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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
42a4f53d | 3 | Copyright (C) 2006-2019 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" | |
268a13a5 | 29 | #include "gdbsupport/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 DJ |
40 | |
41 | /* Types. */ | |
42 | ||
129c10bc | 43 | struct property |
29709017 | 44 | { |
129c10bc SM |
45 | property (const std::string &key_, const std::string &value_) |
46 | : key (key_), value (value_) | |
47 | {} | |
48 | ||
49 | std::string key; | |
50 | std::string value; | |
51 | }; | |
29709017 | 52 | |
b8df6ca7 AH |
53 | /* Convert a tdesc_type to a gdb type. */ |
54 | ||
55 | static type * | |
56 | make_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *ttype) | |
57 | { | |
58 | class gdb_type_creator : public tdesc_element_visitor | |
27d41eac | 59 | { |
b8df6ca7 AH |
60 | public: |
61 | gdb_type_creator (struct gdbarch *gdbarch) | |
62 | : m_gdbarch (gdbarch) | |
63 | {} | |
d4a0e8b5 | 64 | |
b8df6ca7 AH |
65 | type *get_type () |
66 | { | |
67 | return m_type; | |
68 | } | |
d4a0e8b5 | 69 | |
b8df6ca7 AH |
70 | void visit (const tdesc_type_builtin *e) override |
71 | { | |
72 | switch (e->kind) | |
73 | { | |
74 | /* Predefined types. */ | |
75 | case TDESC_TYPE_BOOL: | |
76 | m_type = builtin_type (m_gdbarch)->builtin_bool; | |
77 | return; | |
78 | case TDESC_TYPE_INT8: | |
79 | m_type = builtin_type (m_gdbarch)->builtin_int8; | |
80 | return; | |
81 | case TDESC_TYPE_INT16: | |
82 | m_type = builtin_type (m_gdbarch)->builtin_int16; | |
83 | return; | |
84 | case TDESC_TYPE_INT32: | |
85 | m_type = builtin_type (m_gdbarch)->builtin_int32; | |
86 | return; | |
87 | case TDESC_TYPE_INT64: | |
88 | m_type = builtin_type (m_gdbarch)->builtin_int64; | |
89 | return; | |
90 | case TDESC_TYPE_INT128: | |
91 | m_type = builtin_type (m_gdbarch)->builtin_int128; | |
92 | return; | |
93 | case TDESC_TYPE_UINT8: | |
94 | m_type = builtin_type (m_gdbarch)->builtin_uint8; | |
95 | return; | |
96 | case TDESC_TYPE_UINT16: | |
97 | m_type = builtin_type (m_gdbarch)->builtin_uint16; | |
98 | return; | |
99 | case TDESC_TYPE_UINT32: | |
100 | m_type = builtin_type (m_gdbarch)->builtin_uint32; | |
101 | return; | |
102 | case TDESC_TYPE_UINT64: | |
103 | m_type = builtin_type (m_gdbarch)->builtin_uint64; | |
104 | return; | |
105 | case TDESC_TYPE_UINT128: | |
106 | m_type = builtin_type (m_gdbarch)->builtin_uint128; | |
107 | return; | |
108 | case TDESC_TYPE_CODE_PTR: | |
109 | m_type = builtin_type (m_gdbarch)->builtin_func_ptr; | |
110 | return; | |
111 | case TDESC_TYPE_DATA_PTR: | |
112 | m_type = builtin_type (m_gdbarch)->builtin_data_ptr; | |
113 | return; | |
114 | } | |
d4a0e8b5 | 115 | |
b8df6ca7 AH |
116 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); |
117 | if (m_type != NULL) | |
118 | return; | |
27d41eac | 119 | |
b8df6ca7 AH |
120 | switch (e->kind) |
121 | { | |
a6d0f249 AH |
122 | case TDESC_TYPE_IEEE_HALF: |
123 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_half", | |
124 | floatformats_ieee_half); | |
125 | return; | |
126 | ||
b8df6ca7 AH |
127 | case TDESC_TYPE_IEEE_SINGLE: |
128 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_single", | |
129 | floatformats_ieee_single); | |
130 | return; | |
131 | ||
132 | case TDESC_TYPE_IEEE_DOUBLE: | |
133 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_double", | |
134 | floatformats_ieee_double); | |
135 | return; | |
136 | case TDESC_TYPE_ARM_FPA_EXT: | |
137 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_arm_ext", | |
138 | floatformats_arm_ext); | |
139 | return; | |
140 | ||
141 | case TDESC_TYPE_I387_EXT: | |
142 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_i387_ext", | |
143 | floatformats_i387_ext); | |
144 | return; | |
145 | } | |
d4a0e8b5 | 146 | |
b8df6ca7 AH |
147 | internal_error (__FILE__, __LINE__, |
148 | "Type \"%s\" has an unknown kind %d", | |
149 | e->name.c_str (), e->kind); | |
150 | } | |
d4a0e8b5 | 151 | |
b8df6ca7 AH |
152 | void visit (const tdesc_type_vector *e) override |
153 | { | |
154 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); | |
155 | if (m_type != NULL) | |
156 | return; | |
157 | ||
158 | type *element_gdb_type = make_gdb_type (m_gdbarch, e->element_type); | |
159 | m_type = init_vector_type (element_gdb_type, e->count); | |
160 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
161 | return; | |
162 | } | |
53c934e9 | 163 | |
b8df6ca7 AH |
164 | void visit (const tdesc_type_with_fields *e) override |
165 | { | |
166 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); | |
167 | if (m_type != NULL) | |
168 | return; | |
d4a0e8b5 | 169 | |
b8df6ca7 AH |
170 | switch (e->kind) |
171 | { | |
172 | case TDESC_TYPE_STRUCT: | |
173 | make_gdb_type_struct (e); | |
174 | return; | |
175 | case TDESC_TYPE_UNION: | |
176 | make_gdb_type_union (e); | |
177 | return; | |
178 | case TDESC_TYPE_FLAGS: | |
179 | make_gdb_type_flags (e); | |
180 | return; | |
181 | case TDESC_TYPE_ENUM: | |
182 | make_gdb_type_enum (e); | |
183 | return; | |
184 | } | |
d4a0e8b5 | 185 | |
b8df6ca7 AH |
186 | internal_error (__FILE__, __LINE__, |
187 | "Type \"%s\" has an unknown kind %d", | |
188 | e->name.c_str (), e->kind); | |
189 | } | |
d4a0e8b5 | 190 | |
b8df6ca7 | 191 | private: |
d4a0e8b5 | 192 | |
b8df6ca7 AH |
193 | void make_gdb_type_struct (const tdesc_type_with_fields *e) |
194 | { | |
195 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_STRUCT); | |
196 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
d4a0e8b5 | 197 | |
b8df6ca7 AH |
198 | for (const tdesc_type_field &f : e->fields) |
199 | { | |
200 | if (f.start != -1 && f.end != -1) | |
201 | { | |
202 | /* Bitfield. */ | |
203 | struct field *fld; | |
204 | struct type *field_gdb_type; | |
205 | int bitsize, total_size; | |
206 | ||
207 | /* This invariant should be preserved while creating types. */ | |
208 | gdb_assert (e->size != 0); | |
209 | if (f.type != NULL) | |
210 | field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
211 | else if (e->size > 4) | |
212 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint64; | |
213 | else | |
214 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint32; | |
215 | ||
216 | fld = append_composite_type_field_raw | |
217 | (m_type, xstrdup (f.name.c_str ()), field_gdb_type); | |
218 | ||
219 | /* For little-endian, BITPOS counts from the LSB of | |
220 | the structure and marks the LSB of the field. For | |
221 | big-endian, BITPOS counts from the MSB of the | |
222 | structure and marks the MSB of the field. Either | |
223 | way, it is the number of bits to the "left" of the | |
224 | field. To calculate this in big-endian, we need | |
225 | the total size of the structure. */ | |
226 | bitsize = f.end - f.start + 1; | |
227 | total_size = e->size * TARGET_CHAR_BIT; | |
228 | if (gdbarch_bits_big_endian (m_gdbarch)) | |
229 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); | |
230 | else | |
231 | SET_FIELD_BITPOS (fld[0], f.start); | |
232 | FIELD_BITSIZE (fld[0]) = bitsize; | |
233 | } | |
234 | else | |
235 | { | |
236 | gdb_assert (f.start == -1 && f.end == -1); | |
237 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
238 | append_composite_type_field (m_type, | |
d4a0e8b5 | 239 | xstrdup (f.name.c_str ()), |
b8df6ca7 AH |
240 | field_gdb_type); |
241 | } | |
242 | } | |
d4a0e8b5 | 243 | |
b8df6ca7 AH |
244 | if (e->size != 0) |
245 | TYPE_LENGTH (m_type) = e->size; | |
246 | } | |
d4a0e8b5 | 247 | |
b8df6ca7 AH |
248 | void make_gdb_type_union (const tdesc_type_with_fields *e) |
249 | { | |
250 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_UNION); | |
251 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
d4a0e8b5 | 252 | |
b8df6ca7 AH |
253 | for (const tdesc_type_field &f : e->fields) |
254 | { | |
255 | type* field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
256 | append_composite_type_field (m_type, xstrdup (f.name.c_str ()), | |
257 | field_gdb_type); | |
258 | ||
259 | /* If any of the children of a union are vectors, flag the | |
260 | union as a vector also. This allows e.g. a union of two | |
261 | vector types to show up automatically in "info vector". */ | |
262 | if (TYPE_VECTOR (field_gdb_type)) | |
263 | TYPE_VECTOR (m_type) = 1; | |
264 | } | |
265 | } | |
d4a0e8b5 | 266 | |
b8df6ca7 | 267 | void make_gdb_type_flags (const tdesc_type_with_fields *e) |
d4a0e8b5 | 268 | { |
b8df6ca7 AH |
269 | m_type = arch_flags_type (m_gdbarch, e->name.c_str (), |
270 | e->size * TARGET_CHAR_BIT); | |
271 | ||
