Commit | Line | Data |
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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
e2882c85 | 3 | Copyright (C) 2006-2018 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" |
25aa13e5 | 37 | #include <algorithm> |
27d41eac YQ |
38 | #include "completer.h" |
39 | #include "readline/tilde.h" /* tilde_expand */ | |
424163ea | 40 | |
6eb1e6a8 YQ |
41 | /* The interface to visit different elements of target description. */ |
42 | ||
43 | class tdesc_element_visitor | |
44 | { | |
45 | public: | |
46 | virtual void visit_pre (const target_desc *e) = 0; | |
47 | virtual void visit_post (const target_desc *e) = 0; | |
48 | ||
25aa13e5 YQ |
49 | virtual void visit_pre (const tdesc_feature *e) = 0; |
50 | virtual void visit_post (const tdesc_feature *e) = 0; | |
51 | ||
d4a0e8b5 SM |
52 | virtual void visit (const tdesc_type_builtin *e) = 0; |
53 | virtual void visit (const tdesc_type_vector *e) = 0; | |
54 | virtual void visit (const tdesc_type_with_fields *e) = 0; | |
55 | ||
6eb1e6a8 YQ |
56 | virtual void visit (const tdesc_reg *e) = 0; |
57 | }; | |
58 | ||
59 | class tdesc_element | |
60 | { | |
61 | public: | |
62 | virtual void accept (tdesc_element_visitor &v) const = 0; | |
63 | }; | |
64 | ||
424163ea DJ |
65 | /* Types. */ |
66 | ||
129c10bc | 67 | struct property |
29709017 | 68 | { |
129c10bc SM |
69 | property (const std::string &key_, const std::string &value_) |
70 | : key (key_), value (value_) | |
71 | {} | |
72 | ||
73 | std::string key; | |
74 | std::string value; | |
75 | }; | |
29709017 | 76 | |
123dc839 DJ |
77 | /* An individual register from a target description. */ |
78 | ||
c9c895b9 | 79 | struct tdesc_reg : tdesc_element |
123dc839 | 80 | { |
a8142ee1 | 81 | tdesc_reg (struct tdesc_feature *feature, const std::string &name_, |
72ddacb7 YQ |
82 | int regnum, int save_restore_, const char *group_, |
83 | int bitsize_, const char *type_) | |
a8142ee1 | 84 | : name (name_), target_regnum (regnum), |
72ddacb7 | 85 | save_restore (save_restore_), |
a8142ee1 | 86 | group (group_ != NULL ? group_ : ""), |
72ddacb7 | 87 | bitsize (bitsize_), |
a8142ee1 | 88 | type (type_ != NULL ? type_ : "<unknown>") |
72ddacb7 YQ |
89 | { |
90 | /* If the register's type is target-defined, look it up now. We may not | |
91 | have easy access to the containing feature when we want it later. */ | |
a8142ee1 | 92 | tdesc_type = tdesc_named_type (feature, type.c_str ()); |
72ddacb7 YQ |
93 | } |
94 | ||
a8142ee1 | 95 | virtual ~tdesc_reg () = default; |
72ddacb7 | 96 | |
d6541620 | 97 | DISABLE_COPY_AND_ASSIGN (tdesc_reg); |
72ddacb7 | 98 | |
123dc839 DJ |
99 | /* The name of this register. In standard features, it may be |
100 | recognized by the architecture support code, or it may be purely | |
101 | for the user. */ | |
a8142ee1 | 102 | std::string name; |
123dc839 DJ |
103 | |
104 | /* The register number used by this target to refer to this | |
105 | register. This is used for remote p/P packets and to determine | |
106 | the ordering of registers in the remote g/G packets. */ | |
107 | long target_regnum; | |
108 | ||
109 | /* If this flag is set, GDB should save and restore this register | |
110 | around calls to an inferior function. */ | |
111 | int save_restore; | |
112 | ||
a8142ee1 | 113 | /* The name of the register group containing this register, or empty |
cef0f868 SH |
114 | if the group should be automatically determined from the register's |
115 | type. This is traditionally "general", "float", "vector" but can | |
116 | also be an arbitrary string. If defined the corresponding "info" | |
117 | command should display this register's value. The string should be | |
118 | limited to alphanumeric characters and internal hyphens. */ | |
a8142ee1 | 119 | std::string group; |
123dc839 DJ |
120 | |
121 | /* The size of the register, in bits. */ | |
122 | int bitsize; | |
123 | ||
124 | /* The type of the register. This string corresponds to either | |
125 | a named type from the target description or a predefined | |
126 | type from GDB. */ | |
a8142ee1 | 127 | std::string type; |
123dc839 DJ |
128 | |
129 | /* The target-described type corresponding to TYPE, if found. */ | |
ad068eab | 130 | struct tdesc_type *tdesc_type; |
6eb1e6a8 YQ |
131 | |
132 | void accept (tdesc_element_visitor &v) const override | |
133 | { | |
134 | v.visit (this); | |
135 | } | |
136 | ||
27d41eac YQ |
137 | bool operator== (const tdesc_reg &other) const |
138 | { | |
a8142ee1 | 139 | return (name == other.name |
27d41eac YQ |
140 | && target_regnum == other.target_regnum |
141 | && save_restore == other.save_restore | |
142 | && bitsize == other.bitsize | |
a8142ee1 SM |
143 | && group == other.group |
144 | && type == other.type); | |
27d41eac YQ |
145 | } |
146 | ||
147 | bool operator!= (const tdesc_reg &other) const | |
148 | { | |
149 | return !(*this == other); | |
150 | } | |
c9c895b9 SM |
151 | }; |
152 | ||
153 | typedef std::unique_ptr<tdesc_reg> tdesc_reg_up; | |
123dc839 DJ |
154 | |
155 | /* A named type from a target description. */ | |
ad068eab | 156 | |
d05200d1 | 157 | struct tdesc_type_field |
ad068eab | 158 | { |
d05200d1 SM |
159 | tdesc_type_field (const std::string &name_, tdesc_type *type_, |
160 | int start_, int end_) | |
161 | : name (name_), type (type_), start (start_), end (end_) | |
162 | {} | |
163 | ||
164 | std::string name; | |
ad068eab | 165 | struct tdesc_type *type; |
81516450 DE |
166 | /* For non-enum-values, either both are -1 (non-bitfield), or both are |
167 | not -1 (bitfield). For enum values, start is the value (which could be | |
168 | -1), end is -1. */ | |
f5dff777 | 169 | int start, end; |
d05200d1 | 170 | }; |
ad068eab | 171 | |
52059ffd TT |
172 | enum tdesc_type_kind |
173 | { | |
174 | /* Predefined types. */ | |
81516450 | 175 | TDESC_TYPE_BOOL, |
52059ffd TT |
176 | TDESC_TYPE_INT8, |
177 | TDESC_TYPE_INT16, | |
178 | TDESC_TYPE_INT32, | |
179 | TDESC_TYPE_INT64, | |
180 | TDESC_TYPE_INT128, | |
181 | TDESC_TYPE_UINT8, | |
182 | TDESC_TYPE_UINT16, | |
183 | TDESC_TYPE_UINT32, | |
184 | TDESC_TYPE_UINT64, | |
185 | TDESC_TYPE_UINT128, | |
186 | TDESC_TYPE_CODE_PTR, | |
187 | TDESC_TYPE_DATA_PTR, | |
188 | TDESC_TYPE_IEEE_SINGLE, | |
189 | TDESC_TYPE_IEEE_DOUBLE, | |
190 | TDESC_TYPE_ARM_FPA_EXT, | |
191 | TDESC_TYPE_I387_EXT, | |
192 | ||
193 | /* Types defined by a target feature. */ | |
194 | TDESC_TYPE_VECTOR, | |
195 | TDESC_TYPE_STRUCT, | |
196 | TDESC_TYPE_UNION, | |
81516450 DE |
197 | TDESC_TYPE_FLAGS, |
198 | TDESC_TYPE_ENUM | |
52059ffd TT |
199 | }; |
200 | ||
53c934e9 | 201 | struct tdesc_type : tdesc_element |
ad068eab | 202 | { |
082b9140 SM |
203 | tdesc_type (const std::string &name_, enum tdesc_type_kind kind_) |
204 | : name (name_), kind (kind_) | |
d4a0e8b5 SM |
205 | {} |
206 | ||
207 | virtual ~tdesc_type () = default; | |
208 | ||
209 | DISABLE_COPY_AND_ASSIGN (tdesc_type); | |
210 | ||
211 | /* The name of this type. */ | |
212 | std::string name; | |
213 | ||
214 | /* Identify the kind of this type. */ | |
215 | enum tdesc_type_kind kind; | |
216 | ||
217 | bool operator== (const tdesc_type &other) const | |
72ddacb7 | 218 | { |
d4a0e8b5 SM |
219 | return name == other.name && kind == other.kind; |
220 | } | |
d05200d1 | 221 | |
d4a0e8b5 SM |
222 | bool operator!= (const tdesc_type &other) const |
223 | { | |
224 | return !(*this == other); | |
225 | } | |
d05200d1 | 226 | |
d4a0e8b5 SM |
227 | /* Construct, if necessary, and return the GDB type implementing this |
228 | target type for architecture GDBARCH. */ | |
229 | ||
230 | virtual type *make_gdb_type (struct gdbarch *gdbarch) const = 0; | |
231 | }; | |
232 | ||
233 | typedef std::unique_ptr<tdesc_type> tdesc_type_up; | |
234 | ||
235 | struct tdesc_type_builtin : tdesc_type | |
236 | { | |
237 | tdesc_type_builtin (const std::string &name, enum tdesc_type_kind kind) | |
238 | : tdesc_type (name, kind) | |
239 | {} | |
240 | ||
241 | void accept (tdesc_element_visitor &v) const override | |
242 | { | |
243 | v.visit (this); | |
72ddacb7 YQ |
244 | } |
245 | ||
d4a0e8b5 | 246 | type *make_gdb_type (struct gdbarch *gdbarch) const override |
72ddacb7 | 247 | { |
d4a0e8b5 | 248 | switch (this->kind) |
72ddacb7 | 249 | { |
d4a0e8b5 SM |
250 | /* Predefined types. */ |
251 | case TDESC_TYPE_BOOL: | |
252 | return builtin_type (gdbarch)->builtin_bool; | |
72ddacb7 | 253 | |
d4a0e8b5 SM |
254 | case TDESC_TYPE_INT8: |
255 | return builtin_type (gdbarch)->builtin_int8; | |
256 | ||
257 | case TDESC_TYPE_INT16: | |
258 | return builtin_type (gdbarch)->builtin_int16; | |
259 | ||
260 | case TDESC_TYPE_INT32: | |
261 | return builtin_type (gdbarch)->builtin_int32; | |
262 | ||
263 | case TDESC_TYPE_INT64: | |
264 | return builtin_type (gdbarch)->builtin_int64; | |
265 | ||
266 | case TDESC_TYPE_INT128: | |
267 | return builtin_type (gdbarch)->builtin_int128; | |
268 | ||
269 | case TDESC_TYPE_UINT8: | |
270 | return builtin_type (gdbarch)->builtin_uint8; | |
271 | ||
272 | case TDESC_TYPE_UINT16: | |
273 | return builtin_type (gdbarch)->builtin_uint16; | |
274 | ||
275 | case TDESC_TYPE_UINT32: | |
276 | return builtin_type (gdbarch)->builtin_uint32; | |
277 | ||
278 | case TDESC_TYPE_UINT64: | |
279 | return builtin_type (gdbarch)->builtin_uint64; | |
280 | ||
281 | case TDESC_TYPE_UINT128: | |
282 | return builtin_type (gdbarch)->builtin_uint128; | |
283 | ||
284 | case TDESC_TYPE_CODE_PTR: | |
285 | return builtin_type (gdbarch)->builtin_func_ptr; | |
286 | ||
287 | case TDESC_TYPE_DATA_PTR: | |
288 | return builtin_type (gdbarch)->builtin_data_ptr; | |
289 | } | |
290 | ||
291 | type *gdb_type = tdesc_find_type (gdbarch, this->name.c_str ()); | |
292 | if (gdb_type != NULL) | |
293 | return gdb_type; | |
294 | ||
295 | switch (this->kind) | |
296 | { | |
297 | case TDESC_TYPE_IEEE_SINGLE: | |
298 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_single", | |
299 | floatformats_ieee_single); | |
300 | ||
301 | case TDESC_TYPE_IEEE_DOUBLE: | |
302 | return arch_float_type (gdbarch, -1, "builtin_type_ieee_double", | |
303 | floatformats_ieee_double); | |
304 | ||
305 | case TDESC_TYPE_ARM_FPA_EXT: | |
306 | return arch_float_type (gdbarch, -1, "builtin_type_arm_ext", | |
307 | floatformats_arm_ext); | |
308 | ||
309 | case TDESC_TYPE_I387_EXT: | |
310 | return arch_float_type (gdbarch, -1, "builtin_type_i387_ext", | |
311 | floatformats_i387_ext); | |
72ddacb7 | 312 | } |
d4a0e8b5 SM |
313 | |
314 | internal_error (__FILE__, __LINE__, | |
