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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 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 | { | |
122 | case TDESC_TYPE_IEEE_SINGLE: | |
123 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_single", | |
124 | floatformats_ieee_single); | |
125 | return; | |
126 | ||
127 | case TDESC_TYPE_IEEE_DOUBLE: | |
128 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_double", | |
129 | floatformats_ieee_double); | |
130 | return; | |
131 | case TDESC_TYPE_ARM_FPA_EXT: | |
132 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_arm_ext", | |
133 | floatformats_arm_ext); | |
134 | return; | |
135 | ||
136 | case TDESC_TYPE_I387_EXT: | |
137 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_i387_ext", | |
138 | floatformats_i387_ext); | |
139 | return; | |
140 | } | |
d4a0e8b5 | 141 | |
b8df6ca7 AH |
142 | internal_error (__FILE__, __LINE__, |
143 | "Type \"%s\" has an unknown kind %d", | |
144 | e->name.c_str (), e->kind); | |
145 | } | |
d4a0e8b5 | 146 | |
b8df6ca7 AH |
147 | void visit (const tdesc_type_vector *e) override |
148 | { | |
149 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); | |
150 | if (m_type != NULL) | |
151 | return; | |
152 | ||
153 | type *element_gdb_type = make_gdb_type (m_gdbarch, e->element_type); | |
154 | m_type = init_vector_type (element_gdb_type, e->count); | |
155 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
156 | return; | |
157 | } | |
53c934e9 | 158 | |
b8df6ca7 AH |
159 | void visit (const tdesc_type_with_fields *e) override |
160 | { | |
161 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); | |
162 | if (m_type != NULL) | |
163 | return; | |
d4a0e8b5 | 164 | |
b8df6ca7 AH |
165 | switch (e->kind) |
166 | { | |
167 | case TDESC_TYPE_STRUCT: | |
168 | make_gdb_type_struct (e); | |
169 | return; | |
170 | case TDESC_TYPE_UNION: | |
171 | make_gdb_type_union (e); | |
172 | return; | |
173 | case TDESC_TYPE_FLAGS: | |
174 | make_gdb_type_flags (e); | |
175 | return; | |
176 | case TDESC_TYPE_ENUM: | |
177 | make_gdb_type_enum (e); | |
178 | return; | |
179 | } | |
d4a0e8b5 | 180 | |
b8df6ca7 AH |
181 | internal_error (__FILE__, __LINE__, |
182 | "Type \"%s\" has an unknown kind %d", | |
183 | e->name.c_str (), e->kind); | |
184 | } | |
d4a0e8b5 | 185 | |
b8df6ca7 | 186 | private: |
d4a0e8b5 | 187 | |
b8df6ca7 AH |
188 | void make_gdb_type_struct (const tdesc_type_with_fields *e) |
189 | { | |
190 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_STRUCT); | |
191 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
192 | TYPE_TAG_NAME (m_type) = TYPE_NAME (m_type); | |
d4a0e8b5 | 193 | |
b8df6ca7 AH |
194 | for (const tdesc_type_field &f : e->fields) |
195 | { | |
196 | if (f.start != -1 && f.end != -1) | |
197 | { | |
198 | /* Bitfield. */ | |
199 | struct field *fld; | |
200 | struct type *field_gdb_type; | |
201 | int bitsize, total_size; | |
202 | ||
203 | /* This invariant should be preserved while creating types. */ | |
204 | gdb_assert (e->size != 0); | |
205 | if (f.type != NULL) | |
206 | field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
207 | else if (e->size > 4) | |
208 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint64; | |
209 | else | |
210 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint32; | |
211 | ||
212 | fld = append_composite_type_field_raw | |
213 | (m_type, xstrdup (f.name.c_str ()), field_gdb_type); | |
214 | ||
215 | /* For little-endian, BITPOS counts from the LSB of | |
216 | the structure and marks the LSB of the field. For | |
217 | big-endian, BITPOS counts from the MSB of the | |
218 | structure and marks the MSB of the field. Either | |
219 | way, it is the number of bits to the "left" of the | |
220 | field. To calculate this in big-endian, we need | |
221 | the total size of the structure. */ | |
222 | bitsize = f.end - f.start + 1; | |