272 | for (const tdesc_type_field &f : e->fields) | |
273 | { | |
274 | int bitsize = f.end - f.start + 1; | |
275 | ||
276 | gdb_assert (f.type != NULL); | |
277 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
278 | append_flags_type_field (m_type, f.start, bitsize, | |
279 | field_gdb_type, f.name.c_str ()); | |
280 | } | |
d4a0e8b5 SM |
281 | } |
282 | ||
b8df6ca7 AH |
283 | void make_gdb_type_enum (const tdesc_type_with_fields *e) |
284 | { | |
285 | m_type = arch_type (m_gdbarch, TYPE_CODE_ENUM, e->size * TARGET_CHAR_BIT, | |
286 | e->name.c_str ()); | |
d4a0e8b5 | 287 | |
b8df6ca7 AH |
288 | TYPE_UNSIGNED (m_type) = 1; |
289 | for (const tdesc_type_field &f : e->fields) | |
290 | { | |
291 | struct field *fld | |
292 | = append_composite_type_field_raw (m_type, | |
293 | xstrdup (f.name.c_str ()), | |
294 | NULL); | |
d4a0e8b5 | 295 | |
b8df6ca7 AH |
296 | SET_FIELD_BITPOS (fld[0], f.start); |
297 | } | |
298 | } | |
299 | ||
300 | /* The gdbarch used. */ | |
301 | struct gdbarch *m_gdbarch; | |
302 | ||
303 | /* The type created. */ | |
304 | type *m_type; | |
305 | }; | |
306 | ||
307 | gdb_type_creator gdb_type (gdbarch); | |
308 | ttype->accept (gdb_type); | |
309 | return gdb_type.get_type (); | |
310 | } | |
123dc839 | 311 | |
123dc839 DJ |
312 | /* A target description. */ |
313 | ||
6eb1e6a8 | 314 | struct target_desc : tdesc_element |
424163ea | 315 | { |
b468ff4c YQ |
316 | target_desc () |
317 | {} | |
318 | ||
3eea796c | 319 | virtual ~target_desc () = default; |
b468ff4c YQ |
320 | |
321 | target_desc (const target_desc &) = delete; | |
322 | void operator= (const target_desc &) = delete; | |
323 | ||
23181151 | 324 | /* The architecture reported by the target, if any. */ |
b468ff4c | 325 | const struct bfd_arch_info *arch = NULL; |
23181151 | 326 | |
08d16641 PA |
327 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
328 | otherwise. */ | |
b468ff4c | 329 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 330 | |
e35359c5 | 331 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 332 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 333 | |
29709017 | 334 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 335 | std::vector<property> properties; |
123dc839 DJ |
336 | |
337 | /* The features associated with this target. */ | |
858c9d13 | 338 | std::vector<tdesc_feature_up> features; |
6eb1e6a8 | 339 | |
e98577a9 AH |
340 | /* Used to cache the generated xml version of the target description. */ |
341 | mutable char *xmltarget = nullptr; | |
342 | ||
6eb1e6a8 YQ |
343 | void accept (tdesc_element_visitor &v) const override |
344 | { | |
345 | v.visit_pre (this); | |
346 | ||
3eea796c | 347 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
348 | feature->accept (v); |
349 | ||
350 | v.visit_post (this); | |
351 | } | |
27d41eac YQ |
352 | |
353 | bool operator== (const target_desc &other) const | |
354 | { | |
355 | if (arch != other.arch) | |
356 | return false; | |
357 | ||
358 | if (osabi != other.osabi) | |
359 | return false; | |
360 | ||
3eea796c | 361 | if (features.size () != other.features.size ()) |
27d41eac YQ |
362 | return false; |
363 | ||
3eea796c | 364 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 365 | { |
3eea796c SM |
366 | const tdesc_feature_up &feature1 = features[ix]; |
367 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 368 | |
3eea796c | 369 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
370 | return false; |
371 | } | |
372 | ||
373 | return true; | |
374 | } | |
375 | ||
376 | bool operator!= (const target_desc &other) const | |
377 | { | |
378 | return !(*this == other); | |
379 | } | |
123dc839 DJ |
380 | }; |
381 | ||
382 | /* Per-architecture data associated with a target description. The | |
383 | target description may be shared by multiple architectures, but | |
384 | this data is private to one gdbarch. */ | |
385 | ||
f0cddbef | 386 | struct tdesc_arch_reg |
ad068eab | 387 | { |
f0cddbef SM |
388 | tdesc_arch_reg (tdesc_reg *reg_, struct type *type_) |
389 | : reg (reg_), type (type_) | |
390 | {} | |
391 | ||
ad068eab UW |
392 | struct tdesc_reg *reg; |
393 | struct type *type; | |
f0cddbef | 394 | }; |
ad068eab | 395 | |
123dc839 DJ |
396 | struct tdesc_arch_data |
397 | { | |
ad068eab | 398 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
399 | During initialization of the gdbarch this list is used to store |
400 | registers which the architecture assigns a fixed register number. | |
401 | Registers which are NULL in this array, or off the end, are | |
402 | treated as zero-sized and nameless (i.e. placeholders in the | |
403 | numbering). */ | |
f0cddbef | 404 | std::vector<tdesc_arch_reg> arch_regs; |
123dc839 DJ |
405 | |
406 | /* Functions which report the register name, type, and reggroups for | |
407 | pseudo-registers. */ | |
f0cddbef SM |
408 | gdbarch_register_name_ftype *pseudo_register_name = NULL; |
409 | gdbarch_register_type_ftype *pseudo_register_type = NULL; | |
410 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p = NULL; | |
424163ea DJ |
411 | }; |
412 | ||
6ecd4729 PA |
413 | /* Info about an inferior's target description. There's one of these |
414 | for each inferior. */ | |
424163ea | 415 | |
6ecd4729 PA |
416 | struct target_desc_info |
417 | { | |
418 | /* A flag indicating that a description has already been fetched | |
419 | from the target, so it should not be queried again. */ | |
420 | ||
421 | int fetched; | |
424163ea | 422 | |
6ecd4729 PA |
423 | /* The description fetched from the target, or NULL if the target |
424 | did not supply any description. Only valid when | |
425 | target_desc_fetched is set. Only the description initialization | |
426 | code should access this; normally, the description should be | |
427 | accessed through the gdbarch object. */ | |
424163ea | 428 | |
6ecd4729 | 429 | const struct target_desc *tdesc; |
424163ea | 430 | |
6ecd4729 PA |
431 | /* The filename to read a target description from, as set by "set |
432 | tdesc filename ..." */ | |
424163ea | 433 | |
6ecd4729 PA |
434 | char *filename; |
435 | }; | |
23181151 | 436 | |
6ecd4729 PA |
437 | /* Get the inferior INF's target description info, allocating one on |
438 | the stop if necessary. */ | |
23181151 | 439 | |
6ecd4729 PA |
440 | static struct target_desc_info * |
441 | get_tdesc_info (struct inferior *inf) | |
442 | { | |
443 | if (inf->tdesc_info == NULL) | |
444 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
445 | return inf->tdesc_info; | |
446 | } | |
23181151 | 447 | |
123dc839 DJ |
448 | /* A handle for architecture-specific data associated with the |
449 | target description (see struct tdesc_arch_data). */ | |
450 | ||
451 | static struct gdbarch_data *tdesc_data; | |
452 | ||
6ecd4729 PA |
453 | /* See target-descriptions.h. */ |
454 | ||
455 | int | |
456 | target_desc_info_from_user_p (struct target_desc_info *info) | |
457 | { | |
458 | return info != NULL && info->filename != NULL; | |
459 | } | |
460 | ||
461 | /* See target-descriptions.h. */ | |
462 | ||
463 | void | |
464 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
465 | { | |
466 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
467 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
468 | ||
469 | dest->fetched = src->fetched; | |
470 | dest->tdesc = src->tdesc; | |
471 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
472 | } | |
473 | ||
474 | /* See target-descriptions.h. */ | |
475 | ||
476 | void | |
477 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
478 | { | |
479 | if (tdesc_info != NULL) | |
480 | { | |
481 | xfree (tdesc_info->filename); | |
482 | xfree (tdesc_info); | |
483 | } | |
484 | } | |
485 | ||
486 | /* Convenience helper macros. */ | |
487 | ||
488 | #define target_desc_fetched \ | |
489 | get_tdesc_info (current_inferior ())->fetched | |
490 | #define current_target_desc \ | |
491 | get_tdesc_info (current_inferior ())->tdesc | |
492 | #define target_description_filename \ | |
493 | get_tdesc_info (current_inferior ())->filename | |
494 | ||
495 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
496 | ||
497 | static char *tdesc_filename_cmd_string; | |
498 | ||
424163ea DJ |
499 | /* Fetch the current target's description, and switch the current |
500 | architecture to one which incorporates that description. */ | |
501 | ||
502 | void | |
503 | target_find_description (void) | |
504 | { | |
505 | /* If we've already fetched a description from the target, don't do | |
506 | it again. This allows a target to fetch the description early, | |