315 | "Type \"%s\" has an unknown kind %d", | |
316 | this->name.c_str (), this->kind); | |
317 | ||
318 | return NULL; | |
72ddacb7 | 319 | } |
d4a0e8b5 | 320 | }; |
d6541620 | 321 | |
d4a0e8b5 | 322 | /* tdesc_type for vector types. */ |
72ddacb7 | 323 | |
d4a0e8b5 SM |
324 | struct tdesc_type_vector : tdesc_type |
325 | { | |
326 | tdesc_type_vector (const std::string &name, tdesc_type *element_type_, int count_) | |
327 | : tdesc_type (name, TDESC_TYPE_VECTOR), | |
328 | element_type (element_type_), count (count_) | |
329 | {} | |
ad068eab | 330 | |
d4a0e8b5 SM |
331 | void accept (tdesc_element_visitor &v) const override |
332 | { | |
333 | v.visit (this); | |
334 | } | |
ad068eab | 335 | |
d4a0e8b5 | 336 | type *make_gdb_type (struct gdbarch *gdbarch) const override |
ad068eab | 337 | { |
d4a0e8b5 SM |
338 | type *vector_gdb_type = tdesc_find_type (gdbarch, this->name.c_str ()); |
339 | if (vector_gdb_type != NULL) | |
340 | return vector_gdb_type; | |
ad068eab | 341 | |
d4a0e8b5 SM |
342 | type *element_gdb_type = this->element_type->make_gdb_type (gdbarch); |
343 | vector_gdb_type = init_vector_type (element_gdb_type, this->count); | |
344 | TYPE_NAME (vector_gdb_type) = xstrdup (this->name.c_str ()); | |
345 | ||
346 | return vector_gdb_type; | |
347 | } | |
348 | ||
349 | struct tdesc_type *element_type; | |
350 | int count; | |
351 | }; | |
352 | ||
353 | /* tdesc_type for struct, union, flags, and enum types. */ | |
354 | ||
355 | struct tdesc_type_with_fields : tdesc_type | |
356 | { | |
357 | tdesc_type_with_fields (const std::string &name, tdesc_type_kind kind, | |
358 | int size_ = 0) | |
359 | : tdesc_type (name, kind), size (size_) | |
360 | {} | |
6eb1e6a8 YQ |
361 | |
362 | void accept (tdesc_element_visitor &v) const override | |
363 | { | |
364 | v.visit (this); | |
365 | } | |
366 | ||
d4a0e8b5 | 367 | type *make_gdb_type_struct (struct gdbarch *gdbarch) const |
27d41eac | 368 | { |
d4a0e8b5 SM |
369 | type *struct_gdb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
370 | TYPE_NAME (struct_gdb_type) = xstrdup (this->name.c_str ()); | |
371 | TYPE_TAG_NAME (struct_gdb_type) = TYPE_NAME (struct_gdb_type); | |
372 | ||
373 | for (const tdesc_type_field &f : this->fields) | |
374 | { | |
375 | if (f.start != -1 && f.end != -1) | |
376 | { | |
377 | /* Bitfield. */ | |
378 | struct field *fld; | |
379 | struct type *field_gdb_type; | |
380 | int bitsize, total_size; | |
381 | ||
382 | /* This invariant should be preserved while creating types. */ | |
383 | gdb_assert (this->size != 0); | |
384 | if (f.type != NULL) | |
385 | field_gdb_type = f.type->make_gdb_type (gdbarch); | |
386 | else if (this->size > 4) | |
387 | field_gdb_type = builtin_type (gdbarch)->builtin_uint64; | |
388 | else | |
389 | field_gdb_type = builtin_type (gdbarch)->builtin_uint32; | |
390 | ||
391 | fld = append_composite_type_field_raw | |
392 | (struct_gdb_type, xstrdup (f.name.c_str ()), field_gdb_type); | |
393 | ||
394 | /* For little-endian, BITPOS counts from the LSB of | |
395 | the structure and marks the LSB of the field. For | |
396 | big-endian, BITPOS counts from the MSB of the | |
397 | structure and marks the MSB of the field. Either | |
398 | way, it is the number of bits to the "left" of the | |
399 | field. To calculate this in big-endian, we need | |
400 | the total size of the structure. */ | |
401 | bitsize = f.end - f.start + 1; | |
402 | total_size = this->size * TARGET_CHAR_BIT; | |
403 | if (gdbarch_bits_big_endian (gdbarch)) | |
404 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); | |
405 | else | |
406 | SET_FIELD_BITPOS (fld[0], f.start); | |
407 | FIELD_BITSIZE (fld[0]) = bitsize; | |
408 | } | |
409 | else | |
410 | { | |
411 | gdb_assert (f.start == -1 && f.end == -1); | |
412 | type *field_gdb_type = f.type->make_gdb_type (gdbarch); | |
413 | append_composite_type_field (struct_gdb_type, | |
414 | xstrdup (f.name.c_str ()), | |
415 | field_gdb_type); | |
416 | } | |
417 | } | |
418 | ||
419 | if (this->size != 0) | |
420 | TYPE_LENGTH (struct_gdb_type) = this->size; | |
421 | ||
422 | return struct_gdb_type; | |
27d41eac YQ |
423 | } |
424 | ||
d4a0e8b5 | 425 | type *make_gdb_type_union (struct gdbarch *gdbarch) const |
27d41eac | 426 | { |
d4a0e8b5 SM |
427 | type *union_gdb_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
428 | TYPE_NAME (union_gdb_type) = xstrdup (this->name.c_str ()); | |
429 | ||
430 | for (const tdesc_type_field &f : this->fields) | |
431 | { | |
432 | type* field_gdb_type = f.type->make_gdb_type (gdbarch); | |
433 | append_composite_type_field (union_gdb_type, xstrdup (f.name.c_str ()), | |
434 | field_gdb_type); | |
435 | ||
436 | /* If any of the children of a union are vectors, flag the | |
437 | union as a vector also. This allows e.g. a union of two | |
438 | vector types to show up automatically in "info vector". */ | |
439 | if (TYPE_VECTOR (field_gdb_type)) | |
440 | TYPE_VECTOR (union_gdb_type) = 1; | |
441 | } | |
442 | ||
443 | return union_gdb_type; | |
27d41eac | 444 | } |
53c934e9 | 445 | |
d4a0e8b5 SM |
446 | type *make_gdb_type_flags (struct gdbarch *gdbarch) const |
447 | { | |
448 | type *flags_gdb_type = arch_flags_type (gdbarch, this->name.c_str (), | |
449 | this->size * TARGET_CHAR_BIT); | |
450 | ||
451 | for (const tdesc_type_field &f : this->fields) | |
452 | { | |
453 | int bitsize = f.end - f.start + 1; | |
454 | ||
455 | gdb_assert (f.type != NULL); | |
456 | type *field_gdb_type = f.type->make_gdb_type (gdbarch); | |
457 | append_flags_type_field (flags_gdb_type, f.start, bitsize, | |
458 | field_gdb_type, f.name.c_str ()); | |
459 | } | |
460 | ||
461 | return flags_gdb_type; | |
462 | } | |
463 | ||
464 | type *make_gdb_type_enum (struct gdbarch *gdbarch) const | |
465 | { | |
466 | type *enum_gdb_type = arch_type (gdbarch, TYPE_CODE_ENUM, | |
467 | this->size * TARGET_CHAR_BIT, | |
468 | this->name.c_str ()); | |
469 | ||
470 | TYPE_UNSIGNED (enum_gdb_type) = 1; | |
471 | for (const tdesc_type_field &f : this->fields) | |
472 | { | |
473 | struct field *fld | |
474 | = append_composite_type_field_raw (enum_gdb_type, | |
475 | xstrdup (f.name.c_str ()), | |
476 | NULL); | |
477 | ||
478 | SET_FIELD_BITPOS (fld[0], f.start); | |
479 | } | |
480 | ||
481 | return enum_gdb_type; | |
482 | } | |
483 | ||
484 | type *make_gdb_type (struct gdbarch *gdbarch) const override | |
485 | { | |
486 | type *gdb_type = tdesc_find_type (gdbarch, this->name.c_str ()); | |
487 | if (gdb_type != NULL) | |
488 | return gdb_type; | |
489 | ||
490 | switch (this->kind) | |
491 | { | |
492 | case TDESC_TYPE_STRUCT: | |
493 | return make_gdb_type_struct (gdbarch); | |
494 | case TDESC_TYPE_UNION: | |
495 | return make_gdb_type_union (gdbarch); | |
496 | case TDESC_TYPE_FLAGS: | |
497 | return make_gdb_type_flags (gdbarch); | |
498 | case TDESC_TYPE_ENUM: | |
499 | return make_gdb_type_enum (gdbarch); | |
500 | } | |
501 | ||
502 | internal_error (__FILE__, __LINE__, | |
503 | "Type \"%s\" has an unknown kind %d", | |
504 | this->name.c_str (), this->kind); | |
505 | ||
506 | return NULL; | |
507 | } | |
508 | ||
509 | std::vector<tdesc_type_field> fields; | |
510 | int size; | |
511 | }; | |
123dc839 DJ |
512 | |
513 | /* A feature from a target description. Each feature is a collection | |
514 | of other elements, e.g. registers and types. */ | |
515 | ||
3eea796c | 516 | struct tdesc_feature : tdesc_element |
123dc839 | 517 | { |
f65ff9f9 SM |
518 | tdesc_feature (const std::string &name_) |
519 | : name (name_) | |
72ddacb7 YQ |
520 | {} |
521 | ||
53c934e9 | 522 | virtual ~tdesc_feature () = default; |
72ddacb7 | 523 | |
d6541620 | 524 | DISABLE_COPY_AND_ASSIGN (tdesc_feature); |
72ddacb7 | 525 | |
123dc839 DJ |
526 | /* The name of this feature. It may be recognized by the architecture |
527 | support code. */ | |
f65ff9f9 | 528 | std::string name; |
123dc839 DJ |
529 | |
530 | /* The registers associated with this feature. */ | |
858c9d13 | 531 | std::vector<tdesc_reg_up> registers; |
123dc839 DJ |
532 | |
533 | /* The types associated with this feature. */ | |
53c934e9 | 534 | std::vector<tdesc_type_up> types; |
6eb1e6a8 YQ |
535 | |
536 | void accept (tdesc_element_visitor &v) const override | |
537 | { | |
25aa13e5 | 538 | v.visit_pre (this); |
6eb1e6a8 | 539 | |
53c934e9 | 540 | for (const tdesc_type_up &type : types) |
6eb1e6a8 YQ |
541 | type->accept (v); |
542 | ||
c9c895b9 | 543 | for (const tdesc_reg_up ® : registers) |
6eb1e6a8 YQ |
544 | reg->accept (v); |
545 | ||
25aa13e5 YQ |
546 | v.visit_post (this); |
547 | } | |
27d41eac YQ |
548 | |
549 | bool operator== (const tdesc_feature &other) const | |
550 | { | |
f65ff9f9 | 551 | if (name != other.name) |
27d41eac YQ |
552 | return false; |
553 | ||
c9c895b9 | 554 | if (registers.size () != other.registers.size ()) |
27d41eac YQ |
555 | return false; |
556 | ||
c9c895b9 | 557 | for (int ix = 0; ix < registers.size (); ix++) |
27d41eac | 558 | { |
c9c895b9 SM |
559 | const tdesc_reg_up ®1 = registers[ix]; |
560 | const tdesc_reg_up ®2 = other.registers[ix]; | |
27d41eac | 561 | |
c9c895b9 | 562 | if (reg1 != reg2 && *reg1 != *reg2) |
27d41eac YQ |
563 | return false; |
564 | } | |
565 | ||
53c934e9 | 566 | if (types.size () != other.types.size ()) |
27d41eac YQ |
567 | return false; |
568 | ||
53c934e9 | 569 | for (int ix = 0; ix < types.size (); ix++) |
27d41eac | 570 | { |
53c934e9 SM |
571 | const tdesc_type_up &type1 = types[ix]; |
572 | const tdesc_type_up &type2 = other.types[ix]; | |
27d41eac | 573 | |
53c934e9 | 574 | if (type1 != type2 && *type1 != *type2) |
27d41eac YQ |
575 | return false; |
576 | } | |
577 | ||
578 | return true; | |
579 | } | |
580 | ||
581 | bool operator!= (const tdesc_feature &other) const | |
582 | { | |
583 | return !(*this == other); | |
584 | } | |
3eea796c SM |
585 | }; |
586 | ||
587 | typedef std::unique_ptr<tdesc_feature> tdesc_feature_up; | |
123dc839 DJ |
588 | |
589 | /* A target description. */ | |
590 | ||
6eb1e6a8 | 591 | struct target_desc : tdesc_element |
424163ea | 592 | { |
b468ff4c YQ |
593 | target_desc () |
594 | {} | |
595 | ||
3eea796c | 596 | virtual ~target_desc () = default; |
b468ff4c YQ |
597 | |
598 | target_desc (const target_desc &) = delete; | |
599 | void operator= (const target_desc &) = delete; | |
600 | ||
23181151 | 601 | /* The architecture reported by the target, if any. */ |
b468ff4c | 602 | const struct bfd_arch_info *arch = NULL; |
23181151 | 603 | |
08d16641 PA |
604 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
