
1023 | } | |
1024 | ||
1025 | void | |
1026 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1027 | gdbarch_register_type_ftype *pseudo_type) | |
1028 | { | |
1029 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
1030 | ||
1031 | data->pseudo_register_type = pseudo_type; | |
1032 | } | |
1033 | ||
1034 | void | |
1035 | set_tdesc_pseudo_register_reggroup_p | |
1036 | (struct gdbarch *gdbarch, | |
1037 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1038 | { | |
1039 | struct tdesc_arch_data *data = gdbarch_data (gdbarch, tdesc_data); | |
1040 | ||
1041 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1042 | } | |
1043 | ||
1044 | /* Update GDBARCH to use the target description for registers. */ | |
1045 | ||
1046 | void | |
1047 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1048 | const struct target_desc *target_desc, |
123dc839 DJ |
1049 | struct tdesc_arch_data *early_data) |
1050 | { | |
1051 | int num_regs = gdbarch_num_regs (gdbarch); | |
1052 | int i, ixf, ixr; | |
123dc839 DJ |
1053 | struct tdesc_feature *feature; |
1054 | struct tdesc_reg *reg; | |
1055 | struct tdesc_arch_data *data; | |
ad068eab | 1056 | struct tdesc_arch_reg *arch_reg, new_arch_reg = { 0 }; |
123dc839 DJ |
1057 | htab_t reg_hash; |
1058 | ||
123dc839 DJ |
1059 | /* We can't use the description for registers if it doesn't describe |
1060 | any. This function should only be called after validating | |
1061 | registers, so the caller should know that registers are | |
1062 | included. */ | |
1063 | gdb_assert (tdesc_has_registers (target_desc)); | |
1064 | ||
1065 | data = gdbarch_data (gdbarch, tdesc_data); | |
ad068eab | 1066 | data->arch_regs = early_data->arch_regs; |
123dc839 DJ |
1067 | xfree (early_data); |
1068 | ||
1069 | /* Build up a set of all registers, so that we can assign register | |
1070 | numbers where needed. The hash table expands as necessary, so | |
1071 | the initial size is arbitrary. */ | |
1072 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
1073 | for (ixf = 0; | |
1074 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1075 | ixf++) | |
1076 | for (ixr = 0; | |
1077 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1078 | ixr++) | |
1079 | { | |
1080 | void **slot = htab_find_slot (reg_hash, reg, INSERT); | |
1081 | ||
1082 | *slot = reg; | |
1083 | } | |
1084 | ||
1085 | /* Remove any registers which were assigned numbers by the | |
1086 | architecture. */ | |
ad068eab UW |
1087 | for (ixr = 0; |
1088 | VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg); | |
1089 | ixr++) | |
1090 | if (arch_reg->reg) | |
1091 | htab_remove_elt (reg_hash, arch_reg->reg); | |
123dc839 DJ |
1092 | |
1093 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1094 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1095 | Iterate over the features, not the hash table, so that the order |
1096 | matches that in the target description. */ | |
1097 | ||
ad068eab UW |
1098 | gdb_assert (VEC_length (tdesc_arch_reg, data->arch_regs) <= num_regs); |
1099 | while (VEC_length (tdesc_arch_reg, data->arch_regs) < num_regs) | |
1100 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1101 | for (ixf = 0; |
1102 | VEC_iterate (tdesc_feature_p, target_desc->features, ixf, feature); | |
1103 | ixf++) | |
1104 | for (ixr = 0; | |
1105 | VEC_iterate (tdesc_reg_p, feature->registers, ixr, reg); | |
1106 | ixr++) | |
1107 | if (htab_find (reg_hash, reg) != NULL) | |
1108 | { | |
ad068eab UW |
1109 | new_arch_reg.reg = reg; |
1110 | VEC_safe_push (tdesc_arch_reg, data->arch_regs, &new_arch_reg); | |