507 | during its to_open or to_create_inferior, if it needs extra | |
508 | information about the target to initialize. */ | |
509 | if (target_desc_fetched) | |
510 | return; | |
511 | ||
512 | /* The current architecture should not have any target description | |
513 | specified. It should have been cleared, e.g. when we | |
514 | disconnected from the previous target. */ | |
f5656ead | 515 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 516 | |
23181151 DJ |
517 | /* First try to fetch an XML description from the user-specified |
518 | file. */ | |
519 | current_target_desc = NULL; | |
520 | if (target_description_filename != NULL | |
521 | && *target_description_filename != '\0') | |
522 | current_target_desc | |
523 | = file_read_description_xml (target_description_filename); | |
524 | ||
525 | /* Next try to read the description from the current target using | |
526 | target objects. */ | |
527 | if (current_target_desc == NULL) | |
8b88a78e | 528 | current_target_desc = target_read_description_xml (current_top_target ()); |
23181151 DJ |
529 | |
530 | /* If that failed try a target-specific hook. */ | |
531 | if (current_target_desc == NULL) | |
8b88a78e | 532 | current_target_desc = target_read_description (current_top_target ()); |
424163ea DJ |
533 | |
534 | /* If a non-NULL description was returned, then update the current | |
535 | architecture. */ | |
536 | if (current_target_desc) | |
537 | { | |
538 | struct gdbarch_info info; | |
539 | ||
540 | gdbarch_info_init (&info); | |
541 | info.target_desc = current_target_desc; | |
542 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
543 | warning (_("Architecture rejected target-supplied description")); |
544 | else | |
545 | { | |
546 | struct tdesc_arch_data *data; | |
547 | ||
19ba03f4 SM |
548 | data = ((struct tdesc_arch_data *) |
549 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 550 | if (tdesc_has_registers (current_target_desc) |
f0cddbef | 551 | && data->arch_regs.empty ()) |
123dc839 DJ |
552 | warning (_("Target-supplied registers are not supported " |
553 | "by the current architecture")); | |
554 | } | |
424163ea DJ |
555 | } |
556 | ||
557 | /* Now that we know this description is usable, record that we | |
558 | fetched it. */ | |
559 | target_desc_fetched = 1; | |
560 | } | |
561 | ||
562 | /* Discard any description fetched from the current target, and switch | |
563 | the current architecture to one with no target description. */ | |
564 | ||
565 | void | |
566 | target_clear_description (void) | |
567 | { | |
568 | struct gdbarch_info info; | |
569 | ||
570 | if (!target_desc_fetched) | |
571 | return; | |
572 | ||
573 | target_desc_fetched = 0; | |
574 | current_target_desc = NULL; | |
575 | ||
576 | gdbarch_info_init (&info); | |
577 | if (!gdbarch_update_p (info)) | |
578 | internal_error (__FILE__, __LINE__, | |
579 | _("Could not remove target-supplied description")); | |
580 | } | |
581 | ||
582 | /* Return the global current target description. This should only be | |
583 | used by gdbarch initialization code; most access should be through | |
584 | an existing gdbarch. */ | |
585 | ||
586 | const struct target_desc * | |
587 | target_current_description (void) | |
588 | { | |
589 | if (target_desc_fetched) | |
590 | return current_target_desc; | |
591 | ||
592 | return NULL; | |
593 | } | |
e35359c5 UW |
594 | |
595 | /* Return non-zero if this target description is compatible | |
596 | with the given BFD architecture. */ | |
597 | ||
598 | int | |
599 | tdesc_compatible_p (const struct target_desc *target_desc, | |
600 | const struct bfd_arch_info *arch) | |
601 | { | |
40e2a983 | 602 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
603 | { |
604 | if (compat == arch | |
605 | || arch->compatible (arch, compat) | |
606 | || compat->compatible (compat, arch)) | |
607 | return 1; | |
608 | } | |
609 | ||
610 | return 0; | |
611 | } | |
23181151 DJ |
612 | \f |
613 | ||
123dc839 | 614 | /* Direct accessors for target descriptions. */ |
424163ea | 615 | |
29709017 DJ |
616 | /* Return the string value of a property named KEY, or NULL if the |
617 | property was not specified. */ | |
618 | ||
619 | const char * | |
620 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
621 | { | |
129c10bc SM |
622 | for (const property &prop : target_desc->properties) |
623 | if (prop.key == key) | |
624 | return prop.value.c_str (); | |
29709017 DJ |
625 | |
626 | return NULL; | |
627 | } | |
628 | ||
23181151 DJ |
629 | /* Return the BFD architecture associated with this target |
630 | description, or NULL if no architecture was specified. */ | |
631 | ||
632 | const struct bfd_arch_info * | |
633 | tdesc_architecture (const struct target_desc *target_desc) | |
634 | { | |
635 | return target_desc->arch; | |
636 | } | |
08d16641 | 637 | |
268a13a5 | 638 | /* See gdbsupport/tdesc.h. */ |
d278f585 AH |
639 | |
640 | const char * | |
641 | tdesc_architecture_name (const struct target_desc *target_desc) | |
642 | { | |
643 | return target_desc->arch->printable_name; | |
644 | } | |
645 | ||
08d16641 PA |
646 | /* Return the OSABI associated with this target description, or |
647 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
648 | ||
649 | enum gdb_osabi | |
650 | tdesc_osabi (const struct target_desc *target_desc) | |
651 | { | |
652 | return target_desc->osabi; | |
653 | } | |
654 | ||
268a13a5 | 655 | /* See gdbsupport/tdesc.h. */ |
d278f585 AH |
656 | |
657 | const char * | |
658 | tdesc_osabi_name (const struct target_desc *target_desc) | |
659 | { | |
660 | enum gdb_osabi osabi = tdesc_osabi (target_desc); | |
661 | if (osabi > GDB_OSABI_UNKNOWN && osabi < GDB_OSABI_INVALID) | |
662 | return gdbarch_osabi_name (osabi); | |
663 | return nullptr; | |
664 | } | |
23181151 | 665 | |
123dc839 DJ |
666 | /* Return 1 if this target description includes any registers. */ |
667 | ||
668 | int | |
669 | tdesc_has_registers (const struct target_desc *target_desc) | |
670 | { | |
123dc839 DJ |
671 | if (target_desc == NULL) |
672 | return 0; | |
673 | ||
3eea796c | 674 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 675 | if (!feature->registers.empty ()) |
123dc839 DJ |
676 | return 1; |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
681 | /* Return the feature with the given name, if present, or NULL if | |
682 | the named feature is not found. */ | |
683 | ||
684 | const struct tdesc_feature * | |
685 | tdesc_find_feature (const struct target_desc *target_desc, | |
686 | const char *name) | |
687 | { | |
3eea796c | 688 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 689 | if (feature->name == name) |
3eea796c | 690 | return feature.get (); |
123dc839 DJ |
691 | |
692 | return NULL; | |
693 | } | |
694 | ||
695 | /* Return the name of FEATURE. */ | |
696 | ||
697 | const char * | |
698 | tdesc_feature_name (const struct tdesc_feature *feature) | |
699 | { | |
f65ff9f9 | 700 | return feature->name.c_str (); |
123dc839 DJ |
701 | } |
702 | ||
9fd3625f L |
703 | /* Lookup type associated with ID. */ |
704 | ||
705 | struct type * | |
706 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
707 | { | |
f0cddbef SM |
708 | tdesc_arch_data *data |
709 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
9fd3625f | 710 | |
f0cddbef | 711 | for (const tdesc_arch_reg ® : data->arch_regs) |
9fd3625f | 712 | { |
f0cddbef SM |
713 | if (reg.reg |
714 | && reg.reg->tdesc_type | |
715 | && reg.type | |
716 | && reg.reg->tdesc_type->name == id) | |
717 | return reg.type; | |
9fd3625f L |
718 | } |
719 | ||
720 | return NULL; | |
721 | } | |
722 | ||
123dc839 DJ |
723 | /* Support for registers from target descriptions. */ |
724 | ||
725 | /* Construct the per-gdbarch data. */ | |
726 | ||
727 | static void * | |
728 | tdesc_data_init (struct obstack *obstack) | |
729 | { | |
284a0e3c | 730 | return obstack_new<tdesc_arch_data> (obstack); |
123dc839 DJ |
731 | } |
732 | ||
733 | /* Similar, but for the temporary copy used during architecture | |
734 | initialization. */ | |
735 | ||
736 | struct tdesc_arch_data * | |
737 | tdesc_data_alloc (void) | |
738 | { | |
f0cddbef | 739 | return new tdesc_arch_data (); |
123dc839 DJ |
740 | } |
741 | ||
742 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
743 | to be used (for instance if it was unsuitable for the | |
744 | architecture). */ | |
745 | ||
746 | void | |
747 | tdesc_data_cleanup (void *data_untyped) | |
748 | { | |
19ba03f4 | 749 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 750 | |
f0cddbef | 751 | delete data; |
123dc839 DJ |
752 | } |
753 | ||