223 | total_size = e->size * TARGET_CHAR_BIT; | |
224 | if (gdbarch_bits_big_endian (m_gdbarch)) | |
225 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); | |
226 | else | |
227 | SET_FIELD_BITPOS (fld[0], f.start); | |
228 | FIELD_BITSIZE (fld[0]) = bitsize; | |
229 | } | |
230 | else | |
231 | { | |
232 | gdb_assert (f.start == -1 && f.end == -1); | |
233 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
234 | append_composite_type_field (m_type, | |
d4a0e8b5 | 235 | xstrdup (f.name.c_str ()), |
b8df6ca7 AH |
236 | field_gdb_type); |
237 | } | |
238 | } | |
d4a0e8b5 | 239 | |
b8df6ca7 AH |
240 | if (e->size != 0) |
241 | TYPE_LENGTH (m_type) = e->size; | |
242 | } | |
d4a0e8b5 | 243 | |
b8df6ca7 AH |
244 | void make_gdb_type_union (const tdesc_type_with_fields *e) |
245 | { | |
246 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_UNION); | |
247 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
d4a0e8b5 | 248 | |
b8df6ca7 AH |
249 | for (const tdesc_type_field &f : e->fields) |
250 | { | |
251 | type* field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
252 | append_composite_type_field (m_type, xstrdup (f.name.c_str ()), | |
253 | field_gdb_type); | |
254 | ||
255 | /* If any of the children of a union are vectors, flag the | |
256 | union as a vector also. This allows e.g. a union of two | |
257 | vector types to show up automatically in "info vector". */ | |
258 | if (TYPE_VECTOR (field_gdb_type)) | |
259 | TYPE_VECTOR (m_type) = 1; | |
260 | } | |
261 | } | |
d4a0e8b5 | 262 | |
b8df6ca7 | 263 | void make_gdb_type_flags (const tdesc_type_with_fields *e) |
d4a0e8b5 | 264 | { |
b8df6ca7 AH |
265 | m_type = arch_flags_type (m_gdbarch, e->name.c_str (), |
266 | e->size * TARGET_CHAR_BIT); | |
267 | ||
268 | for (const tdesc_type_field &f : e->fields) | |
269 | { | |
270 | int bitsize = f.end - f.start + 1; | |
271 | ||
272 | gdb_assert (f.type != NULL); | |
273 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
274 | append_flags_type_field (m_type, f.start, bitsize, | |
275 | field_gdb_type, f.name.c_str ()); | |
276 | } | |
d4a0e8b5 SM |
277 | } |
278 | ||
b8df6ca7 AH |
279 | void make_gdb_type_enum (const tdesc_type_with_fields *e) |
280 | { | |
281 | m_type = arch_type (m_gdbarch, TYPE_CODE_ENUM, e->size * TARGET_CHAR_BIT, | |
282 | e->name.c_str ()); | |
d4a0e8b5 | 283 | |
b8df6ca7 AH |
284 | TYPE_UNSIGNED (m_type) = 1; |
285 | for (const tdesc_type_field &f : e->fields) | |
286 | { | |
287 | struct field *fld | |
288 | = append_composite_type_field_raw (m_type, | |
289 | xstrdup (f.name.c_str ()), | |
290 | NULL); | |
d4a0e8b5 | 291 | |
b8df6ca7 AH |
292 | SET_FIELD_BITPOS (fld[0], f.start); |
293 | } | |
294 | } | |
295 | ||
296 | /* The gdbarch used. */ | |
297 | struct gdbarch *m_gdbarch; | |
298 | ||
299 | /* The type created. */ | |
300 | type *m_type; | |
301 | }; | |
302 | ||
303 | gdb_type_creator gdb_type (gdbarch); | |
304 | ttype->accept (gdb_type); | |
305 | return gdb_type.get_type (); | |
306 | } | |
123dc839 | 307 | |
123dc839 DJ |
308 | /* A target description. */ |
309 | ||
6eb1e6a8 | 310 | struct target_desc : tdesc_element |
424163ea | 311 | { |
b468ff4c YQ |
312 | target_desc () |
313 | {} | |
314 | ||
3eea796c | 315 | virtual ~target_desc () = default; |
b468ff4c YQ |
316 | |
317 | target_desc (const target_desc &) = delete; | |
318 | void operator= (const target_desc &) = delete; | |
319 | ||
23181151 | 320 | /* The architecture reported by the target, if any. */ |
b468ff4c | 321 | const struct bfd_arch_info *arch = NULL; |
23181151 | 322 | |
08d16641 PA |
323 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
324 | otherwise. */ | |
b468ff4c | 325 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 326 | |
e35359c5 | 327 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 328 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 329 | |