123dc839 DJ |
1111 | num_regs++; |
1112 | } | |
1113 | ||
1114 | htab_delete (reg_hash); | |
1115 | ||
1116 | /* Update the architecture. */ | |
1117 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1118 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1119 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1120 | set_gdbarch_remote_register_number (gdbarch, | |
1121 | tdesc_remote_register_number); | |
1122 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1123 | } | |
1124 | \f | |
1125 | ||
424163ea DJ |
1126 | /* Methods for constructing a target description. */ |
1127 | ||
123dc839 DJ |
1128 | static void |
1129 | tdesc_free_reg (struct tdesc_reg *reg) | |
1130 | { | |
1131 | xfree (reg->name); | |
1132 | xfree (reg->type); | |
1133 | xfree (reg->group); | |
1134 | xfree (reg); | |
1135 | } | |
1136 | ||
1137 | void | |
1138 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1139 | int regnum, int save_restore, const char *group, | |
1140 | int bitsize, const char *type) | |
1141 | { | |
1142 | struct tdesc_reg *reg = XZALLOC (struct tdesc_reg); | |
1143 | ||
1144 | reg->name = xstrdup (name); | |
1145 | reg->target_regnum = regnum; | |
1146 | reg->save_restore = save_restore; | |
1147 | reg->group = group ? xstrdup (group) : NULL; | |
1148 | reg->bitsize = bitsize; | |
c8c12293 | 1149 | reg->type = type ? xstrdup (type) : xstrdup ("<unknown>"); |
123dc839 DJ |
1150 | |
1151 | /* If the register's type is target-defined, look it up now. We may not | |
1152 | have easy access to the containing feature when we want it later. */ | |
ad068eab | 1153 | reg->tdesc_type = tdesc_named_type (feature, reg->type); |
123dc839 DJ |
1154 | |
1155 | VEC_safe_push (tdesc_reg_p, feature->registers, reg); | |
1156 | } | |
1157 | ||
ad068eab UW |
1158 | static void |
1159 | tdesc_free_type (struct tdesc_type *type) | |
1160 | { | |
1161 | ||
1162 | switch (type->kind) | |
1163 | { | |
1164 | case TDESC_TYPE_UNION: | |
1165 | { | |
1166 | struct tdesc_type_field *f; | |
1167 | int ix; | |
1168 | ||
1169 | for (ix = 0; | |
1170 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix, f); | |
1171 | ix++) | |
1172 | xfree (f->name); | |
1173 | ||
1174 | VEC_free (tdesc_type_field, type->u.u.fields); | |
1175 | } | |
1176 | break; | |
1177 | ||
1178 | default: | |
1179 | break; | |
1180 | } | |
1181 | ||
1182 | xfree (type->name); | |
1183 | xfree (type); | |
1184 | } | |
1185 | ||
1186 | struct tdesc_type * | |
1187 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1188 | struct tdesc_type *field_type, int count) | |
1189 | { | |
1190 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1191 | ||
1192 | type->name = xstrdup (name); | |
1193 | type->kind = TDESC_TYPE_VECTOR; | |
1194 | type->u.v.type = field_type; | |
1195 | type->u.v.count = count; | |
1196 | ||
1197 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1198 | return type; | |
1199 | } | |
1200 | ||
1201 | struct tdesc_type * | |
1202 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
1203 | { | |
1204 | struct tdesc_type *type = XZALLOC (struct tdesc_type); | |
1205 | ||
1206 | type->name = xstrdup (name); | |
1207 | type->kind = TDESC_TYPE_UNION; | |
1208 | ||
1209 | VEC_safe_push (tdesc_type_p, feature->types, type); | |
1210 | return type; | |
1211 | } | |
1212 | ||
1213 | void | |
1214 | tdesc_add_field (struct tdesc_type *type, const char *field_name, | |
1215 | struct tdesc_type *field_type) | |
1216 | { | |
1217 | struct tdesc_type_field f = { 0 }; | |
1218 | ||
1219 | gdb_assert (type->kind == TDESC_TYPE_UNION); | |
1220 | ||