754 | /* Search FEATURE for a register named NAME. */ | |
755 | ||
7cc46491 DJ |
756 | static struct tdesc_reg * |
757 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
758 | const char *name) | |
123dc839 | 759 | { |
c9c895b9 | 760 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 761 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 762 | return reg.get (); |
123dc839 | 763 | |
7cc46491 DJ |
764 | return NULL; |
765 | } | |
766 | ||
767 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
768 | ||
769 | int | |
770 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
771 | struct tdesc_arch_data *data, | |
772 | int regno, const char *name) | |
773 | { | |
774 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
775 | ||
776 | if (reg == NULL) | |
777 | return 0; | |
778 | ||
779 | /* Make sure the vector includes a REGNO'th element. */ | |
f0cddbef SM |
780 | while (regno >= data->arch_regs.size ()) |
781 | data->arch_regs.emplace_back (nullptr, nullptr); | |
782 | ||
783 | data->arch_regs[regno] = tdesc_arch_reg (reg, NULL); | |
ad068eab | 784 | |
7cc46491 | 785 | return 1; |
123dc839 DJ |
786 | } |
787 | ||
58d6951d DJ |
788 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
789 | register number to it. */ | |
790 | ||
791 | int | |
792 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
793 | const char *name) | |
794 | { | |
795 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
796 | ||
797 | if (reg == NULL) | |
798 | return 0; | |
799 | ||
800 | return 1; | |
801 | } | |
802 | ||
7cc46491 DJ |
803 | /* Search FEATURE for a register whose name is in NAMES and assign |
804 | REGNO to it. */ | |
123dc839 DJ |
805 | |
806 | int | |
807 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
808 | struct tdesc_arch_data *data, | |
809 | int regno, const char *const names[]) | |
810 | { | |
811 | int i; | |
812 | ||
813 | for (i = 0; names[i] != NULL; i++) | |
814 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
815 | return 1; | |
816 | ||
817 | return 0; | |
818 | } | |
819 | ||
7cc46491 DJ |
820 | /* Search FEATURE for a register named NAME, and return its size in |
821 | bits. The register must exist. */ | |
822 | ||
823 | int | |
12863263 | 824 | tdesc_register_bitsize (const struct tdesc_feature *feature, const char *name) |
7cc46491 DJ |
825 | { |
826 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
827 | ||
828 | gdb_assert (reg != NULL); | |
829 | return reg->bitsize; | |
830 | } | |
831 | ||
123dc839 DJ |
832 | /* Look up a register by its GDB internal register number. */ |
833 | ||
ad068eab UW |
834 | static struct tdesc_arch_reg * |
835 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 836 | { |
123dc839 DJ |
837 | struct tdesc_arch_data *data; |
838 | ||
19ba03f4 | 839 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
f0cddbef SM |
840 | if (regno < data->arch_regs.size ()) |
841 | return &data->arch_regs[regno]; | |
123dc839 DJ |
842 | else |
843 | return NULL; | |
844 | } | |
845 | ||
ad068eab UW |
846 | static struct tdesc_reg * |
847 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
848 | { | |
849 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 850 | |
ad068eab UW |
851 | return reg? reg->reg : NULL; |
852 | } | |
853 | ||
f8b73d13 DJ |
854 | /* Return the name of register REGNO, from the target description or |
855 | from an architecture-provided pseudo_register_name method. */ | |
856 | ||
857 | const char * | |
d93859e2 | 858 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 859 | { |
d93859e2 UW |
860 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
861 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
862 | |
863 | if (reg != NULL) | |
a8142ee1 | 864 | return reg->name.c_str (); |
123dc839 | 865 | |
f6efe3f8 | 866 | if (regno >= num_regs && regno < gdbarch_num_cooked_regs (gdbarch)) |
123dc839 | 867 | { |
19ba03f4 SM |
868 | struct tdesc_arch_data *data |
869 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 870 | |
123dc839 | 871 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 872 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
873 | } |
874 | ||
875 | return ""; | |
876 | } | |
877 | ||
58d6951d | 878 | struct type * |
123dc839 DJ |
879 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
880 | { | |
ad068eab UW |
881 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
882 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
883 | int num_regs = gdbarch_num_regs (gdbarch); |
884 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
885 | ||
886 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
887 | { | |
19ba03f4 SM |
888 | struct tdesc_arch_data *data |
889 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 890 | |
123dc839 DJ |
891 | gdb_assert (data->pseudo_register_type != NULL); |
892 | return data->pseudo_register_type (gdbarch, regno); | |
893 | } | |
894 | ||
895 | if (reg == NULL) | |
896 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 897 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 898 | |
ad068eab | 899 | if (arch_reg->type == NULL) |
123dc839 | 900 | { |
ad068eab UW |
901 | /* First check for a predefined or target defined type. */ |
902 | if (reg->tdesc_type) | |
b8df6ca7 | 903 | arch_reg->type = make_gdb_type (gdbarch, reg->tdesc_type); |
ad068eab UW |
904 | |
905 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 906 | else if (reg->type == "float") |
ad068eab UW |
907 | { |
908 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
909 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
910 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
911 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
912 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
913 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
914 | else | |
915 | { | |
916 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 917 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
918 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
919 | } | |
920 | } | |
a8142ee1 | 921 | else if (reg->type == "int") |
ad068eab UW |
922 | { |
923 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
924 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
925 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
926 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
927 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
928 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
929 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
930 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
931 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
932 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
933 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 934 | /* A bit desperate by this point... */ |
ad068eab UW |
935 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
936 | else | |
937 | { | |
938 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 939 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
940 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
941 | } | |
942 | } | |
943 | ||
944 | if (arch_reg->type == NULL) | |
945 | internal_error (__FILE__, __LINE__, | |
946 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 947 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 948 | } |
123dc839 | 949 | |
ad068eab | 950 | return arch_reg->type; |
123dc839 DJ |
951 | } |
952 | ||
953 | static int | |
954 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
955 | { | |
956 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
957 | ||
958 | if (reg != NULL) | |
959 | return reg->target_regnum; | |
960 | else | |
961 | return -1; | |
962 | } | |
963 | ||
964 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
cef0f868 SH |
965 | target description may be classified as general, float, vector or other |
966 | register groups registered with reggroup_add(). Unlike a gdbarch | |
967 | register_reggroup_p method, this function will return -1 if it does not | |
968 | know; the caller should handle registers with no specified group. | |
969 | ||
970 | The names of containing features are not used. This might be extended | |
971 | to display registers in some more useful groupings. | |
123dc839 DJ |
972 | |
973 | The save-restore flag is also implemented here. */ | |
974 | ||
f8b73d13 DJ |
975 | int |
976 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
977 | struct reggroup *reggroup) | |
123dc839 | 978 | { |
123dc839 DJ |
979 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
980 | ||
cef0f868 SH |
981 | if (reg != NULL && !reg->group.empty () |
982 | && (reg->group == reggroup_name (reggroup))) | |