605 | otherwise. */ | |
b468ff4c | 606 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 607 | |
e35359c5 | 608 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 609 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 610 | |
29709017 | 611 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 612 | std::vector<property> properties; |
123dc839 DJ |
613 | |
614 | /* The features associated with this target. */ | |
858c9d13 | 615 | std::vector<tdesc_feature_up> features; |
6eb1e6a8 YQ |
616 | |
617 | void accept (tdesc_element_visitor &v) const override | |
618 | { | |
619 | v.visit_pre (this); | |
620 | ||
3eea796c | 621 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
622 | feature->accept (v); |
623 | ||
624 | v.visit_post (this); | |
625 | } | |
27d41eac YQ |
626 | |
627 | bool operator== (const target_desc &other) const | |
628 | { | |
629 | if (arch != other.arch) | |
630 | return false; | |
631 | ||
632 | if (osabi != other.osabi) | |
633 | return false; | |
634 | ||
3eea796c | 635 | if (features.size () != other.features.size ()) |
27d41eac YQ |
636 | return false; |
637 | ||
3eea796c | 638 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 639 | { |
3eea796c SM |
640 | const tdesc_feature_up &feature1 = features[ix]; |
641 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 642 | |
3eea796c | 643 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
644 | return false; |
645 | } | |
646 | ||
647 | return true; | |
648 | } | |
649 | ||
650 | bool operator!= (const target_desc &other) const | |
651 | { | |
652 | return !(*this == other); | |
653 | } | |
123dc839 DJ |
654 | }; |
655 | ||
656 | /* Per-architecture data associated with a target description. The | |
657 | target description may be shared by multiple architectures, but | |
658 | this data is private to one gdbarch. */ | |
659 | ||
f0cddbef | 660 | struct tdesc_arch_reg |
ad068eab | 661 | { |
f0cddbef SM |
662 | tdesc_arch_reg (tdesc_reg *reg_, struct type *type_) |
663 | : reg (reg_), type (type_) | |
664 | {} | |
665 | ||
ad068eab UW |
666 | struct tdesc_reg *reg; |
667 | struct type *type; | |
f0cddbef | 668 | }; |
ad068eab | 669 | |
123dc839 DJ |
670 | struct tdesc_arch_data |
671 | { | |
ad068eab | 672 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
673 | During initialization of the gdbarch this list is used to store |
674 | registers which the architecture assigns a fixed register number. | |
675 | Registers which are NULL in this array, or off the end, are | |
676 | treated as zero-sized and nameless (i.e. placeholders in the | |
677 | numbering). */ | |
f0cddbef | 678 | std::vector<tdesc_arch_reg> arch_regs; |
123dc839 DJ |
679 | |
680 | /* Functions which report the register name, type, and reggroups for | |
681 | pseudo-registers. */ | |
f0cddbef SM |
682 | gdbarch_register_name_ftype *pseudo_register_name = NULL; |
683 | gdbarch_register_type_ftype *pseudo_register_type = NULL; | |
684 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p = NULL; | |
424163ea DJ |
685 | }; |
686 | ||
6ecd4729 PA |
687 | /* Info about an inferior's target description. There's one of these |
688 | for each inferior. */ | |
424163ea | 689 | |
6ecd4729 PA |
690 | struct target_desc_info |
691 | { | |
692 | /* A flag indicating that a description has already been fetched | |
693 | from the target, so it should not be queried again. */ | |
694 | ||
695 | int fetched; | |
424163ea | 696 | |
6ecd4729 PA |
697 | /* The description fetched from the target, or NULL if the target |
698 | did not supply any description. Only valid when | |
699 | target_desc_fetched is set. Only the description initialization | |
700 | code should access this; normally, the description should be | |
701 | accessed through the gdbarch object. */ | |
424163ea | 702 | |
6ecd4729 | 703 | const struct target_desc *tdesc; |
424163ea | 704 | |
6ecd4729 PA |
705 | /* The filename to read a target description from, as set by "set |
706 | tdesc filename ..." */ | |
424163ea | 707 | |
6ecd4729 PA |
708 | char *filename; |
709 | }; | |
23181151 | 710 | |
6ecd4729 PA |
711 | /* Get the inferior INF's target description info, allocating one on |
712 | the stop if necessary. */ | |
23181151 | 713 | |
6ecd4729 PA |
714 | static struct target_desc_info * |
715 | get_tdesc_info (struct inferior *inf) | |
716 | { | |
717 | if (inf->tdesc_info == NULL) | |
718 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
719 | return inf->tdesc_info; | |
720 | } | |
23181151 | 721 | |
123dc839 DJ |
722 | /* A handle for architecture-specific data associated with the |
723 | target description (see struct tdesc_arch_data). */ | |
724 | ||
725 | static struct gdbarch_data *tdesc_data; | |
726 | ||
6ecd4729 PA |
727 | /* See target-descriptions.h. */ |
728 | ||
729 | int | |
730 | target_desc_info_from_user_p (struct target_desc_info *info) | |
731 | { | |
732 | return info != NULL && info->filename != NULL; | |
733 | } | |
734 | ||
735 | /* See target-descriptions.h. */ | |
736 | ||
737 | void | |
738 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
739 | { | |
740 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
741 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
742 | ||
743 | dest->fetched = src->fetched; | |
744 | dest->tdesc = src->tdesc; | |
745 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
746 | } | |
747 | ||
748 | /* See target-descriptions.h. */ | |
749 | ||
750 | void | |
751 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
752 | { | |
753 | if (tdesc_info != NULL) | |
754 | { | |
755 | xfree (tdesc_info->filename); | |
756 | xfree (tdesc_info); | |
757 | } | |
758 | } | |
759 | ||
760 | /* Convenience helper macros. */ | |
761 | ||
762 | #define target_desc_fetched \ | |
763 | get_tdesc_info (current_inferior ())->fetched | |
764 | #define current_target_desc \ | |
765 | get_tdesc_info (current_inferior ())->tdesc | |
766 | #define target_description_filename \ | |
767 | get_tdesc_info (current_inferior ())->filename | |
768 | ||
769 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
770 | ||
771 | static char *tdesc_filename_cmd_string; | |
772 | ||
424163ea DJ |
773 | /* Fetch the current target's description, and switch the current |
774 | architecture to one which incorporates that description. */ | |
775 | ||
776 | void | |
777 | target_find_description (void) | |
778 | { | |
779 | /* If we've already fetched a description from the target, don't do | |
780 | it again. This allows a target to fetch the description early, | |
781 | during its to_open or to_create_inferior, if it needs extra | |
782 | information about the target to initialize. */ | |
783 | if (target_desc_fetched) | |
784 | return; | |
785 | ||
786 | /* The current architecture should not have any target description | |
787 | specified. It should have been cleared, e.g. when we | |
788 | disconnected from the previous target. */ | |
f5656ead | 789 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 790 | |
23181151 DJ |
791 | /* First try to fetch an XML description from the user-specified |
792 | file. */ | |
793 | current_target_desc = NULL; | |
794 | if (target_description_filename != NULL | |
795 | && *target_description_filename != '\0') | |
796 | current_target_desc | |
797 | = file_read_description_xml (target_description_filename); | |
798 | ||
799 | /* Next try to read the description from the current target using | |
800 | target objects. */ | |
801 | if (current_target_desc == NULL) | |
802 | current_target_desc = target_read_description_xml (¤t_target); | |
803 | ||
804 | /* If that failed try a target-specific hook. */ | |
805 | if (current_target_desc == NULL) | |
806 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
807 | |
808 | /* If a non-NULL description was returned, then update the current | |
809 | architecture. */ | |
810 | if (current_target_desc) | |
811 | { | |
812 | struct gdbarch_info info; | |
813 | ||
814 | gdbarch_info_init (&info); | |
815 | info.target_desc = current_target_desc; | |
816 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
817 | warning (_("Architecture rejected target-supplied description")); |
818 | else | |
819 | { | |
820 | struct tdesc_arch_data *data; | |
821 | ||
19ba03f4 SM |
822 | data = ((struct tdesc_arch_data *) |
823 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 824 | if (tdesc_has_registers (current_target_desc) |
f0cddbef | 825 | && data->arch_regs.empty ()) |
123dc839 DJ |
826 | warning (_("Target-supplied registers are not supported " |
827 | "by the current architecture")); | |
828 | } | |
424163ea DJ |
829 | } |
830 | ||
831 | /* Now that we know this description is usable, record that we | |
832 | fetched it. */ | |
833 | target_desc_fetched = 1; | |
834 | } | |
835 | ||
836 | /* Discard any description fetched from the current target, and switch | |
837 | the current architecture to one with no target description. */ | |
838 | ||
839 | void | |
840 | target_clear_description (void) | |
841 | { | |
842 | struct gdbarch_info info; | |
843 | ||
844 | if (!target_desc_fetched) | |
845 | return; | |
846 | ||
847 | target_desc_fetched = 0; | |
848 | current_target_desc = NULL; | |
849 | ||
850 | gdbarch_info_init (&info); | |
851 | if (!gdbarch_update_p (info)) | |
852 | internal_error (__FILE__, __LINE__, | |
853 | _("Could not remove target-supplied description")); | |
854 | } | |
855 | ||
856 | /* Return the global current target description. This should only be | |
857 | used by gdbarch initialization code; most access should be through | |
858 | an existing gdbarch. */ | |
859 | ||
860 | const struct target_desc * | |
861 | target_current_description (void) | |
862 | { | |
863 | if (target_desc_fetched) | |
864 | return current_target_desc; | |
865 | ||
866 | return NULL; | |
867 | } | |
e35359c5 UW |
868 | |
869 | /* Return non-zero if this target description is compatible | |
870 | with the given BFD architecture. */ | |
871 | ||
872 | int | |
873 | tdesc_compatible_p (const struct target_desc *target_desc, | |
874 | const struct bfd_arch_info *arch) | |
875 | { | |
40e2a983 | 876 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
877 | { |
878 | if (compat == arch | |
879 | || arch->compatible (arch, compat) | |
880 | || compat->compatible (compat, arch)) | |
881 | return 1; | |
882 | } | |
883 | ||
884 | return 0; | |
885 | } | |
23181151 DJ |
886 | \f |
887 | ||
123dc839 | 888 | /* Direct accessors for target descriptions. */ |
424163ea | 889 | |
29709017 DJ |