1221 | f.name = xstrdup (field_name); | |
1222 | f.type = field_type; | |
1223 | ||
1224 | VEC_safe_push (tdesc_type_field, type->u.u.fields, &f); | |
1225 | } | |
1226 | ||
123dc839 DJ |
1227 | static void |
1228 | tdesc_free_feature (struct tdesc_feature *feature) | |
1229 | { | |
1230 | struct tdesc_reg *reg; | |
ad068eab | 1231 | struct tdesc_type *type; |
123dc839 DJ |
1232 | int ix; |
1233 | ||
1234 | for (ix = 0; VEC_iterate (tdesc_reg_p, feature->registers, ix, reg); ix++) | |
1235 | tdesc_free_reg (reg); | |
1236 | VEC_free (tdesc_reg_p, feature->registers); | |
1237 | ||
ad068eab UW |
1238 | for (ix = 0; VEC_iterate (tdesc_type_p, feature->types, ix, type); ix++) |
1239 | tdesc_free_type (type); | |
1240 | VEC_free (tdesc_type_p, feature->types); | |
123dc839 DJ |
1241 | |
1242 | xfree (feature->name); | |
1243 | xfree (feature); | |
1244 | } | |
1245 | ||
1246 | struct tdesc_feature * | |
1247 | tdesc_create_feature (struct target_desc *tdesc, const char *name) | |
1248 | { | |
1249 | struct tdesc_feature *new_feature = XZALLOC (struct tdesc_feature); | |
1250 | ||
1251 | new_feature->name = xstrdup (name); | |
1252 | ||
1253 | VEC_safe_push (tdesc_feature_p, tdesc->features, new_feature); | |
1254 | return new_feature; | |
1255 | } | |
1256 | ||
424163ea DJ |
1257 | struct target_desc * |
1258 | allocate_target_description (void) | |
1259 | { | |
1260 | return XZALLOC (struct target_desc); | |
1261 | } | |
29709017 | 1262 | |
23181151 DJ |
1263 | static void |
1264 | free_target_description (void *arg) | |
1265 | { | |
1266 | struct target_desc *target_desc = arg; | |
123dc839 | 1267 | struct tdesc_feature *feature; |
23181151 DJ |
1268 | struct property *prop; |
1269 | int ix; | |
1270 | ||
123dc839 DJ |
1271 | for (ix = 0; |
1272 | VEC_iterate (tdesc_feature_p, target_desc->features, ix, feature); | |
1273 | ix++) | |
1274 | tdesc_free_feature (feature); | |
1275 | VEC_free (tdesc_feature_p, target_desc->features); | |
1276 | ||
23181151 DJ |
1277 | for (ix = 0; |
1278 | VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1279 | ix++) | |
1280 | { | |
1281 | xfree (prop->key); | |
1282 | xfree (prop->value); | |
1283 | } | |
1284 | VEC_free (property_s, target_desc->properties); | |
1285 | ||
e35359c5 UW |
1286 | VEC_free (arch_p, target_desc->compatible); |
1287 | ||
23181151 DJ |
1288 | xfree (target_desc); |
1289 | } | |
1290 | ||
1291 | struct cleanup * | |
1292 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1293 | { | |
1294 | return make_cleanup (free_target_description, target_desc); | |
1295 | } | |
1296 | ||
e35359c5 UW |
1297 | void |
1298 | tdesc_add_compatible (struct target_desc *target_desc, | |
1299 | const struct bfd_arch_info *compatible) | |
1300 | { | |
1301 | const struct bfd_arch_info *compat; | |
1302 | int ix; | |
1303 | ||
1304 | /* If this instance of GDB is compiled without BFD support for the | |
1305 | compatible architecture, simply ignore it -- we would not be able | |
1306 | to handle it anyway. */ | |
1307 | if (compatible == NULL) | |
1308 | return; | |
1309 | ||
1310 | for (ix = 0; VEC_iterate (arch_p, target_desc->compatible, ix, compat); | |
1311 | ix++) | |
1312 | if (compat == compatible) | |
1313 | internal_error (__FILE__, __LINE__, | |
1314 | _("Attempted to add duplicate " | |
1315 | "compatible architecture \"%s\""), | |
1316 | compatible->printable_name); | |
1317 | ||
1318 | VEC_safe_push (arch_p, target_desc->compatible, compatible); | |
1319 | } | |
1320 | ||
29709017 DJ |
1321 | void |
1322 | set_tdesc_property (struct target_desc *target_desc, | |