983 | return 1; | |
123dc839 DJ |
984 | |
985 | if (reg != NULL | |
986 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
987 | return reg->save_restore; | |
988 | ||
f8b73d13 DJ |
989 | return -1; |
990 | } | |
991 | ||
992 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
993 | group specified go to the default reggroup function and are handled | |
994 | by type. */ | |
995 | ||
996 | static int | |
997 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
998 | struct reggroup *reggroup) | |
999 | { | |
1000 | int num_regs = gdbarch_num_regs (gdbarch); | |
1001 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1002 | int ret; | |
1003 | ||
1004 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1005 | { | |
19ba03f4 SM |
1006 | struct tdesc_arch_data *data |
1007 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1008 | |
58d6951d DJ |
1009 | if (data->pseudo_register_reggroup_p != NULL) |
1010 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1011 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1012 | } |
1013 | ||
1014 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1015 | if (ret != -1) | |
1016 | return ret; | |
1017 | ||
123dc839 DJ |
1018 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1019 | } | |
1020 | ||
1021 | /* Record architecture-specific functions to call for pseudo-register | |
1022 | support. */ | |
1023 | ||
1024 | void | |
1025 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1026 | gdbarch_register_name_ftype *pseudo_name) | |
1027 | { | |
19ba03f4 SM |
1028 | struct tdesc_arch_data *data |
1029 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1030 | |
1031 | data->pseudo_register_name = pseudo_name; | |
1032 | } | |
1033 | ||
1034 | void | |
1035 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1036 | gdbarch_register_type_ftype *pseudo_type) | |
1037 | { | |
19ba03f4 SM |
1038 | struct tdesc_arch_data *data |
1039 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1040 | |
1041 | data->pseudo_register_type = pseudo_type; | |
1042 | } | |
1043 | ||
1044 | void | |
1045 | set_tdesc_pseudo_register_reggroup_p | |
1046 | (struct gdbarch *gdbarch, | |
1047 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1048 | { | |
19ba03f4 SM |
1049 | struct tdesc_arch_data *data |
1050 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1051 | |
1052 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1053 | } | |
1054 | ||
1055 | /* Update GDBARCH to use the target description for registers. */ | |
1056 | ||
1057 | void | |
1058 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1059 | const struct target_desc *target_desc, |
123dc839 DJ |
1060 | struct tdesc_arch_data *early_data) |
1061 | { | |
1062 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
1063 | struct tdesc_arch_data *data; |
1064 | htab_t reg_hash; | |
1065 | ||
123dc839 DJ |
1066 | /* We can't use the description for registers if it doesn't describe |
1067 | any. This function should only be called after validating | |
1068 | registers, so the caller should know that registers are | |
1069 | included. */ | |
1070 | gdb_assert (tdesc_has_registers (target_desc)); | |
1071 | ||
19ba03f4 | 1072 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1073 | data->arch_regs = early_data->arch_regs; |
f0cddbef | 1074 | delete early_data; |
123dc839 DJ |
1075 | |
1076 | /* Build up a set of all registers, so that we can assign register | |
1077 | numbers where needed. The hash table expands as necessary, so | |
1078 | the initial size is arbitrary. */ | |
1079 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1080 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1081 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1082 | { |
c9c895b9 | 1083 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1084 | |
c9c895b9 | 1085 | *slot = reg.get (); |
cef0f868 SH |
1086 | /* Add reggroup if its new. */ |
1087 | if (!reg->group.empty ()) | |
1088 | if (reggroup_find (gdbarch, reg->group.c_str ()) == NULL) | |
1089 | reggroup_add (gdbarch, reggroup_gdbarch_new (gdbarch, | |
1090 | reg->group.c_str (), | |
1091 | USER_REGGROUP)); | |
123dc839 DJ |
1092 | } |
1093 | ||
1094 | /* Remove any registers which were assigned numbers by the | |
1095 | architecture. */ | |
f0cddbef SM |
1096 | for (const tdesc_arch_reg &arch_reg : data->arch_regs) |
1097 | if (arch_reg.reg != NULL) | |
1098 | htab_remove_elt (reg_hash, arch_reg.reg); | |
123dc839 DJ |
1099 | |
1100 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1101 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1102 | Iterate over the features, not the hash table, so that the order |
1103 | matches that in the target description. */ | |
1104 | ||
f0cddbef SM |
1105 | gdb_assert (data->arch_regs.size () <= num_regs); |
1106 | while (data->arch_regs.size () < num_regs) | |
1107 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1108 | ||
3eea796c | 1109 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1110 | for (const tdesc_reg_up ® : feature->registers) |
1111 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1112 | { |
f0cddbef | 1113 | data->arch_regs.emplace_back (reg.get (), nullptr); |
123dc839 DJ |
1114 | num_regs++; |
1115 | } | |
1116 | ||
1117 | htab_delete (reg_hash); | |
1118 | ||
1119 | /* Update the architecture. */ | |
1120 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1121 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1122 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1123 | set_gdbarch_remote_register_number (gdbarch, | |
1124 | tdesc_remote_register_number); | |
1125 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1126 | } | |
123dc839 | 1127 | |
268a13a5 | 1128 | /* See gdbsupport/tdesc.h. */ |
f49ff000 | 1129 | |
123dc839 | 1130 | struct tdesc_feature * |
3b74854b | 1131 | tdesc_create_feature (struct target_desc *tdesc, const char *name) |
123dc839 | 1132 | { |
72ddacb7 | 1133 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1134 | |
3eea796c SM |
1135 | tdesc->features.emplace_back (new_feature); |
1136 | ||
123dc839 DJ |
1137 | return new_feature; |
1138 | } | |
1139 | ||
424163ea DJ |
1140 | struct target_desc * |
1141 | allocate_target_description (void) | |
1142 | { | |
b468ff4c | 1143 | return new target_desc (); |
424163ea | 1144 | } |
29709017 | 1145 | |
c55d06ec TT |
1146 | void |
1147 | target_desc_deleter::operator() (struct target_desc *target_desc) const | |
23181151 | 1148 | { |
b468ff4c | 1149 | delete target_desc; |
23181151 DJ |
1150 | } |
1151 | ||
e35359c5 UW |
1152 | void |
1153 | tdesc_add_compatible (struct target_desc *target_desc, | |
1154 | const struct bfd_arch_info *compatible) | |
1155 | { | |
e35359c5 UW |
1156 | /* If this instance of GDB is compiled without BFD support for the |
1157 | compatible architecture, simply ignore it -- we would not be able | |
1158 | to handle it anyway. */ | |
1159 | if (compatible == NULL) | |
1160 | return; | |
1161 | ||
40e2a983 | 1162 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1163 | if (compat == compatible) |
1164 | internal_error (__FILE__, __LINE__, | |
1165 | _("Attempted to add duplicate " | |
1166 | "compatible architecture \"%s\""), | |
1167 | compatible->printable_name); | |
1168 | ||
40e2a983 | 1169 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1170 | } |
1171 | ||
29709017 DJ |
1172 | void |
1173 | set_tdesc_property (struct target_desc *target_desc, | |
1174 | const char *key, const char *value) | |
1175 | { | |
29709017 DJ |
1176 | gdb_assert (key != NULL && value != NULL); |
1177 | ||
129c10bc SM |
1178 | if (tdesc_property (target_desc, key) != NULL) |
1179 | internal_error (__FILE__, __LINE__, | |
1180 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1181 | |
129c10bc | 1182 | target_desc->properties.emplace_back (key, value); |
29709017 | 1183 | } |
23181151 | 1184 | |
268a13a5 | 1185 | /* See gdbsupport/tdesc.h. */ |
5f035c07 YQ |
1186 | |
1187 | void | |
1188 | set_tdesc_architecture (struct target_desc *target_desc, | |
1189 | const char *name) | |
1190 | { | |
1191 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1192 | } | |
1193 | ||
23181151 DJ |
1194 | void |
1195 | set_tdesc_architecture (struct target_desc *target_desc, | |
1196 | const struct bfd_arch_info *arch) | |
1197 | { | |
1198 | target_desc->arch = arch; | |
1199 | } | |
08d16641 | 1200 | |
268a13a5 | 1201 | /* See gdbsupport/tdesc.h. */ |
5f035c07 YQ |
1202 | |
1203 | void | |
1204 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1205 | { | |