890 | /* Return the string value of a property named KEY, or NULL if the |
891 | property was not specified. */ | |
892 | ||
893 | const char * | |
894 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
895 | { | |
129c10bc SM |
896 | for (const property &prop : target_desc->properties) |
897 | if (prop.key == key) | |
898 | return prop.value.c_str (); | |
29709017 DJ |
899 | |
900 | return NULL; | |
901 | } | |
902 | ||
23181151 DJ |
903 | /* Return the BFD architecture associated with this target |
904 | description, or NULL if no architecture was specified. */ | |
905 | ||
906 | const struct bfd_arch_info * | |
907 | tdesc_architecture (const struct target_desc *target_desc) | |
908 | { | |
909 | return target_desc->arch; | |
910 | } | |
08d16641 PA |
911 | |
912 | /* Return the OSABI associated with this target description, or | |
913 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
914 | ||
915 | enum gdb_osabi | |
916 | tdesc_osabi (const struct target_desc *target_desc) | |
917 | { | |
918 | return target_desc->osabi; | |
919 | } | |
920 | ||
23181151 DJ |
921 | \f |
922 | ||
123dc839 DJ |
923 | /* Return 1 if this target description includes any registers. */ |
924 | ||
925 | int | |
926 | tdesc_has_registers (const struct target_desc *target_desc) | |
927 | { | |
123dc839 DJ |
928 | if (target_desc == NULL) |
929 | return 0; | |
930 | ||
3eea796c | 931 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 932 | if (!feature->registers.empty ()) |
123dc839 DJ |
933 | return 1; |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
938 | /* Return the feature with the given name, if present, or NULL if | |
939 | the named feature is not found. */ | |
940 | ||
941 | const struct tdesc_feature * | |
942 | tdesc_find_feature (const struct target_desc *target_desc, | |
943 | const char *name) | |
944 | { | |
3eea796c | 945 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 946 | if (feature->name == name) |
3eea796c | 947 | return feature.get (); |
123dc839 DJ |
948 | |
949 | return NULL; | |
950 | } | |
951 | ||
952 | /* Return the name of FEATURE. */ | |
953 | ||
954 | const char * | |
955 | tdesc_feature_name (const struct tdesc_feature *feature) | |
956 | { | |
f65ff9f9 | 957 | return feature->name.c_str (); |
123dc839 DJ |
958 | } |
959 | ||
ad068eab | 960 | /* Predefined types. */ |
d4a0e8b5 | 961 | static tdesc_type_builtin tdesc_predefined_types[] = |
81adfced | 962 | { |
81516450 | 963 | { "bool", TDESC_TYPE_BOOL }, |
ad068eab UW |
964 | { "int8", TDESC_TYPE_INT8 }, |
965 | { "int16", TDESC_TYPE_INT16 }, | |
966 | { "int32", TDESC_TYPE_INT32 }, | |
967 | { "int64", TDESC_TYPE_INT64 }, | |
968 | { "int128", TDESC_TYPE_INT128 }, | |
969 | { "uint8", TDESC_TYPE_UINT8 }, | |
970 | { "uint16", TDESC_TYPE_UINT16 }, | |
971 | { "uint32", TDESC_TYPE_UINT32 }, | |
972 | { "uint64", TDESC_TYPE_UINT64 }, | |
973 | { "uint128", TDESC_TYPE_UINT128 }, | |
974 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
975 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
976 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
977 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
9fd3625f | 978 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, |
a6f5ef51 | 979 | { "i387_ext", TDESC_TYPE_I387_EXT } |
ad068eab | 980 | }; |
81adfced | 981 | |
81516450 DE |
982 | /* Lookup a predefined type. */ |
983 | ||
984 | static struct tdesc_type * | |
985 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
986 | { | |
798a7429 | 987 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
81516450 DE |
988 | if (tdesc_predefined_types[ix].kind == kind) |
989 | return &tdesc_predefined_types[ix]; | |
990 | ||
991 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
992 | } | |
993 | ||
f49ff000 | 994 | /* See arch/tdesc.h. */ |
123dc839 | 995 | |
ad068eab | 996 | struct tdesc_type * |
123dc839 DJ |
997 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) |
998 | { | |
123dc839 | 999 | /* First try target-defined types. */ |
53c934e9 | 1000 | for (const tdesc_type_up &type : feature->types) |
082b9140 | 1001 | if (type->name == id) |
53c934e9 | 1002 | return type.get (); |
123dc839 | 1003 | |
81adfced | 1004 | /* Next try the predefined types. */ |
53c934e9 | 1005 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) |
082b9140 | 1006 | if (tdesc_predefined_types[ix].name == id) |
ad068eab | 1007 | return &tdesc_predefined_types[ix]; |
123dc839 DJ |
1008 | |
1009 | return NULL; | |
1010 | } | |
ad068eab | 1011 | |
9fd3625f L |
1012 | /* Lookup type associated with ID. */ |
1013 | ||
1014 | struct type * | |
1015 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
1016 | { | |
f0cddbef SM |
1017 | tdesc_arch_data *data |
1018 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
9fd3625f | 1019 | |
f0cddbef | 1020 | for (const tdesc_arch_reg ® : data->arch_regs) |
9fd3625f | 1021 | { |
f0cddbef SM |
1022 | if (reg.reg |
1023 | && reg.reg->tdesc_type | |
1024 | && reg.type | |
1025 | && reg.reg->tdesc_type->name == id) | |
1026 | return reg.type; | |
9fd3625f L |
1027 | } |
1028 | ||
1029 | return NULL; | |
1030 | } | |
1031 | ||
123dc839 DJ |
1032 | /* Support for registers from target descriptions. */ |
1033 | ||
1034 | /* Construct the per-gdbarch data. */ | |
1035 | ||
1036 | static void * | |
1037 | tdesc_data_init (struct obstack *obstack) | |
1038 | { | |
1039 | struct tdesc_arch_data *data; | |
1040 | ||
1041 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
f0cddbef SM |
1042 | new (data) tdesc_arch_data (); |
1043 | ||
123dc839 DJ |
1044 | return data; |
1045 | } | |
1046 | ||
1047 | /* Similar, but for the temporary copy used during architecture | |
1048 | initialization. */ | |
1049 | ||
1050 | struct tdesc_arch_data * | |
1051 | tdesc_data_alloc (void) | |
1052 | { | |
f0cddbef | 1053 | return new tdesc_arch_data (); |
123dc839 DJ |
1054 | } |
1055 | ||
1056 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
1057 | to be used (for instance if it was unsuitable for the | |
1058 | architecture). */ | |
1059 | ||
1060 | void | |
1061 | tdesc_data_cleanup (void *data_untyped) | |
1062 | { | |
19ba03f4 | 1063 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 1064 | |
f0cddbef | 1065 | delete data; |
123dc839 DJ |
1066 | } |
1067 | ||
1068 | /* Search FEATURE for a register named NAME. */ | |
1069 | ||
7cc46491 DJ |
1070 | static struct tdesc_reg * |
1071 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
1072 | const char *name) | |
123dc839 | 1073 | { |
c9c895b9 | 1074 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 1075 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 1076 | return reg.get (); |
123dc839 | 1077 | |
7cc46491 DJ |
1078 | return NULL; |
1079 | } | |
1080 | ||
1081 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
1082 | ||
1083 | int | |
1084 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
1085 | struct tdesc_arch_data *data, | |
1086 | int regno, const char *name) | |
1087 | { | |
1088 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1089 | ||
1090 | if (reg == NULL) | |
1091 | return 0; | |
1092 | ||
1093 | /* Make sure the vector includes a REGNO'th element. */ | |
f0cddbef SM |
1094 | while (regno >= data->arch_regs.size ()) |
1095 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1096 | ||
1097 | data->arch_regs[regno] = tdesc_arch_reg (reg, NULL); | |
ad068eab | 1098 | |
7cc46491 | 1099 | return 1; |
123dc839 DJ |
1100 | } |
1101 | ||
58d6951d DJ |
1102 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
1103 | register number to it. */ | |
1104 | ||
1105 | int | |
1106 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
1107 | const char *name) | |
1108 | { | |
1109 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1110 | ||
1111 | if (reg == NULL) | |
1112 | return 0; | |
1113 | ||
1114 | return 1; | |
1115 | } | |
1116 | ||
7cc46491 DJ |
1117 | /* Search FEATURE for a register whose name is in NAMES and assign |
1118 | REGNO to it. */ | |
123dc839 DJ |
1119 | |
1120 | int | |
1121 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
1122 | struct tdesc_arch_data *data, | |
1123 | int regno, const char *const names[]) | |
1124 | { | |
1125 | int i; | |
1126 | ||
1127 | for (i = 0; names[i] != NULL; i++) | |
1128 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
1129 | return 1; | |
1130 | ||
1131 | return 0; | |
1132 | } | |
1133 | ||
7cc46491 DJ |
1134 | /* Search FEATURE for a register named NAME, and return its size in |
1135 | bits. The register must exist. */ | |
1136 | ||
1137 | int | |
1138 | tdesc_register_size (const struct tdesc_feature *feature, | |
1139 | const char *name) | |
1140 | { | |
1141 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
1142 | ||
1143 | gdb_assert (reg != NULL); | |
1144 | return reg->bitsize; | |
1145 | } | |
1146 | ||
123dc839 DJ |
1147 | /* Look up a register by its GDB internal register number. */ |
1148 | ||
ad068eab UW |
1149 | static struct tdesc_arch_reg * |
1150 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 1151 | { |
123dc839 DJ |
1152 | struct tdesc_arch_data *data; |
1153 | ||
19ba03f4 | 1154 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
f0cddbef SM |
1155 | if (regno < data->arch_regs.size ()) |
1156 | return &data->arch_regs[regno]; | |
123dc839 DJ |
1157 | else |
1158 | return NULL; | |
1159 | } | |
1160 | ||
ad068eab UW |
1161 | static struct tdesc_reg * |
1162 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
1163 | { | |
1164 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 1165 | |
ad068eab UW |
1166 | return reg? reg->reg : NULL; |
1167 | } | |
1168 | ||
f8b73d13 DJ |
1169 | /* Return the name of register REGNO, from the target description or |
1170 | from an architecture-provided pseudo_register_name method. */ | |
1171 | ||
1172 | const char * | |
d93859e2 | 1173 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 1174 | { |
d93859e2 UW |
1175 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1176 | int num_regs = gdbarch_num_regs (gdbarch); | |
1177 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
1178 | |
1179 | if (reg != NULL) | |
a8142ee1 | 1180 | return reg->name.c_str (); |
123dc839 DJ |
1181 | |
1182 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1183 | { | |
19ba03f4 SM |
1184 | struct tdesc_arch_data *data |
1185 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1186 | |
123dc839 | 1187 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 1188 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
1189 | } |
1190 | ||
1191 | return ""; | |