1323 | const char *key, const char *value) | |
1324 | { | |
1325 | struct property *prop, new_prop; | |
1326 | int ix; | |
1327 | ||
1328 | gdb_assert (key != NULL && value != NULL); | |
1329 | ||
1330 | for (ix = 0; VEC_iterate (property_s, target_desc->properties, ix, prop); | |
1331 | ix++) | |
1332 | if (strcmp (prop->key, key) == 0) | |
1333 | internal_error (__FILE__, __LINE__, | |
1334 | _("Attempted to add duplicate property \"%s\""), key); | |
1335 | ||
23181151 DJ |
1336 | new_prop.key = xstrdup (key); |
1337 | new_prop.value = xstrdup (value); | |
29709017 DJ |
1338 | VEC_safe_push (property_s, target_desc->properties, &new_prop); |
1339 | } | |
23181151 DJ |
1340 | |
1341 | void | |
1342 | set_tdesc_architecture (struct target_desc *target_desc, | |
1343 | const struct bfd_arch_info *arch) | |
1344 | { | |
1345 | target_desc->arch = arch; | |
1346 | } | |
08d16641 PA |
1347 | |
1348 | void | |
1349 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1350 | { | |
1351 | target_desc->osabi = osabi; | |
1352 | } | |
23181151 DJ |
1353 | \f |
1354 | ||
1355 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1356 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1357 | ||
1358 | /* Helper functions for the CLI commands. */ | |
1359 | ||
1360 | static void | |
1361 | set_tdesc_cmd (char *args, int from_tty) | |
1362 | { | |
1363 | help_list (tdesc_set_cmdlist, "set tdesc ", -1, gdb_stdout); | |
1364 | } | |
1365 | ||
1366 | static void | |
1367 | show_tdesc_cmd (char *args, int from_tty) | |
1368 | { | |
1369 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1370 | } | |
1371 | ||
1372 | static void | |
1373 | unset_tdesc_cmd (char *args, int from_tty) | |
1374 | { | |
1375 | help_list (tdesc_unset_cmdlist, "unset tdesc ", -1, gdb_stdout); | |
1376 | } | |
1377 | ||
1378 | static void | |
1379 | set_tdesc_filename_cmd (char *args, int from_tty, | |
1380 | struct cmd_list_element *c) | |
1381 | { | |
1382 | target_clear_description (); | |
1383 | target_find_description (); | |
1384 | } | |
1385 | ||
1386 | static void | |
1387 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1388 | struct cmd_list_element *c, | |
1389 | const char *value) | |
1390 | { | |
1391 | if (value != NULL && *value != '\0') | |
1392 | printf_filtered (_("\ | |
1393 | The target description will be read from \"%s\".\n"), | |
1394 | value); | |
1395 | else | |
1396 | printf_filtered (_("\ | |
1397 | The target description will be read from the target.\n")); | |
1398 | } | |
1399 | ||
1400 | static void | |
1401 | unset_tdesc_filename_cmd (char *args, int from_tty) | |
1402 | { | |
1403 | xfree (target_description_filename); | |
1404 | target_description_filename = NULL; | |
1405 | target_clear_description (); | |
1406 | target_find_description (); | |
1407 | } | |
1408 | ||
81adfced DJ |
1409 | static void |
1410 | maint_print_c_tdesc_cmd (char *args, int from_tty) | |
1411 | { | |
1412 | const struct target_desc *tdesc; | |
e35359c5 | 1413 | const struct bfd_arch_info *compatible; |
81adfced DJ |
1414 | const char *filename, *inp; |
1415 | char *function, *outp; | |
1416 | struct property *prop; | |
1417 | struct tdesc_feature *feature; | |
1418 | struct tdesc_reg *reg; | |
ad068eab UW |
1419 | struct tdesc_type *type; |
1420 | struct tdesc_type_field *f; | |
81adfced DJ |
1421 | int ix, ix2, ix3; |
1422 | ||
1423 | /* Use the global target-supplied description, not the current | |
1424 | architecture's. This lets a GDB for one architecture generate C | |
1425 | for another architecture's description, even though the gdbarch | |