1206 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1207 | } | |
1208 | ||
08d16641 PA |
1209 | void |
1210 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1211 | { | |
1212 | target_desc->osabi = osabi; | |
1213 | } | |
23181151 DJ |
1214 | \f |
1215 | ||
1216 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1217 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1218 | ||
1219 | /* Helper functions for the CLI commands. */ | |
1220 | ||
1221 | static void | |
981a3fb3 | 1222 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1223 | { |
635c7e8a | 1224 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1225 | } |
1226 | ||
1227 | static void | |
981a3fb3 | 1228 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1229 | { |
1230 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1231 | } | |
1232 | ||
1233 | static void | |
981a3fb3 | 1234 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1235 | { |
635c7e8a | 1236 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1237 | } |
1238 | ||
1239 | static void | |
eb4c3f4a | 1240 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1241 | struct cmd_list_element *c) |
1242 | { | |
6ecd4729 PA |
1243 | xfree (target_description_filename); |
1244 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1245 | ||
23181151 DJ |
1246 | target_clear_description (); |
1247 | target_find_description (); | |
1248 | } | |
1249 | ||
1250 | static void | |
1251 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1252 | struct cmd_list_element *c, | |
1253 | const char *value) | |
1254 | { | |
6ecd4729 PA |
1255 | value = target_description_filename; |
1256 | ||
23181151 | 1257 | if (value != NULL && *value != '\0') |
3e43a32a | 1258 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1259 | value); |
1260 | else | |
3e43a32a MS |
1261 | printf_filtered (_("The target description will be " |
1262 | "read from the target.\n")); | |
23181151 DJ |
1263 | } |
1264 | ||
1265 | static void | |
e100df1a | 1266 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1267 | { |
1268 | xfree (target_description_filename); | |
1269 | target_description_filename = NULL; | |
1270 | target_clear_description (); | |
1271 | target_find_description (); | |
1272 | } | |
1273 | ||
6eb1e6a8 YQ |
1274 | /* Print target description in C. */ |
1275 | ||
1276 | class print_c_tdesc : public tdesc_element_visitor | |
1277 | { | |
1278 | public: | |
1279 | print_c_tdesc (std::string &filename_after_features) | |
1280 | : m_filename_after_features (filename_after_features) | |
1281 | { | |
1282 | const char *inp; | |
1283 | char *outp; | |
1284 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1285 | ||
1286 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1287 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1288 | if (*inp == '.') | |
1289 | break; | |
1290 | else if (*inp == '-') | |
1291 | *outp++ = '_'; | |
1292 | else | |
1293 | *outp++ = *inp; | |
1294 | *outp = '\0'; | |
1295 | ||
1296 | /* Standard boilerplate. */ | |
1297 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1298 | "-*- buffer-read-only: t -*- vi" | |
1299 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1300 | } |
1301 | ||
1302 | ~print_c_tdesc () | |
1303 | { | |
1304 | xfree (m_function); | |
1305 | } | |
1306 | ||
1307 | void visit_pre (const target_desc *e) override | |
1308 | { | |
25aa13e5 YQ |
1309 | printf_unfiltered (" Original: %s */\n\n", |
1310 | lbasename (m_filename_after_features.c_str ())); | |
1311 | ||
6eb1e6a8 YQ |
1312 | printf_unfiltered ("#include \"defs.h\"\n"); |
1313 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1314 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1315 | printf_unfiltered ("\n"); | |
1316 | ||
1317 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1318 | printf_unfiltered ("static void\n"); | |
1319 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1320 | printf_unfiltered ("{\n"); | |
1321 | printf_unfiltered | |
1322 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1323 | ||
1324 | if (tdesc_architecture (e) != NULL) | |
1325 | { | |
1326 | printf_unfiltered | |
1327 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1328 | tdesc_architecture (e)->printable_name); | |
1329 | printf_unfiltered ("\n"); | |
1330 | } | |
1331 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1332 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1333 | { | |
1334 | printf_unfiltered | |
1335 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1336 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1337 | printf_unfiltered ("\n"); | |
1338 | } | |
1339 | ||
23a8d186 | 1340 | for (const bfd_arch_info_type *compatible : e->compatible) |
40e2a983 SM |
1341 | printf_unfiltered |
1342 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1343 | compatible->printable_name); | |
6eb1e6a8 | 1344 | |
40e2a983 | 1345 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1346 | printf_unfiltered ("\n"); |
1347 | ||
129c10bc SM |
1348 | for (const property &prop : e->properties) |
1349 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1350 | prop.key.c_str (), prop.value.c_str ()); | |
1351 | ||
6eb1e6a8 YQ |
1352 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1353 | } | |
1354 | ||
25aa13e5 | 1355 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1356 | { |
1357 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1358 | e->name.c_str ()); |
6eb1e6a8 YQ |
1359 | } |
1360 | ||
25aa13e5 YQ |
1361 | void visit_post (const tdesc_feature *e) override |
1362 | {} | |
1363 | ||
6eb1e6a8 YQ |
1364 | void visit_post (const target_desc *e) override |
1365 | { | |
1366 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1367 | printf_unfiltered ("}\n"); | |
1368 | } | |
1369 | ||
d4a0e8b5 SM |
1370 | void visit (const tdesc_type_builtin *type) override |
1371 | { | |
1372 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); | |
1373 | } | |
1374 | ||
1375 | void visit (const tdesc_type_vector *type) override | |
6eb1e6a8 | 1376 | { |
d4a0e8b5 | 1377 | if (!m_printed_element_type) |
6eb1e6a8 | 1378 | { |
d4a0e8b5 SM |
1379 | printf_unfiltered (" tdesc_type *element_type;\n"); |
1380 | m_printed_element_type = true; | |
6eb1e6a8 YQ |
1381 | } |
1382 | ||
d4a0e8b5 SM |
1383 | printf_unfiltered |
1384 | (" element_type = tdesc_named_type (feature, \"%s\");\n", | |
1385 | type->element_type->name.c_str ()); | |
1386 | printf_unfiltered | |
1387 | (" tdesc_create_vector (feature, \"%s\", element_type, %d);\n", | |
1388 | type->name.c_str (), type->count); | |
1389 | ||
1390 | printf_unfiltered ("\n"); | |
1391 | } | |
1392 | ||
1393 | void visit (const tdesc_type_with_fields *type) override | |
1394 | { | |
1395 | if (!m_printed_type_with_fields) | |
6eb1e6a8 | 1396 | { |
d4a0e8b5 SM |
1397 | printf_unfiltered (" tdesc_type_with_fields *type_with_fields;\n"); |
1398 | m_printed_type_with_fields = true; | |
1399 | } | |
1400 | ||
6eb1e6a8 YQ |
1401 | switch (type->kind) |
1402 | { | |
6eb1e6a8 YQ |
1403 | case TDESC_TYPE_STRUCT: |
1404 | case TDESC_TYPE_FLAGS: | |
1405 | if (type->kind == TDESC_TYPE_STRUCT) | |
1406 | { | |
1407 | printf_unfiltered | |
d4a0e8b5 | 1408 | (" type_with_fields = tdesc_create_struct (feature, \"%s\");\n", |
082b9140 | 1409 | type->name.c_str ()); |
d4a0e8b5 | 1410 | if (type->size != 0) |
6eb1e6a8 | 1411 | printf_unfiltered |
d4a0e8b5 | 1412 | (" tdesc_set_struct_size (type_with_fields, %d);\n", type->size); |
6eb1e6a8 YQ |
1413 | } |
1414 | else | |
1415 | { | |
1416 | printf_unfiltered | |
d4a0e8b5 SM |
1417 | (" type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", |
1418 | type->name.c_str (), type->size); | |
6eb1e6a8 | 1419 | } |
d4a0e8b5 | 1420 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 YQ |
1421 | { |
1422 | const char *type_name; | |
1423 | ||
d05200d1 SM |
1424 | gdb_assert (f.type != NULL); |
1425 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1426 | |
1427 | /* To minimize changes to generated files, don't emit type | |
1428 | info for fields that have defaulted types. */ | |
d05200d1 | 1429 | if (f.start != -1) |
6eb1e6a8 | 1430 | { |
d05200d1 SM |
1431 | gdb_assert (f.end != -1); |
1432 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1433 | { |
d05200d1 | 1434 | gdb_assert (f.start == f.end); |
6eb1e6a8 | 1435 | printf_unfiltered |
d4a0e8b5 | 1436 | (" tdesc_add_flag (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1437 | f.start, f.name.c_str ()); |
6eb1e6a8 | 1438 | } |
d4a0e8b5 SM |
1439 | else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) |
1440 | || (type->size == 8 | |