1192 | } | |
1193 | ||
58d6951d | 1194 | struct type * |
123dc839 DJ |
1195 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
1196 | { | |
ad068eab UW |
1197 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
1198 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
1199 | int num_regs = gdbarch_num_regs (gdbarch); |
1200 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1201 | ||
1202 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1203 | { | |
19ba03f4 SM |
1204 | struct tdesc_arch_data *data |
1205 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1206 | |
123dc839 DJ |
1207 | gdb_assert (data->pseudo_register_type != NULL); |
1208 | return data->pseudo_register_type (gdbarch, regno); | |
1209 | } | |
1210 | ||
1211 | if (reg == NULL) | |
1212 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 1213 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 1214 | |
ad068eab | 1215 | if (arch_reg->type == NULL) |
123dc839 | 1216 | { |
ad068eab UW |
1217 | /* First check for a predefined or target defined type. */ |
1218 | if (reg->tdesc_type) | |
d4a0e8b5 | 1219 | arch_reg->type = reg->tdesc_type->make_gdb_type (gdbarch); |
ad068eab UW |
1220 | |
1221 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 1222 | else if (reg->type == "float") |
ad068eab UW |
1223 | { |
1224 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
1225 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
1226 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
1227 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
1228 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
1229 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
1230 | else | |
1231 | { | |
1232 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1233 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1234 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
1235 | } | |
1236 | } | |
a8142ee1 | 1237 | else if (reg->type == "int") |
ad068eab UW |
1238 | { |
1239 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
1240 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
1241 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
1242 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
1243 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
1244 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
1245 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
1246 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
1247 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
1248 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
1249 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 1250 | /* A bit desperate by this point... */ |
ad068eab UW |
1251 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
1252 | else | |
1253 | { | |
1254 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 1255 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
1256 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
1257 | } | |
1258 | } | |
1259 | ||
1260 | if (arch_reg->type == NULL) | |
1261 | internal_error (__FILE__, __LINE__, | |
1262 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 1263 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 1264 | } |
123dc839 | 1265 | |
ad068eab | 1266 | return arch_reg->type; |
123dc839 DJ |
1267 | } |
1268 | ||
1269 | static int | |
1270 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
1271 | { | |
1272 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
1273 | ||
1274 | if (reg != NULL) | |
1275 | return reg->target_regnum; | |
1276 | else | |
1277 | return -1; | |
1278 | } | |
1279 | ||
1280 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
cef0f868 SH |
1281 | target description may be classified as general, float, vector or other |
1282 | register groups registered with reggroup_add(). Unlike a gdbarch | |
1283 | register_reggroup_p method, this function will return -1 if it does not | |
1284 | know; the caller should handle registers with no specified group. | |
1285 | ||
1286 | The names of containing features are not used. This might be extended | |
1287 | to display registers in some more useful groupings. | |
123dc839 DJ |
1288 | |
1289 | The save-restore flag is also implemented here. */ | |
1290 | ||
f8b73d13 DJ |
1291 | int |
1292 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1293 | struct reggroup *reggroup) | |
123dc839 | 1294 | { |
123dc839 DJ |
1295 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
1296 | ||
cef0f868 SH |
1297 | if (reg != NULL && !reg->group.empty () |
1298 | && (reg->group == reggroup_name (reggroup))) | |
1299 | return 1; | |
123dc839 DJ |
1300 | |
1301 | if (reg != NULL | |
1302 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
1303 | return reg->save_restore; | |
1304 | ||
f8b73d13 DJ |
1305 | return -1; |
1306 | } | |
1307 | ||
1308 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
1309 | group specified go to the default reggroup function and are handled | |
1310 | by type. */ | |
1311 | ||
1312 | static int | |
1313 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1314 | struct reggroup *reggroup) | |
1315 | { | |
1316 | int num_regs = gdbarch_num_regs (gdbarch); | |
1317 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1318 | int ret; | |
1319 | ||
1320 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1321 | { | |
19ba03f4 SM |
1322 | struct tdesc_arch_data *data |
1323 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1324 | |
58d6951d DJ |
1325 | if (data->pseudo_register_reggroup_p != NULL) |
1326 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1327 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1328 | } |
1329 | ||
1330 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1331 | if (ret != -1) | |
1332 | return ret; | |
1333 | ||
123dc839 DJ |
1334 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1335 | } | |
1336 | ||
1337 | /* Record architecture-specific functions to call for pseudo-register | |
1338 | support. */ | |
1339 | ||
1340 | void | |
1341 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1342 | gdbarch_register_name_ftype *pseudo_name) | |
1343 | { | |
19ba03f4 SM |
1344 | struct tdesc_arch_data *data |
1345 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1346 | |
1347 | data->pseudo_register_name = pseudo_name; | |
1348 | } | |
1349 | ||
1350 | void | |
1351 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1352 | gdbarch_register_type_ftype *pseudo_type) | |
1353 | { | |
19ba03f4 SM |
1354 | struct tdesc_arch_data *data |
1355 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1356 | |
1357 | data->pseudo_register_type = pseudo_type; | |
1358 | } | |
1359 | ||
1360 | void | |
1361 | set_tdesc_pseudo_register_reggroup_p | |
1362 | (struct gdbarch *gdbarch, | |
1363 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1364 | { | |
19ba03f4 SM |
1365 | struct tdesc_arch_data *data |
1366 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1367 | |
1368 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1369 | } | |
1370 | ||
1371 | /* Update GDBARCH to use the target description for registers. */ | |
1372 | ||
1373 | void | |
1374 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1375 | const struct target_desc *target_desc, |
123dc839 DJ |
1376 | struct tdesc_arch_data *early_data) |
1377 | { | |
1378 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
1379 | struct tdesc_arch_data *data; |
1380 | htab_t reg_hash; | |
1381 | ||
123dc839 DJ |
1382 | /* We can't use the description for registers if it doesn't describe |
1383 | any. This function should only be called after validating | |
1384 | registers, so the caller should know that registers are | |
1385 | included. */ | |
1386 | gdb_assert (tdesc_has_registers (target_desc)); | |
1387 | ||
19ba03f4 | 1388 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1389 | data->arch_regs = early_data->arch_regs; |
f0cddbef | 1390 | delete early_data; |
123dc839 DJ |
1391 | |
1392 | /* Build up a set of all registers, so that we can assign register | |
1393 | numbers where needed. The hash table expands as necessary, so | |
1394 | the initial size is arbitrary. */ | |
1395 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1396 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1397 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1398 | { |
c9c895b9 | 1399 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1400 | |
c9c895b9 | 1401 | *slot = reg.get (); |
cef0f868 SH |
1402 | /* Add reggroup if its new. */ |
1403 | if (!reg->group.empty ()) | |
1404 | if (reggroup_find (gdbarch, reg->group.c_str ()) == NULL) | |
1405 | reggroup_add (gdbarch, reggroup_gdbarch_new (gdbarch, | |
1406 | reg->group.c_str (), | |
1407 | USER_REGGROUP)); | |
123dc839 DJ |
1408 | } |
1409 | ||
1410 | /* Remove any registers which were assigned numbers by the | |
1411 | architecture. */ | |
f0cddbef SM |
1412 | for (const tdesc_arch_reg &arch_reg : data->arch_regs) |
1413 | if (arch_reg.reg != NULL) | |
1414 | htab_remove_elt (reg_hash, arch_reg.reg); | |
123dc839 DJ |
1415 | |
1416 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1417 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1418 | Iterate over the features, not the hash table, so that the order |
1419 | matches that in the target description. */ | |
1420 | ||
f0cddbef SM |
1421 | gdb_assert (data->arch_regs.size () <= num_regs); |
1422 | while (data->arch_regs.size () < num_regs) | |
1423 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1424 | ||
3eea796c | 1425 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1426 | for (const tdesc_reg_up ® : feature->registers) |
1427 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1428 | { |
f0cddbef | 1429 | data->arch_regs.emplace_back (reg.get (), nullptr); |
123dc839 DJ |
1430 | num_regs++; |
1431 | } | |
1432 | ||
1433 | htab_delete (reg_hash); | |
1434 | ||
1435 | /* Update the architecture. */ | |
1436 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1437 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1438 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1439 | set_gdbarch_remote_register_number (gdbarch, | |
1440 | tdesc_remote_register_number); | |
1441 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1442 | } | |
1443 | \f | |
1444 | ||
f49ff000 YQ |
1445 | /* See arch/tdesc.h. */ |
1446 | ||
123dc839 DJ |
1447 | void |
1448 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
1449 | int regnum, int save_restore, const char *group, | |
1450 | int bitsize, const char *type) | |
1451 | { | |