1426 | initialization code will reject the new description. */ | |
1427 | tdesc = current_target_desc; | |
1428 | if (tdesc == NULL) | |
1429 | error (_("There is no target description to print.")); | |
1430 | ||
1431 | if (target_description_filename == NULL) | |
1432 | error (_("The current target description did not come from an XML file.")); | |
1433 | ||
1434 | filename = lbasename (target_description_filename); | |
db3b9a10 | 1435 | function = alloca (strlen (filename) + 1); |
81adfced DJ |
1436 | for (inp = filename, outp = function; *inp != '\0'; inp++) |
1437 | if (*inp == '.') | |
1438 | break; | |
1439 | else if (*inp == '-') | |
1440 | *outp++ = '_'; | |
1441 | else | |
1442 | *outp++ = *inp; | |
1443 | *outp = '\0'; | |
1444 | ||
1445 | /* Standard boilerplate. */ | |
1446 | printf_unfiltered ("/* THIS FILE IS GENERATED. Original: %s */\n\n", | |
1447 | filename); | |
1448 | printf_unfiltered ("#include \"defs.h\"\n"); | |
c3f08eb7 | 1449 | printf_unfiltered ("#include \"osabi.h\"\n"); |
81adfced DJ |
1450 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); |
1451 | printf_unfiltered ("\n"); | |
1452 | ||
1453 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", function); | |
1454 | printf_unfiltered ("static void\n"); | |
1455 | printf_unfiltered ("initialize_tdesc_%s (void)\n", function); | |
1456 | printf_unfiltered ("{\n"); | |
1457 | printf_unfiltered | |
1458 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1459 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
ad068eab | 1460 | printf_unfiltered (" struct tdesc_type *field_type, *type;\n"); |
81adfced DJ |
1461 | printf_unfiltered ("\n"); |
1462 | ||
1463 | if (tdesc_architecture (tdesc) != NULL) | |
1464 | { | |
1465 | printf_unfiltered | |
1466 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1467 | tdesc_architecture (tdesc)->printable_name); | |
1468 | printf_unfiltered ("\n"); | |
1469 | } | |
1470 | ||
c3f08eb7 L |
1471 | if (tdesc_osabi (tdesc) > GDB_OSABI_UNKNOWN |
1472 | && tdesc_osabi (tdesc) < GDB_OSABI_INVALID) | |
1473 | { | |
1474 | printf_unfiltered | |
1475 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1476 | gdbarch_osabi_name (tdesc_osabi (tdesc))); | |
1477 | printf_unfiltered ("\n"); | |
1478 | } | |
1479 | ||
e35359c5 UW |
1480 | for (ix = 0; VEC_iterate (arch_p, tdesc->compatible, ix, compatible); |
1481 | ix++) | |
1482 | { | |
1483 | printf_unfiltered | |
1484 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1485 | compatible->printable_name); | |
1486 | } | |
1487 | if (ix) | |
1488 | printf_unfiltered ("\n"); | |
1489 | ||
81adfced DJ |
1490 | for (ix = 0; VEC_iterate (property_s, tdesc->properties, ix, prop); |
1491 | ix++) | |
1492 | { | |
1493 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1494 | prop->key, prop->value); | |
1495 | } | |
1496 | ||
1497 | for (ix = 0; | |
1498 | VEC_iterate (tdesc_feature_p, tdesc->features, ix, feature); | |
1499 | ix++) | |
1500 | { | |
1501 | printf_unfiltered (" feature = tdesc_create_feature (result, \"%s\");\n", | |
1502 | feature->name); | |
1503 | ||
1504 | for (ix2 = 0; | |
ad068eab | 1505 | VEC_iterate (tdesc_type_p, feature->types, ix2, type); |
81adfced DJ |
1506 | ix2++) |
1507 | { | |
ad068eab | 1508 | switch (type->kind) |
81adfced | 1509 | { |
ad068eab | 1510 | case TDESC_TYPE_VECTOR: |
81adfced DJ |
1511 | printf_unfiltered |
1512 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1513 | type->u.v.type->name); |
81adfced | 1514 | printf_unfiltered |
ad068eab UW |