29709017 | 330 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 331 | std::vector<property> properties; |
123dc839 DJ |
332 | |
333 | /* The features associated with this target. */ | |
858c9d13 | 334 | std::vector<tdesc_feature_up> features; |
6eb1e6a8 YQ |
335 | |
336 | void accept (tdesc_element_visitor &v) const override | |
337 | { | |
338 | v.visit_pre (this); | |
339 | ||
3eea796c | 340 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
341 | feature->accept (v); |
342 | ||
343 | v.visit_post (this); | |
344 | } | |
27d41eac YQ |
345 | |
346 | bool operator== (const target_desc &other) const | |
347 | { | |
348 | if (arch != other.arch) | |
349 | return false; | |
350 | ||
351 | if (osabi != other.osabi) | |
352 | return false; | |
353 | ||
3eea796c | 354 | if (features.size () != other.features.size ()) |
27d41eac YQ |
355 | return false; |
356 | ||
3eea796c | 357 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 358 | { |
3eea796c SM |
359 | const tdesc_feature_up &feature1 = features[ix]; |
360 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 361 | |
3eea796c | 362 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
363 | return false; |
364 | } | |
365 | ||
366 | return true; | |
367 | } | |
368 | ||
369 | bool operator!= (const target_desc &other) const | |
370 | { | |
371 | return !(*this == other); | |
372 | } | |
123dc839 DJ |
373 | }; |
374 | ||
375 | /* Per-architecture data associated with a target description. The | |
376 | target description may be shared by multiple architectures, but | |
377 | this data is private to one gdbarch. */ | |
378 | ||
f0cddbef | 379 | struct tdesc_arch_reg |
ad068eab | 380 | { |
f0cddbef SM |
381 | tdesc_arch_reg (tdesc_reg *reg_, struct type *type_) |
382 | : reg (reg_), type (type_) | |
383 | {} | |
384 | ||
ad068eab UW |
385 | struct tdesc_reg *reg; |
386 | struct type *type; | |
f0cddbef | 387 | }; |
ad068eab | 388 | |
123dc839 DJ |
389 | struct tdesc_arch_data |
390 | { | |
ad068eab | 391 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
392 | During initialization of the gdbarch this list is used to store |
393 | registers which the architecture assigns a fixed register number. | |
394 | Registers which are NULL in this array, or off the end, are | |
395 | treated as zero-sized and nameless (i.e. placeholders in the | |
396 | numbering). */ | |
f0cddbef | 397 | std::vector<tdesc_arch_reg> arch_regs; |
123dc839 DJ |
398 | |
399 | /* Functions which report the register name, type, and reggroups for | |
400 | pseudo-registers. */ | |
f0cddbef SM |
401 | gdbarch_register_name_ftype *pseudo_register_name = NULL; |
402 | gdbarch_register_type_ftype *pseudo_register_type = NULL; | |
403 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p = NULL; | |
424163ea DJ |
404 | }; |
405 | ||
6ecd4729 PA |
406 | /* Info about an inferior's target description. There's one of these |
407 | for each inferior. */ | |
424163ea | 408 | |
6ecd4729 PA |
409 | struct target_desc_info |
410 | { | |
411 | /* A flag indicating that a description has already been fetched | |
412 | from the target, so it should not be queried again. */ | |
413 | ||
414 | int fetched; | |
424163ea | 415 | |
6ecd4729 PA |
416 | /* The description fetched from the target, or NULL if the target |
417 | did not supply any description. Only valid when | |
418 | target_desc_fetched is set. Only the description initialization | |
419 | code should access this; normally, the description should be | |
420 | accessed through the gdbarch object. */ | |
424163ea | 421 | |
6ecd4729 | 422 | const struct target_desc *tdesc; |
424163ea | 423 | |
6ecd4729 PA |
424 | /* The filename to read a target description from, as set by "set |
425 | tdesc filename ..." */ | |
424163ea | 426 | |
6ecd4729 PA |
427 | char *filename; |
428 | }; | |
23181151 | 429 | |
6ecd4729 PA |
430 | /* Get the inferior INF's target description info, allocating one on |