72ddacb7 YQ |
1452 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, |
1453 | group, bitsize, type); | |
123dc839 | 1454 | |
c9c895b9 | 1455 | feature->registers.emplace_back (reg); |
123dc839 DJ |
1456 | } |
1457 | ||
f49ff000 YQ |
1458 | /* See arch/tdesc.h. */ |
1459 | ||
ad068eab UW |
1460 | struct tdesc_type * |
1461 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
1462 | struct tdesc_type *field_type, int count) | |
1463 | { | |
d4a0e8b5 | 1464 | tdesc_type_vector *type = new tdesc_type_vector (name, field_type, count); |
53c934e9 | 1465 | feature->types.emplace_back (type); |
d4a0e8b5 | 1466 | |
ad068eab UW |
1467 | return type; |
1468 | } | |
1469 | ||
f49ff000 YQ |
1470 | /* See arch/tdesc.h. */ |
1471 | ||
d4a0e8b5 | 1472 | tdesc_type_with_fields * |
f5dff777 DJ |
1473 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) |
1474 | { | |
d4a0e8b5 SM |
1475 | tdesc_type_with_fields *type |
1476 | = new tdesc_type_with_fields (name, TDESC_TYPE_STRUCT); | |
53c934e9 | 1477 | feature->types.emplace_back (type); |
d4a0e8b5 | 1478 | |
f5dff777 DJ |
1479 | return type; |
1480 | } | |
1481 | ||
f49ff000 | 1482 | /* See arch/tdesc.h. */ |
f5dff777 DJ |
1483 | |
1484 | void | |
d4a0e8b5 | 1485 | tdesc_set_struct_size (tdesc_type_with_fields *type, int size) |
f5dff777 DJ |
1486 | { |
1487 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
54157a25 | 1488 | gdb_assert (size > 0); |
d4a0e8b5 | 1489 | type->size = size; |
f5dff777 DJ |
1490 | } |
1491 | ||
f49ff000 YQ |
1492 | /* See arch/tdesc.h. */ |
1493 | ||
d4a0e8b5 | 1494 | tdesc_type_with_fields * |
ad068eab UW |
1495 | tdesc_create_union (struct tdesc_feature *feature, const char *name) |
1496 | { | |
d4a0e8b5 SM |
1497 | tdesc_type_with_fields *type |
1498 | = new tdesc_type_with_fields (name, TDESC_TYPE_UNION); | |
53c934e9 | 1499 | feature->types.emplace_back (type); |
d4a0e8b5 | 1500 | |
ad068eab UW |
1501 | return type; |
1502 | } | |
1503 | ||
f49ff000 YQ |
1504 | /* See arch/tdesc.h. */ |
1505 | ||
d4a0e8b5 | 1506 | tdesc_type_with_fields * |
f5dff777 | 1507 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, |
54157a25 | 1508 | int size) |
f5dff777 | 1509 | { |
54157a25 DE |
1510 | gdb_assert (size > 0); |
1511 | ||
d4a0e8b5 SM |
1512 | tdesc_type_with_fields *type |
1513 | = new tdesc_type_with_fields (name, TDESC_TYPE_FLAGS, size); | |
53c934e9 | 1514 | feature->types.emplace_back (type); |
d4a0e8b5 | 1515 | |
f5dff777 DJ |
1516 | return type; |
1517 | } | |
1518 | ||
d4a0e8b5 | 1519 | tdesc_type_with_fields * |
81516450 DE |
1520 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, |
1521 | int size) | |
1522 | { | |
81516450 DE |
1523 | gdb_assert (size > 0); |
1524 | ||
d4a0e8b5 SM |
1525 | tdesc_type_with_fields *type |
1526 | = new tdesc_type_with_fields (name, TDESC_TYPE_ENUM, size); | |
53c934e9 | 1527 | feature->types.emplace_back (type); |
d4a0e8b5 | 1528 | |
81516450 DE |
1529 | return type; |
1530 | } | |
1531 | ||
f49ff000 | 1532 | /* See arch/tdesc.h. */ |
f5dff777 | 1533 | |
ad068eab | 1534 | void |
d4a0e8b5 | 1535 | tdesc_add_field (tdesc_type_with_fields *type, const char *field_name, |
ad068eab UW |
1536 | struct tdesc_type *field_type) |
1537 | { | |
f5dff777 DJ |
1538 | gdb_assert (type->kind == TDESC_TYPE_UNION |
1539 | || type->kind == TDESC_TYPE_STRUCT); | |
ad068eab | 1540 | |
d05200d1 | 1541 | /* Initialize start and end so we know this is not a bit-field |
81516450 | 1542 | when we print-c-tdesc. */ |
d4a0e8b5 | 1543 | type->fields.emplace_back (field_name, field_type, -1, -1); |
ad068eab UW |
1544 | } |
1545 | ||
f5dff777 | 1546 | void |
d4a0e8b5 | 1547 | tdesc_add_typed_bitfield (tdesc_type_with_fields *type, const char *field_name, |
81516450 | 1548 | int start, int end, struct tdesc_type *field_type) |
f5dff777 | 1549 | { |
81516450 DE |
1550 | gdb_assert (type->kind == TDESC_TYPE_STRUCT |
1551 | || type->kind == TDESC_TYPE_FLAGS); | |
1552 | gdb_assert (start >= 0 && end >= start); | |
f5dff777 | 1553 | |
d4a0e8b5 | 1554 | type->fields.emplace_back (field_name, field_type, start, end); |
f5dff777 DJ |
1555 | } |
1556 | ||
f49ff000 | 1557 | /* See arch/tdesc.h. */ |
81516450 DE |
1558 | |
1559 | void | |
d4a0e8b5 | 1560 | tdesc_add_bitfield (tdesc_type_with_fields *type, const char *field_name, |
81516450 DE |
1561 | int start, int end) |
1562 | { | |
1563 | struct tdesc_type *field_type; | |
1564 | ||
1565 | gdb_assert (start >= 0 && end >= start); | |
1566 | ||
d4a0e8b5 | 1567 | if (type->size > 4) |
81516450 DE |
1568 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); |
1569 | else | |
1570 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
1571 | ||
1572 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
1573 | } | |
1574 | ||
f49ff000 | 1575 | /* See arch/tdesc.h. */ |
81516450 | 1576 | |
f5dff777 | 1577 | void |
d4a0e8b5 | 1578 | tdesc_add_flag (tdesc_type_with_fields *type, int start, |
f5dff777 DJ |
1579 | const char *flag_name) |
1580 | { | |
81516450 DE |
1581 | gdb_assert (type->kind == TDESC_TYPE_FLAGS |
1582 | || type->kind == TDESC_TYPE_STRUCT); | |
f5dff777 | 1583 | |
d4a0e8b5 SM |
1584 | type->fields.emplace_back (flag_name, |
1585 | tdesc_predefined_type (TDESC_TYPE_BOOL), | |
1586 | start, start); | |
81516450 DE |
1587 | } |
1588 | ||
1589 | void | |
d4a0e8b5 | 1590 | tdesc_add_enum_value (tdesc_type_with_fields *type, int value, |
81516450 DE |
1591 | const char *name) |
1592 | { | |
81516450 | 1593 | gdb_assert (type->kind == TDESC_TYPE_ENUM); |
d4a0e8b5 SM |
1594 | type->fields.emplace_back (name, |
1595 | tdesc_predefined_type (TDESC_TYPE_INT32), | |
1596 | value, -1); | |
f5dff777 DJ |
1597 | } |
1598 | ||
f49ff000 YQ |
1599 | /* See arch/tdesc.h. */ |
1600 | ||
123dc839 | 1601 | struct tdesc_feature * |
0abe8a89 YQ |
1602 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1603 | const char *xml) | |
123dc839 | 1604 | { |
72ddacb7 | 1605 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1606 | |
3eea796c SM |
1607 | tdesc->features.emplace_back (new_feature); |
1608 | ||
123dc839 DJ |
1609 | return new_feature; |
1610 | } | |
1611 | ||
424163ea DJ |
1612 | struct target_desc * |
1613 | allocate_target_description (void) | |
1614 | { | |
b468ff4c | 1615 | return new target_desc (); |
424163ea | 1616 | } |
29709017 | 1617 | |
23181151 DJ |
1618 | static void |
1619 | free_target_description (void *arg) | |
1620 | { | |
19ba03f4 | 1621 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1622 | |
b468ff4c | 1623 | delete target_desc; |
23181151 DJ |
1624 | } |
1625 | ||
1626 | struct cleanup * | |
1627 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1628 | { | |
1629 | return make_cleanup (free_target_description, target_desc); | |
1630 | } | |
1631 | ||
e35359c5 UW |
1632 | void |
1633 | tdesc_add_compatible (struct target_desc *target_desc, | |
1634 | const struct bfd_arch_info *compatible) | |
1635 | { | |
e35359c5 UW |
1636 | /* If this instance of GDB is compiled without BFD support for the |
1637 | compatible architecture, simply ignore it -- we would not be able | |
1638 | to handle it anyway. */ | |
1639 | if (compatible == NULL) | |
1640 | return; | |
1641 | ||
40e2a983 | 1642 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1643 | if (compat == compatible) |
1644 | internal_error (__FILE__, __LINE__, | |
1645 | _("Attempted to add duplicate " | |
1646 | "compatible architecture \"%s\""), | |
1647 | compatible->printable_name); | |
1648 | ||
40e2a983 | 1649 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1650 | } |
1651 | ||
29709017 DJ |
1652 | void |
1653 | set_tdesc_property (struct target_desc *target_desc, | |
1654 | const char *key, const char *value) | |
1655 | { | |
29709017 DJ |
1656 | gdb_assert (key != NULL && value != NULL); |
1657 | ||
129c10bc SM |
1658 | if (tdesc_property (target_desc, key) != NULL) |
1659 | internal_error (__FILE__, __LINE__, | |
1660 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1661 | |
129c10bc | 1662 | target_desc->properties.emplace_back (key, value); |
29709017 | 1663 | } |
23181151 | 1664 | |
5f035c07 YQ |
1665 | /* See arch/tdesc.h. */ |
1666 | ||
1667 | void | |
1668 | set_tdesc_architecture (struct target_desc *target_desc, | |
1669 | const char *name) | |
1670 | { | |
1671 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1672 | } | |
1673 | ||
23181151 DJ |
1674 | void |
1675 | set_tdesc_architecture (struct target_desc *target_desc, | |
1676 | const struct bfd_arch_info *arch) | |
1677 | { | |
1678 | target_desc->arch = arch; | |
1679 | } | |
08d16641 | 1680 | |
5f035c07 YQ |
1681 | /* See arch/tdesc.h. */ |
1682 | ||
1683 | void | |
1684 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1685 | { | |
1686 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1687 | } | |
1688 | ||
08d16641 PA |
1689 | void |
1690 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1691 | { | |
1692 | target_desc->osabi = osabi; | |
1693 | } | |
23181151 DJ |
1694 | \f |
1695 | ||
1696 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1697 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1698 | ||
1699 | /* Helper functions for the CLI commands. */ | |
1700 | ||
1701 | static void | |
981a3fb3 | 1702 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1703 | { |
635c7e8a | 1704 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1705 | } |
1706 | ||
1707 | static void | |
981a3fb3 | 1708 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1709 | { |
1710 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1711 | } | |
1712 | ||
1713 | static void | |
981a3fb3 | 1714 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1715 | { |
635c7e8a | 1716 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1717 | } |
1718 | ||
1719 | static void | |
eb4c3f4a | 1720 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1721 | struct cmd_list_element *c) |
1722 | { | |
6ecd4729 PA |
1723 | xfree (target_description_filename); |
1724 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1725 | ||
23181151 DJ |
1726 | target_clear_description (); |
1727 | target_find_description (); | |
1728 | } | |
1729 | ||
1730 | static void | |
1731 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1732 | struct cmd_list_element *c, | |
1733 | const char *value) | |
1734 | { | |
6ecd4729 PA |
1735 | value = target_description_filename; |
1736 | ||
23181151 | 1737 | if (value != NULL && *value != '\0') |
3e43a32a | 1738 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1739 | value); |
1740 | else | |
3e43a32a MS |