1515 | (" tdesc_create_vector (feature, \"%s\", field_type, %d);\n", |
1516 | type->name, type->u.v.count); | |
81adfced | 1517 | break; |
ad068eab | 1518 | case TDESC_TYPE_UNION: |
81adfced | 1519 | printf_unfiltered |
ad068eab UW |
1520 | (" type = tdesc_create_union (feature, \"%s\");\n", |
1521 | type->name); | |
1522 | for (ix3 = 0; | |
1523 | VEC_iterate (tdesc_type_field, type->u.u.fields, ix3, f); | |
1524 | ix3++) | |
81adfced DJ |
1525 | { |
1526 | printf_unfiltered | |
1527 | (" field_type = tdesc_named_type (feature, \"%s\");\n", | |
ad068eab | 1528 | f->type->name); |
81adfced | 1529 | printf_unfiltered |
ad068eab UW |
1530 | (" tdesc_add_field (type, \"%s\", field_type);\n", |
1531 | f->name); | |
81adfced | 1532 | } |
81adfced DJ |
1533 | break; |
1534 | default: | |
ad068eab | 1535 | error (_("C output is not supported type \"%s\"."), type->name); |
81adfced | 1536 | } |
81adfced DJ |
1537 | printf_unfiltered ("\n"); |
1538 | } | |
1539 | ||
1540 | for (ix2 = 0; | |
1541 | VEC_iterate (tdesc_reg_p, feature->registers, ix2, reg); | |
1542 | ix2++) | |
1543 | { | |
1544 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
1545 | reg->name, reg->target_regnum, reg->save_restore); | |
1546 | if (reg->group) | |
1547 | printf_unfiltered ("\"%s\", ", reg->group); | |
1548 | else | |
1549 | printf_unfiltered ("NULL, "); | |
1550 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type); | |
1551 | } | |
1552 | ||
1553 | printf_unfiltered ("\n"); | |
1554 | } | |
1555 | ||
1556 | printf_unfiltered (" tdesc_%s = result;\n", function); | |
1557 | printf_unfiltered ("}\n"); | |
1558 | } | |
1559 | ||
2c0b251b PA |
1560 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1561 | extern initialize_file_ftype _initialize_target_descriptions; | |
1562 | ||
23181151 DJ |
1563 | void |
1564 | _initialize_target_descriptions (void) | |
1565 | { | |
123dc839 DJ |
1566 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1567 | ||
23181151 DJ |
1568 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1569 | Set target description specific variables."), | |
1570 | &tdesc_set_cmdlist, "set tdesc ", | |
1571 | 0 /* allow-unknown */, &setlist); | |
1572 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1573 | Show target description specific variables."), | |
1574 | &tdesc_show_cmdlist, "show tdesc ", | |
1575 | 0 /* allow-unknown */, &showlist); | |
1576 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1577 | Unset target description specific variables."), | |
1578 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1579 | 0 /* allow-unknown */, &unsetlist); | |
1580 | ||
1581 | add_setshow_filename_cmd ("filename", class_obscure, | |
1582 | &target_description_filename, | |
1583 | _("\ | |
1584 | Set the file to read for an XML target description"), _("\ | |
1585 | Show the file to read for an XML target description"), _("\ | |
1586 | When set, GDB will read the target description from a local\n\ | |
1587 | file instead of querying the remote target."), | |
1588 | set_tdesc_filename_cmd, | |
1589 | show_tdesc_filename_cmd, | |
1590 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1591 | ||
1592 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1593 | Unset the file to read for an XML target description. When unset,\n\ | |
1594 | GDB will read the description from the target."), | |
1595 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1596 | |
1597 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1598 | Print the current target description as a C source file."), | |
1599 | &maintenanceprintlist); | |
23181151 | 1600 | } |