431 | the stop if necessary. */ | |
23181151 | 432 | |
6ecd4729 PA |
433 | static struct target_desc_info * |
434 | get_tdesc_info (struct inferior *inf) | |
435 | { | |
436 | if (inf->tdesc_info == NULL) | |
437 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
438 | return inf->tdesc_info; | |
439 | } | |
23181151 | 440 | |
123dc839 DJ |
441 | /* A handle for architecture-specific data associated with the |
442 | target description (see struct tdesc_arch_data). */ | |
443 | ||
444 | static struct gdbarch_data *tdesc_data; | |
445 | ||
6ecd4729 PA |
446 | /* See target-descriptions.h. */ |
447 | ||
448 | int | |
449 | target_desc_info_from_user_p (struct target_desc_info *info) | |
450 | { | |
451 | return info != NULL && info->filename != NULL; | |
452 | } | |
453 | ||
454 | /* See target-descriptions.h. */ | |
455 | ||
456 | void | |
457 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
458 | { | |
459 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
460 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
461 | ||
462 | dest->fetched = src->fetched; | |
463 | dest->tdesc = src->tdesc; | |
464 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
465 | } | |
466 | ||
467 | /* See target-descriptions.h. */ | |
468 | ||
469 | void | |
470 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
471 | { | |
472 | if (tdesc_info != NULL) | |
473 | { | |
474 | xfree (tdesc_info->filename); | |
475 | xfree (tdesc_info); | |
476 | } | |
477 | } | |
478 | ||
479 | /* Convenience helper macros. */ | |
480 | ||
481 | #define target_desc_fetched \ | |
482 | get_tdesc_info (current_inferior ())->fetched | |
483 | #define current_target_desc \ | |
484 | get_tdesc_info (current_inferior ())->tdesc | |
485 | #define target_description_filename \ | |
486 | get_tdesc_info (current_inferior ())->filename | |
487 | ||
488 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
489 | ||
490 | static char *tdesc_filename_cmd_string; | |
491 | ||
424163ea DJ |
492 | /* Fetch the current target's description, and switch the current |
493 | architecture to one which incorporates that description. */ | |
494 | ||
495 | void | |
496 | target_find_description (void) | |
497 | { | |
498 | /* If we've already fetched a description from the target, don't do | |
499 | it again. This allows a target to fetch the description early, | |
500 | during its to_open or to_create_inferior, if it needs extra | |
501 | information about the target to initialize. */ | |
502 | if (target_desc_fetched) | |
503 | return; | |
504 | ||
505 | /* The current architecture should not have any target description | |
506 | specified. It should have been cleared, e.g. when we | |
507 | disconnected from the previous target. */ | |
f5656ead | 508 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 509 | |
23181151 DJ |
510 | /* First try to fetch an XML description from the user-specified |
511 | file. */ | |
512 | current_target_desc = NULL; | |
513 | if (target_description_filename != NULL | |
514 | && *target_description_filename != '\0') | |
515 | current_target_desc | |
516 | = file_read_description_xml (target_description_filename); | |
517 | ||
518 | /* Next try to read the description from the current target using | |
519 | target objects. */ | |
520 | if (current_target_desc == NULL) | |
521 | current_target_desc = target_read_description_xml (¤t_target); | |
522 | ||
523 | /* If that failed try a target-specific hook. */ | |
524 | if (current_target_desc == NULL) | |
525 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
526 | |
527 | /* If a non-NULL description was returned, then update the current | |
528 | architecture. */ | |
529 | if (current_target_desc) | |
530 | { | |
531 | struct gdbarch_info info; | |
532 | ||
533 | gdbarch_info_init (&info); | |
534 | info.target_desc = current_target_desc; | |