1741 | printf_filtered (_("The target description will be " |
1742 | "read from the target.\n")); | |
23181151 DJ |
1743 | } |
1744 | ||
1745 | static void | |
e100df1a | 1746 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1747 | { |
1748 | xfree (target_description_filename); | |
1749 | target_description_filename = NULL; | |
1750 | target_clear_description (); | |
1751 | target_find_description (); | |
1752 | } | |
1753 | ||
6eb1e6a8 YQ |
1754 | /* Print target description in C. */ |
1755 | ||
1756 | class print_c_tdesc : public tdesc_element_visitor | |
1757 | { | |
1758 | public: | |
1759 | print_c_tdesc (std::string &filename_after_features) | |
1760 | : m_filename_after_features (filename_after_features) | |
1761 | { | |
1762 | const char *inp; | |
1763 | char *outp; | |
1764 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1765 | ||
1766 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1767 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1768 | if (*inp == '.') | |
1769 | break; | |
1770 | else if (*inp == '-') | |
1771 | *outp++ = '_'; | |
1772 | else | |
1773 | *outp++ = *inp; | |
1774 | *outp = '\0'; | |
1775 | ||
1776 | /* Standard boilerplate. */ | |
1777 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1778 | "-*- buffer-read-only: t -*- vi" | |
1779 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1780 | } |
1781 | ||
1782 | ~print_c_tdesc () | |
1783 | { | |
1784 | xfree (m_function); | |
1785 | } | |
1786 | ||
1787 | void visit_pre (const target_desc *e) override | |
1788 | { | |
25aa13e5 YQ |
1789 | printf_unfiltered (" Original: %s */\n\n", |
1790 | lbasename (m_filename_after_features.c_str ())); | |
1791 | ||
6eb1e6a8 YQ |
1792 | printf_unfiltered ("#include \"defs.h\"\n"); |
1793 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1794 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1795 | printf_unfiltered ("\n"); | |
1796 | ||
1797 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1798 | printf_unfiltered ("static void\n"); | |
1799 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1800 | printf_unfiltered ("{\n"); | |
1801 | printf_unfiltered | |
1802 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1803 | ||
1804 | if (tdesc_architecture (e) != NULL) | |
1805 | { | |
1806 | printf_unfiltered | |
1807 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1808 | tdesc_architecture (e)->printable_name); | |
1809 | printf_unfiltered ("\n"); | |
1810 | } | |
1811 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1812 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1813 | { | |
1814 | printf_unfiltered | |
1815 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1816 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1817 | printf_unfiltered ("\n"); | |
1818 | } | |
1819 | ||
23a8d186 | 1820 | for (const bfd_arch_info_type *compatible : e->compatible) |
40e2a983 SM |
1821 | printf_unfiltered |
1822 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1823 | compatible->printable_name); | |
6eb1e6a8 | 1824 | |
40e2a983 | 1825 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1826 | printf_unfiltered ("\n"); |
1827 | ||
129c10bc SM |
1828 | for (const property &prop : e->properties) |
1829 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1830 | prop.key.c_str (), prop.value.c_str ()); | |
1831 | ||
6eb1e6a8 YQ |
1832 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1833 | } | |
1834 | ||
25aa13e5 | 1835 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1836 | { |
1837 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1838 | e->name.c_str ()); |
6eb1e6a8 YQ |
1839 | } |
1840 | ||
25aa13e5 YQ |
1841 | void visit_post (const tdesc_feature *e) override |
1842 | {} | |
1843 | ||
6eb1e6a8 YQ |
1844 | void visit_post (const target_desc *e) override |
1845 | { | |
1846 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1847 | printf_unfiltered ("}\n"); | |
1848 | } | |
1849 | ||
d4a0e8b5 SM |
1850 | void visit (const tdesc_type_builtin *type) override |
1851 | { | |
1852 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); | |
1853 | } | |
1854 | ||
1855 | void visit (const tdesc_type_vector *type) override | |
6eb1e6a8 | 1856 | { |
d4a0e8b5 | 1857 | if (!m_printed_element_type) |
6eb1e6a8 | 1858 | { |
d4a0e8b5 SM |
1859 | printf_unfiltered (" tdesc_type *element_type;\n"); |
1860 | m_printed_element_type = true; | |
6eb1e6a8 YQ |
1861 | } |
1862 | ||
d4a0e8b5 SM |
1863 | printf_unfiltered |
1864 | (" element_type = tdesc_named_type (feature, \"%s\");\n", | |
1865 | type->element_type->name.c_str ()); | |
1866 | printf_unfiltered | |
1867 | (" tdesc_create_vector (feature, \"%s\", element_type, %d);\n", | |
1868 | type->name.c_str (), type->count); | |
1869 | ||
1870 | printf_unfiltered ("\n"); | |
1871 | } | |
1872 | ||
1873 | void visit (const tdesc_type_with_fields *type) override | |
1874 | { | |
1875 | if (!m_printed_type_with_fields) | |
6eb1e6a8 | 1876 | { |
d4a0e8b5 SM |
1877 | printf_unfiltered (" tdesc_type_with_fields *type_with_fields;\n"); |
1878 | m_printed_type_with_fields = true; | |
1879 | } | |
1880 | ||
6eb1e6a8 YQ |
1881 | switch (type->kind) |
1882 | { | |
6eb1e6a8 YQ |
1883 | case TDESC_TYPE_STRUCT: |
1884 | case TDESC_TYPE_FLAGS: | |
1885 | if (type->kind == TDESC_TYPE_STRUCT) | |
1886 | { | |
1887 | printf_unfiltered | |
d4a0e8b5 | 1888 | (" type_with_fields = tdesc_create_struct (feature, \"%s\");\n", |
082b9140 | 1889 | type->name.c_str ()); |
d4a0e8b5 | 1890 | if (type->size != 0) |
6eb1e6a8 | 1891 | printf_unfiltered |
d4a0e8b5 | 1892 | (" tdesc_set_struct_size (type_with_fields, %d);\n", type->size); |
6eb1e6a8 YQ |
1893 | } |
1894 | else | |
1895 | { | |
1896 | printf_unfiltered | |
d4a0e8b5 SM |
1897 | (" type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", |
1898 | type->name.c_str (), type->size); | |
6eb1e6a8 | 1899 | } |
d4a0e8b5 | 1900 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 YQ |
1901 | { |
1902 | const char *type_name; | |
1903 | ||
d05200d1 SM |
1904 | gdb_assert (f.type != NULL); |
1905 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1906 | |
1907 | /* To minimize changes to generated files, don't emit type | |
1908 | info for fields that have defaulted types. */ | |
d05200d1 | 1909 | if (f.start != -1) |
6eb1e6a8 | 1910 | { |
d05200d1 SM |
1911 | gdb_assert (f.end != -1); |
1912 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1913 | { |
d05200d1 | 1914 | gdb_assert (f.start == f.end); |
6eb1e6a8 | 1915 | printf_unfiltered |
d4a0e8b5 | 1916 | (" tdesc_add_flag (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1917 | f.start, f.name.c_str ()); |
6eb1e6a8 | 1918 | } |
d4a0e8b5 SM |
1919 | else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) |
1920 | || (type->size == 8 | |
d05200d1 | 1921 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1922 | { |
1923 | printf_unfiltered | |
d4a0e8b5 | 1924 | (" tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", |
d05200d1 | 1925 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1926 | } |
1927 | else | |
1928 | { | |
a8d2e585 SM |
1929 | printf_field_type_assignment |
1930 | ("tdesc_named_type (feature, \"%s\");\n", | |
6eb1e6a8 YQ |
1931 | type_name); |
1932 | printf_unfiltered | |
d4a0e8b5 | 1933 | (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," |
6eb1e6a8 | 1934 | " %d, %d, field_type);\n", |
d05200d1 | 1935 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1936 | } |
1937 | } | |
1938 | else /* Not a bitfield. */ | |
1939 | { | |
d05200d1 | 1940 | gdb_assert (f.end == -1); |
6eb1e6a8 | 1941 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
a8d2e585 SM |
1942 | printf_field_type_assignment |
1943 | ("tdesc_named_type (feature, \"%s\");\n", type_name); | |
6eb1e6a8 | 1944 | printf_unfiltered |
d4a0e8b5 | 1945 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1946 | f.name.c_str ()); |
6eb1e6a8 YQ |
1947 | } |
1948 | } | |
1949 | break; | |
1950 | case TDESC_TYPE_UNION: | |
1951 | printf_unfiltered | |
d4a0e8b5 | 1952 | (" type_with_fields = tdesc_create_union (feature, \"%s\");\n", |
082b9140 | 1953 | type->name.c_str ()); |
d4a0e8b5 | 1954 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 | 1955 | { |
a8d2e585 SM |
1956 | printf_field_type_assignment |
1957 | ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); | |
6eb1e6a8 | 1958 | printf_unfiltered |
d4a0e8b5 | 1959 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1960 | f.name.c_str ()); |
6eb1e6a8 YQ |
1961 | } |
1962 | break; | |
1963 | case TDESC_TYPE_ENUM: | |
1964 | printf_unfiltered | |
d4a0e8b5 SM |
1965 | (" type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", |
1966 | type->name.c_str (), type->size); | |
1967 | for (const tdesc_type_field &f : type->fields) | |
6eb1e6a8 | 1968 | printf_unfiltered |
d4a0e8b5 | 1969 | (" tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1970 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1971 | break; |
1972 | default: | |
082b9140 | 1973 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 | 1974 | } |
d4a0e8b5 | 1975 | |
6eb1e6a8 YQ |
1976 | printf_unfiltered ("\n"); |
1977 | } | |
1978 | ||
1979 | void visit (const tdesc_reg *reg) override | |
1980 | { | |
1981 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1982 | reg->name.c_str (), reg->target_regnum, |
1983 | reg->save_restore); | |
1984 | if (!reg->group.empty ()) | |
1985 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1986 | else |
1987 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1988 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1989 | } |
1990 | ||
25aa13e5 YQ |
1991 | protected: |
1992 | std::string m_filename_after_features; | |
1993 | ||
6eb1e6a8 | 1994 | private: |
a8d2e585 SM |
1995 | |
1996 | /* Print an assignment to the field_type variable. Print the declaration | |
1997 | of field_type if that has not been done yet. */ | |
6e8c24fe | 1998 | ATTRIBUTE_PRINTF (2, 3) |
a8d2e585 SM |
1999 | void printf_field_type_assignment (const char *fmt, ...) |
2000 | { | |
2001 | if (!m_printed_field_type) | |
2002 | { | |
2003 | printf_unfiltered (" tdesc_type *field_type;\n"); | |
2004 | m_printed_field_type = true; | |
2005 | } | |
2006 | ||
2007 | printf_unfiltered (" field_type = "); | |
2008 | ||
2009 | va_list args; | |
2010 | va_start (args, fmt); | |
2011 | vprintf_unfiltered (fmt, args); | |
2012 | va_end (args); | |
2013 | } | |
2014 | ||
6eb1e6a8 | 2015 | char *m_function; |
d4a0e8b5 SM |
2016 | |
2017 | /* Did we print "struct tdesc_type *element_type;" yet? */ | |