d05200d1 | 1441 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1442 | { |
1443 | printf_unfiltered | |
d4a0e8b5 | 1444 | (" tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", |
d05200d1 | 1445 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1446 | } |
1447 | else | |
1448 | { | |
a8d2e585 SM |
1449 | printf_field_type_assignment |
1450 | ("tdesc_named_type (feature, \"%s\");\n", | |
6eb1e6a8 YQ |
1451 | type_name); |
1452 | printf_unfiltered | |
d4a0e8b5 | 1453 | (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," |
6eb1e6a8 | 1454 | " %d, %d, field_type);\n", |
d05200d1 | 1455 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1456 | } |
1457 | } | |
1458 | else /* Not a bitfield. */ | |
1459 | { | |
d05200d1 | 1460 | gdb_assert (f.end == -1); |
6eb1e6a8 | 1461 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
a8d2e585 SM |
1462 | printf_field_type_assignment |
1463 | ("tdesc_named_type (feature, \"%s\");\n", type_name); | |
6eb1e6a8 | 1464 | printf_unfiltered |
d4a0e8b5 | 1465 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1466 | f.name.c_str ()); |
6eb1e6a8 YQ |
1467 | } |
1468 | } | |
1469 | break; | |
1470 | case TDESC_TYPE_UNION: | |
1471 | printf_unfiltered | |
d4a0e8b5 | 1472 | (" type_with_fields = tdesc_create_union (feature, \"%s\");\n", |
082b9140 | 1473 | type->name.c_str ()); |
d4a0e8b5 | 1474 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 | 1475 | { |
a8d2e585 SM |
1476 | printf_field_type_assignment |
1477 | ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); | |
6eb1e6a8 | 1478 | printf_unfiltered |
d4a0e8b5 | 1479 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1480 | f.name.c_str ()); |
6eb1e6a8 YQ |
1481 | } |
1482 | break; | |
1483 | case TDESC_TYPE_ENUM: | |
1484 | printf_unfiltered | |
d4a0e8b5 SM |
1485 | (" type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", |
1486 | type->name.c_str (), type->size); | |
1487 | for (const tdesc_type_field &f : type->fields) | |
6eb1e6a8 | 1488 | printf_unfiltered |
d4a0e8b5 | 1489 | (" tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1490 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1491 | break; |
1492 | default: | |
082b9140 | 1493 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 | 1494 | } |
d4a0e8b5 | 1495 | |
6eb1e6a8 YQ |
1496 | printf_unfiltered ("\n"); |
1497 | } | |
1498 | ||
1499 | void visit (const tdesc_reg *reg) override | |
1500 | { | |
1501 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1502 | reg->name.c_str (), reg->target_regnum, |
1503 | reg->save_restore); | |
1504 | if (!reg->group.empty ()) | |
1505 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1506 | else |
1507 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1508 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1509 | } |
1510 | ||
25aa13e5 YQ |
1511 | protected: |
1512 | std::string m_filename_after_features; | |
1513 | ||
6eb1e6a8 | 1514 | private: |
a8d2e585 SM |
1515 | |
1516 | /* Print an assignment to the field_type variable. Print the declaration | |
1517 | of field_type if that has not been done yet. */ | |
6e8c24fe | 1518 | ATTRIBUTE_PRINTF (2, 3) |
a8d2e585 SM |
1519 | void printf_field_type_assignment (const char *fmt, ...) |
1520 | { | |
1521 | if (!m_printed_field_type) | |
1522 | { | |
1523 | printf_unfiltered (" tdesc_type *field_type;\n"); | |
1524 | m_printed_field_type = true; | |
1525 | } | |
1526 | ||
1527 | printf_unfiltered (" field_type = "); | |
1528 | ||
1529 | va_list args; | |
1530 | va_start (args, fmt); | |
1531 | vprintf_unfiltered (fmt, args); | |
1532 | va_end (args); | |
1533 | } | |
1534 | ||
6eb1e6a8 | 1535 | char *m_function; |
d4a0e8b5 SM |
1536 | |
1537 | /* Did we print "struct tdesc_type *element_type;" yet? */ | |
1538 | bool m_printed_element_type = false; | |
1539 | ||
1540 | /* Did we print "struct tdesc_type_with_fields *element_type;" yet? */ | |
1541 | bool m_printed_type_with_fields = false; | |
1542 | ||
1543 | /* Did we print "struct tdesc_type *field_type;" yet? */ | |
6eb1e6a8 | 1544 | bool m_printed_field_type = false; |
6eb1e6a8 YQ |
1545 | }; |
1546 | ||
25aa13e5 YQ |
1547 | /* Print target description feature in C. */ |
1548 | ||
1549 | class print_c_feature : public print_c_tdesc | |
1550 | { | |
1551 | public: | |
1552 | print_c_feature (std::string &file) | |
1553 | : print_c_tdesc (file) | |
1554 | { | |
1555 | /* Trim ".tmp". */ | |
1556 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
1557 | ||
1558 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
1559 | } | |
1560 | ||
1561 | void visit_pre (const target_desc *e) override | |
1562 | { | |
1563 | printf_unfiltered (" Original: %s */\n\n", | |
1564 | lbasename (m_filename_after_features.c_str ())); | |
1565 | ||
268a13a5 | 1566 | printf_unfiltered ("#include \"gdbsupport/tdesc.h\"\n"); |
25aa13e5 YQ |
1567 | printf_unfiltered ("\n"); |
1568 | } | |
1569 | ||
1570 | void visit_post (const target_desc *e) override | |
1571 | {} | |
1572 | ||
1573 | void visit_pre (const tdesc_feature *e) override | |
1574 | { | |
1575 | std::string name (m_filename_after_features); | |
1576 | ||
1577 | auto pos = name.find_first_of ('.'); | |
1578 | ||
1579 | name = name.substr (0, pos); | |
1580 | std::replace (name.begin (), name.end (), '/', '_'); | |
1581 | std::replace (name.begin (), name.end (), '-', '_'); | |
1582 | ||
1583 | printf_unfiltered ("static int\n"); | |
1584 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
1585 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
1586 | ||
1587 | printf_unfiltered ("{\n"); | |
1588 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
1589 | |
1590 | printf_unfiltered | |
3b74854b AH |
1591 | ("\n feature = tdesc_create_feature (result, \"%s\");\n", |
1592 | e->name.c_str ()); | |
25aa13e5 YQ |
1593 | } |
1594 | ||
1595 | void visit_post (const tdesc_feature *e) override | |
1596 | { | |
1597 | printf_unfiltered (" return regnum;\n"); | |
1598 | printf_unfiltered ("}\n"); | |
1599 | } | |
1600 | ||
1601 | void visit (const tdesc_reg *reg) override | |
1602 | { | |
ea03d0d3 YQ |
1603 | /* Most "reg" in XML target descriptions don't have "regnum" |
1604 | attribute, so the register number is allocated sequentially. | |
1605 | In case that reg has "regnum" attribute, register number | |
1606 | should be set by that explicitly. */ | |
1607 | ||
1608 | if (reg->target_regnum < m_next_regnum) | |
1609 | { | |
1610 | /* The integrity check, it can catch some errors on register | |
1611 | number collision, like this, | |
1612 | ||
1613 | <reg name="x0" bitsize="32"/> | |
1614 | <reg name="x1" bitsize="32"/> | |
1615 | <reg name="x2" bitsize="32"/> | |
1616 | <reg name="x3" bitsize="32"/> | |
1617 | <reg name="ps" bitsize="32" regnum="3"/> | |
1618 | ||
1619 | but it also has false negatives. The target description | |
1620 | below is correct, | |
1621 | ||
1622 | <reg name="x1" bitsize="32" regnum="1"/> | |
1623 | <reg name="x3" bitsize="32" regnum="3"/> | |
1624 | <reg name="x2" bitsize="32" regnum="2"/> | |
1625 | <reg name="x4" bitsize="32" regnum="4"/> | |
1626 | ||
1627 | but it is not a good practice, so still error on this, | |
1628 | and also print the message so that it can be saved in the | |
1629 | generated c file. */ | |
1630 | ||
1631 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
1632 | reg->target_regnum); | |
1633 | printf_unfiltered ("is not the largest number (%d).\n", | |
1634 | m_next_regnum); | |
1635 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
1636 | reg->target_regnum, m_next_regnum); | |
1637 | } | |
1638 | ||
1639 | if (reg->target_regnum > m_next_regnum) | |
1640 | { | |
1641 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
1642 | m_next_regnum = reg->target_regnum; | |
1643 | } | |
1644 | ||
25aa13e5 | 1645 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
1646 | reg->name.c_str (), reg->save_restore); |
1647 | if (!reg->group.empty ()) | |
1648 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
1649 | else |
1650 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1651 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
1652 | |
1653 | m_next_regnum++; | |
25aa13e5 YQ |
1654 | } |
1655 | ||
ea03d0d3 YQ |
1656 | private: |
1657 | /* The register number to use for the next register we see. */ | |
1658 | int m_next_regnum = 0; | |
25aa13e5 YQ |
1659 | }; |
1660 | ||
268a13a5 | 1661 | /* See gdbsupport/tdesc.h. */ |
e98577a9 AH |
1662 | |
1663 | const char * | |
1664 | tdesc_get_features_xml (const target_desc *tdesc) | |
1665 | { | |
1666 | if (tdesc->xmltarget == nullptr) | |
1667 | { | |