2018 | bool m_printed_element_type = false; | |
2019 | ||
2020 | /* Did we print "struct tdesc_type_with_fields *element_type;" yet? */ | |
2021 | bool m_printed_type_with_fields = false; | |
2022 | ||
2023 | /* Did we print "struct tdesc_type *field_type;" yet? */ | |
6eb1e6a8 | 2024 | bool m_printed_field_type = false; |
6eb1e6a8 YQ |
2025 | }; |
2026 | ||
25aa13e5 YQ |
2027 | /* Print target description feature in C. */ |
2028 | ||
2029 | class print_c_feature : public print_c_tdesc | |
2030 | { | |
2031 | public: | |
2032 | print_c_feature (std::string &file) | |
2033 | : print_c_tdesc (file) | |
2034 | { | |
2035 | /* Trim ".tmp". */ | |
2036 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
2037 | ||
2038 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
2039 | } | |
2040 | ||
2041 | void visit_pre (const target_desc *e) override | |
2042 | { | |
2043 | printf_unfiltered (" Original: %s */\n\n", | |
2044 | lbasename (m_filename_after_features.c_str ())); | |
2045 | ||
f49ff000 | 2046 | printf_unfiltered ("#include \"arch/tdesc.h\"\n"); |
25aa13e5 YQ |
2047 | printf_unfiltered ("\n"); |
2048 | } | |
2049 | ||
2050 | void visit_post (const target_desc *e) override | |
2051 | {} | |
2052 | ||
2053 | void visit_pre (const tdesc_feature *e) override | |
2054 | { | |
2055 | std::string name (m_filename_after_features); | |
2056 | ||
2057 | auto pos = name.find_first_of ('.'); | |
2058 | ||
2059 | name = name.substr (0, pos); | |
2060 | std::replace (name.begin (), name.end (), '/', '_'); | |
2061 | std::replace (name.begin (), name.end (), '-', '_'); | |
2062 | ||
2063 | printf_unfiltered ("static int\n"); | |
2064 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
2065 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
2066 | ||
2067 | printf_unfiltered ("{\n"); | |
2068 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
2069 | |
2070 | printf_unfiltered | |
2071 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 2072 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
2073 | } |
2074 | ||
2075 | void visit_post (const tdesc_feature *e) override | |
2076 | { | |
2077 | printf_unfiltered (" return regnum;\n"); | |
2078 | printf_unfiltered ("}\n"); | |
2079 | } | |
2080 | ||
2081 | void visit (const tdesc_reg *reg) override | |
2082 | { | |
ea03d0d3 YQ |
2083 | /* Most "reg" in XML target descriptions don't have "regnum" |
2084 | attribute, so the register number is allocated sequentially. | |
2085 | In case that reg has "regnum" attribute, register number | |
2086 | should be set by that explicitly. */ | |
2087 | ||
2088 | if (reg->target_regnum < m_next_regnum) | |
2089 | { | |
2090 | /* The integrity check, it can catch some errors on register | |
2091 | number collision, like this, | |
2092 | ||
2093 | <reg name="x0" bitsize="32"/> | |
2094 | <reg name="x1" bitsize="32"/> | |
2095 | <reg name="x2" bitsize="32"/> | |
2096 | <reg name="x3" bitsize="32"/> | |
2097 | <reg name="ps" bitsize="32" regnum="3"/> | |
2098 | ||
2099 | but it also has false negatives. The target description | |
2100 | below is correct, | |
2101 | ||
2102 | <reg name="x1" bitsize="32" regnum="1"/> | |
2103 | <reg name="x3" bitsize="32" regnum="3"/> | |
2104 | <reg name="x2" bitsize="32" regnum="2"/> | |
2105 | <reg name="x4" bitsize="32" regnum="4"/> | |
2106 | ||
2107 | but it is not a good practice, so still error on this, | |
2108 | and also print the message so that it can be saved in the | |
2109 | generated c file. */ | |
2110 | ||
2111 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
2112 | reg->target_regnum); | |
2113 | printf_unfiltered ("is not the largest number (%d).\n", | |
2114 | m_next_regnum); | |
2115 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
2116 | reg->target_regnum, m_next_regnum); | |
2117 | } | |
2118 | ||
2119 | if (reg->target_regnum > m_next_regnum) | |
2120 | { | |
2121 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
2122 | m_next_regnum = reg->target_regnum; | |
2123 | } | |
2124 | ||
25aa13e5 | 2125 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
2126 | reg->name.c_str (), reg->save_restore); |
2127 | if (!reg->group.empty ()) | |
2128 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
2129 | else |
2130 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 2131 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
2132 | |
2133 | m_next_regnum++; | |
25aa13e5 YQ |
2134 | } |
2135 | ||
ea03d0d3 YQ |
2136 | private: |
2137 | /* The register number to use for the next register we see. */ | |
2138 | int m_next_regnum = 0; | |
25aa13e5 YQ |
2139 | }; |
2140 | ||
81adfced | 2141 | static void |
e100df1a | 2142 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
2143 | { |
2144 | const struct target_desc *tdesc; | |
6eb1e6a8 | 2145 | const char *filename; |
81adfced | 2146 | |
8e2141c6 YQ |
2147 | if (args == NULL) |
2148 | { | |
2149 | /* Use the global target-supplied description, not the current | |
2150 | architecture's. This lets a GDB for one architecture generate C | |
2151 | for another architecture's description, even though the gdbarch | |
2152 | initialization code will reject the new description. */ | |
2153 | tdesc = current_target_desc; | |
2154 | filename = target_description_filename; | |
2155 | } | |
2156 | else | |
2157 | { | |
2158 | /* Use the target description from the XML file. */ | |
2159 | filename = args; | |
2160 | tdesc = file_read_description_xml (filename); | |
2161 | } | |
2162 | ||
81adfced DJ |
2163 | if (tdesc == NULL) |
2164 | error (_("There is no target description to print.")); | |
2165 | ||
8e2141c6 | 2166 | if (filename == NULL) |
81adfced DJ |
2167 | error (_("The current target description did not come from an XML file.")); |
2168 | ||
6eb1e6a8 YQ |
2169 | std::string filename_after_features (filename); |
2170 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 2171 | |
6eb1e6a8 YQ |
2172 | if (loc != std::string::npos) |
2173 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 2174 | |
25aa13e5 YQ |
2175 | /* Print c files for target features instead of target descriptions, |
2176 | because c files got from target features are more flexible than the | |
2177 | counterparts. */ | |
6c73f67f YQ |
2178 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
2179 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 2180 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
2181 | || startswith (filename_after_features.c_str (), "tic6x-") |
2182 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
2183 | { |
2184 | print_c_feature v (filename_after_features); | |
81adfced | 2185 | |
25aa13e5 YQ |
2186 | tdesc->accept (v); |
2187 | } | |
2188 | else | |
2189 | { | |
2190 | print_c_tdesc v (filename_after_features); | |
2191 | ||
2192 | tdesc->accept (v); | |
2193 | } | |
81adfced DJ |
2194 | } |
2195 | ||
27d41eac YQ |
2196 | namespace selftests { |
2197 | ||
2198 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
2199 | ||
2200 | #if GDB_SELF_TEST | |
2201 | ||
2202 | /* See target-descritpions.h. */ | |
2203 | ||
2204 | void | |
2205 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
2206 | { | |
2207 | xml_tdesc.emplace_back (xml_file, tdesc); | |
2208 | } | |
2209 | #endif | |
2210 | ||
2211 | } | |
2212 | ||
2213 | /* Check that the target descriptions created dynamically by | |
2214 | architecture-specific code equal the descriptions created from XML files | |
2215 | found in the specified directory DIR. */ | |
2216 | ||
2217 | static void | |
e100df1a | 2218 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
2219 | { |
2220 | if (dir == NULL) | |
2221 | error (_("Missing dir name")); | |
2222 | ||
2223 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
2224 | std::string feature_dir (dir1.get ()); | |
2225 | unsigned int failed = 0; | |
2226 | ||
2227 | for (auto const &e : selftests::xml_tdesc) | |
2228 | { | |
2229 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
2230 | const target_desc *tdesc | |
2231 | = file_read_description_xml (tdesc_xml.data ()); | |
2232 | ||
2233 | if (tdesc == NULL || *tdesc != *e.second) | |
2234 | failed++; | |
2235 | } | |
2236 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
2237 | (long) selftests::xml_tdesc.size (), failed); | |
2238 | } | |
2239 | ||
23181151 DJ |
2240 | void |
2241 | _initialize_target_descriptions (void) | |
2242 | { | |
123dc839 DJ |
2243 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
2244 | ||
23181151 DJ |
2245 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
2246 | Set target description specific variables."), | |
2247 | &tdesc_set_cmdlist, "set tdesc ", | |
2248 | 0 /* allow-unknown */, &setlist); | |
2249 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
2250 | Show target description specific variables."), | |
2251 | &tdesc_show_cmdlist, "show tdesc ", | |
2252 | 0 /* allow-unknown */, &showlist); | |
2253 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
2254 | Unset target description specific variables."), | |
2255 | &tdesc_unset_cmdlist, "unset tdesc ", | |
2256 | 0 /* allow-unknown */, &unsetlist); | |
2257 | ||
2258 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 2259 | &tdesc_filename_cmd_string, |
23181151 DJ |
2260 | _("\ |
2261 | Set the file to read for an XML target description"), _("\ | |
2262 | Show the file to read for an XML target description"), _("\ | |
2263 | When set, GDB will read the target description from a local\n\ | |
2264 | file instead of querying the remote target."), | |
2265 | set_tdesc_filename_cmd, | |
2266 | show_tdesc_filename_cmd, | |
2267 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
2268 | ||
2269 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
2270 | Unset the file to read for an XML target description. When unset,\n\ | |
2271 | GDB will read the description from the target."), | |
2272 | &tdesc_unset_cmdlist); | |
81adfced DJ |
2273 | |
2274 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
2275 | Print the current target description as a C source file."), | |
2276 | &maintenanceprintlist); | |
27d41eac YQ |
2277 | |
2278 | cmd_list_element *cmd; | |
2279 | ||
2280 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
2281 | maintenance_check_xml_descriptions, _("\ | |
2282 | Check the target descriptions created in GDB equal the descriptions\n\ | |
2283 | created from XML files in the directory.\n\ | |
2284 | The parameter is the directory name."), | |
2285 | &maintenancechecklist); | |
2286 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 2287 | } |