1668 | std::string buffer ("@"); | |
1669 | print_xml_feature v (&buffer); | |
1670 | tdesc->accept (v); | |
1671 | tdesc->xmltarget = xstrdup (buffer.c_str ()); | |
1672 | } | |
1673 | return tdesc->xmltarget; | |
1674 | } | |
1675 | ||
81adfced | 1676 | static void |
e100df1a | 1677 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
1678 | { |
1679 | const struct target_desc *tdesc; | |
6eb1e6a8 | 1680 | const char *filename; |
81adfced | 1681 | |
8e2141c6 YQ |
1682 | if (args == NULL) |
1683 | { | |
1684 | /* Use the global target-supplied description, not the current | |
1685 | architecture's. This lets a GDB for one architecture generate C | |
1686 | for another architecture's description, even though the gdbarch | |
1687 | initialization code will reject the new description. */ | |
1688 | tdesc = current_target_desc; | |
1689 | filename = target_description_filename; | |
1690 | } | |
1691 | else | |
1692 | { | |
1693 | /* Use the target description from the XML file. */ | |
1694 | filename = args; | |
1695 | tdesc = file_read_description_xml (filename); | |
1696 | } | |
1697 | ||
81adfced DJ |
1698 | if (tdesc == NULL) |
1699 | error (_("There is no target description to print.")); | |
1700 | ||
8e2141c6 | 1701 | if (filename == NULL) |
81adfced DJ |
1702 | error (_("The current target description did not come from an XML file.")); |
1703 | ||
6eb1e6a8 YQ |
1704 | std::string filename_after_features (filename); |
1705 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 1706 | |
6eb1e6a8 YQ |
1707 | if (loc != std::string::npos) |
1708 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 1709 | |
25aa13e5 YQ |
1710 | /* Print c files for target features instead of target descriptions, |
1711 | because c files got from target features are more flexible than the | |
1712 | counterparts. */ | |
6c73f67f YQ |
1713 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
1714 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 1715 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
b5ffee31 | 1716 | || startswith (filename_after_features.c_str (), "riscv/") |
49bdb7ee | 1717 | || startswith (filename_after_features.c_str (), "tic6x-") |
89abbcc2 AH |
1718 | || startswith (filename_after_features.c_str (), "aarch64") |
1719 | || startswith (filename_after_features.c_str (), "arm/")) | |
25aa13e5 YQ |
1720 | { |
1721 | print_c_feature v (filename_after_features); | |
81adfced | 1722 | |
25aa13e5 YQ |
1723 | tdesc->accept (v); |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | print_c_tdesc v (filename_after_features); | |
1728 | ||
1729 | tdesc->accept (v); | |
1730 | } | |
81adfced DJ |
1731 | } |
1732 | ||
27d41eac YQ |
1733 | namespace selftests { |
1734 | ||
1c28969e SM |
1735 | /* A reference target description, used for testing (see record_xml_tdesc). */ |
1736 | ||
1737 | struct xml_test_tdesc | |
1738 | { | |
1739 | xml_test_tdesc (const char *name, std::unique_ptr<const target_desc> &&tdesc) | |
1740 | : name (name), tdesc (std::move (tdesc)) | |
1741 | {} | |
1742 | ||
1743 | const char *name; | |
1744 | std::unique_ptr<const target_desc> tdesc; | |
1745 | }; | |
1746 | ||
1747 | static std::vector<xml_test_tdesc> xml_tdesc; | |
27d41eac YQ |
1748 | |
1749 | #if GDB_SELF_TEST | |
1750 | ||
1751 | /* See target-descritpions.h. */ | |
1752 | ||
1753 | void | |
1754 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
1755 | { | |
1c28969e | 1756 | xml_tdesc.emplace_back (xml_file, std::unique_ptr<const target_desc> (tdesc)); |
27d41eac YQ |
1757 | } |
1758 | #endif | |
1759 | ||
1760 | } | |
1761 | ||
e98577a9 AH |
1762 | /* Test the convesion process of a target description to/from xml: Take a target |
1763 | description TDESC, convert to xml, back to a description, and confirm the new | |
1764 | tdesc is identical to the original. */ | |
1765 | static bool | |
1766 | maintenance_check_tdesc_xml_convert (const target_desc *tdesc, const char *name) | |
1767 | { | |
1768 | const char *xml = tdesc_get_features_xml (tdesc); | |
1769 | ||
1770 | if (xml == nullptr || *xml != '@') | |
1771 | { | |
1772 | printf_filtered (_("Could not convert description for %s to xml.\n"), | |
1773 | name); | |
1774 | return false; | |
1775 | } | |
1776 | ||
1777 | const target_desc *tdesc_trans = string_read_description_xml (xml + 1); | |
1778 | ||
1779 | if (tdesc_trans == nullptr) | |
1780 | { | |
1781 | printf_filtered (_("Could not convert description for %s from xml.\n"), | |
1782 | name); | |
1783 | return false; | |
1784 | } | |
1785 | else if (*tdesc != *tdesc_trans) | |
1786 | { | |
1787 | printf_filtered (_("Converted description for %s does not match.\n"), | |
1788 | name); | |
1789 | return false; | |
1790 | } | |
1791 | return true; | |
1792 | } | |
1793 | ||
1794 | ||
27d41eac YQ |
1795 | /* Check that the target descriptions created dynamically by |
1796 | architecture-specific code equal the descriptions created from XML files | |
1797 | found in the specified directory DIR. */ | |
1798 | ||
1799 | static void | |
e100df1a | 1800 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
1801 | { |
1802 | if (dir == NULL) | |
1803 | error (_("Missing dir name")); | |
1804 | ||
1805 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
1806 | std::string feature_dir (dir1.get ()); | |
1807 | unsigned int failed = 0; | |
1808 | ||
1809 | for (auto const &e : selftests::xml_tdesc) | |
1810 | { | |
1c28969e | 1811 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.name); |
27d41eac YQ |
1812 | const target_desc *tdesc |
1813 | = file_read_description_xml (tdesc_xml.data ()); | |
1814 | ||
1c28969e | 1815 | if (tdesc == NULL || *tdesc != *e.tdesc) |
e98577a9 | 1816 | { |
1c28969e | 1817 | printf_filtered ( _("Descriptions for %s do not match.\n"), e.name); |
e98577a9 AH |
1818 | failed++; |
1819 | } | |
1c28969e SM |
1820 | else if (!maintenance_check_tdesc_xml_convert (tdesc, e.name) |
1821 | || !maintenance_check_tdesc_xml_convert (e.tdesc.get (), e.name)) | |
27d41eac YQ |
1822 | failed++; |
1823 | } | |
1824 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
1825 | (long) selftests::xml_tdesc.size (), failed); | |
1826 | } | |
1827 | ||
23181151 DJ |
1828 | void |
1829 | _initialize_target_descriptions (void) | |
1830 | { | |
123dc839 DJ |
1831 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1832 | ||
23181151 DJ |
1833 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1834 | Set target description specific variables."), | |
1835 | &tdesc_set_cmdlist, "set tdesc ", | |
1836 | 0 /* allow-unknown */, &setlist); | |
1837 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1838 | Show target description specific variables."), | |
1839 | &tdesc_show_cmdlist, "show tdesc ", | |
1840 | 0 /* allow-unknown */, &showlist); | |
1841 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1842 | Unset target description specific variables."), | |
1843 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1844 | 0 /* allow-unknown */, &unsetlist); | |
1845 | ||
1846 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 1847 | &tdesc_filename_cmd_string, |
23181151 | 1848 | _("\ |
590042fc PW |
1849 | Set the file to read for an XML target description."), _("\ |
1850 | Show the file to read for an XML target description."), _("\ | |
23181151 DJ |
1851 | When set, GDB will read the target description from a local\n\ |
1852 | file instead of querying the remote target."), | |
1853 | set_tdesc_filename_cmd, | |
1854 | show_tdesc_filename_cmd, | |
1855 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1856 | ||
1857 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
590042fc PW |
1858 | Unset the file to read for an XML target description.\n\ |
1859 | When unset, GDB will read the description from the target."), | |
23181151 | 1860 | &tdesc_unset_cmdlist); |
81adfced DJ |
1861 | |
1862 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1863 | Print the current target description as a C source file."), | |
1864 | &maintenanceprintlist); | |
27d41eac YQ |
1865 | |
1866 | cmd_list_element *cmd; | |
1867 | ||
1868 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
1869 | maintenance_check_xml_descriptions, _("\ | |
590042fc | 1870 | Check equality of GDB target descriptions and XML created descriptions.\n\ |
27d41eac YQ |
1871 | Check the target descriptions created in GDB equal the descriptions\n\ |
1872 | created from XML files in the directory.\n\ | |
1873 | The parameter is the directory name."), | |
1874 | &maintenancechecklist); | |
1875 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 1876 | } |