535 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
536 | warning (_("Architecture rejected target-supplied description")); |
537 | else | |
538 | { | |
539 | struct tdesc_arch_data *data; | |
540 | ||
19ba03f4 SM |
541 | data = ((struct tdesc_arch_data *) |
542 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 543 | if (tdesc_has_registers (current_target_desc) |
f0cddbef | 544 | && data->arch_regs.empty ()) |
123dc839 DJ |
545 | warning (_("Target-supplied registers are not supported " |
546 | "by the current architecture")); | |
547 | } | |
424163ea DJ |
548 | } |
549 | ||
550 | /* Now that we know this description is usable, record that we | |
551 | fetched it. */ | |
552 | target_desc_fetched = 1; | |
553 | } | |
554 | ||
555 | /* Discard any description fetched from the current target, and switch | |
556 | the current architecture to one with no target description. */ | |
557 | ||
558 | void | |
559 | target_clear_description (void) | |
560 | { | |
561 | struct gdbarch_info info; | |
562 | ||
563 | if (!target_desc_fetched) | |
564 | return; | |
565 | ||
566 | target_desc_fetched = 0; | |
567 | current_target_desc = NULL; | |
568 | ||
569 | gdbarch_info_init (&info); | |
570 | if (!gdbarch_update_p (info)) | |
571 | internal_error (__FILE__, __LINE__, | |
572 | _("Could not remove target-supplied description")); | |
573 | } | |
574 | ||
575 | /* Return the global current target description. This should only be | |
576 | used by gdbarch initialization code; most access should be through | |
577 | an existing gdbarch. */ | |
578 | ||
579 | const struct target_desc * | |
580 | target_current_description (void) | |
581 | { | |
582 | if (target_desc_fetched) | |
583 | return current_target_desc; | |
584 | ||
585 | return NULL; | |
586 | } | |
e35359c5 UW |
587 | |
588 | /* Return non-zero if this target description is compatible | |
589 | with the given BFD architecture. */ | |
590 | ||
591 | int | |
592 | tdesc_compatible_p (const struct target_desc *target_desc, | |
593 | const struct bfd_arch_info *arch) | |
594 | { | |
40e2a983 | 595 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
596 | { |
597 | if (compat == arch | |
598 | || arch->compatible (arch, compat) | |
599 | || compat->compatible (compat, arch)) | |
600 | return 1; | |
601 | } | |
602 | ||
603 | return 0; | |
604 | } | |
23181151 DJ |
605 | \f |
606 | ||
123dc839 | 607 | /* Direct accessors for target descriptions. */ |
424163ea | 608 | |
29709017 DJ |
609 | /* Return the string value of a property named KEY, or NULL if the |
610 | property was not specified. */ | |
611 | ||
612 | const char * | |
613 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
614 | { | |
129c10bc SM |
615 | for (const property &prop : target_desc->properties) |
616 | if (prop.key == key) | |
617 | return prop.value.c_str (); | |
29709017 DJ |
618 | |
619 | return NULL; | |
620 | } | |
621 | ||
23181151 DJ |
622 | /* Return the BFD architecture associated with this target |
623 | description, or NULL if no architecture was specified. */ | |
624 | ||
625 | const struct bfd_arch_info * | |
626 | tdesc_architecture (const struct target_desc *target_desc) | |
627 | { | |
628 | return target_desc->arch; | |
629 | } | |
08d16641 PA |
630 | |
631 | /* Return the OSABI associated with this target description, or | |
632 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
633 | ||
634 | enum gdb_osabi | |
635 | tdesc_osabi (const struct target_desc *target_desc) | |
636 | { | |
637 | return target_desc->osabi; | |
638 | } | |
639 | ||
23181151 DJ |
640 | \f |
641 | ||
123dc839 DJ |
642 | /* Return 1 if this target description includes any registers. */ |
643 | ||
644 | int | |
645 | tdesc_has_registers (const struct target_desc *target_desc) | |
646 | { | |
123dc839 DJ |
647 | if (target_desc == NULL) |
648 | return 0; | |
649 | ||
3eea796c | 650 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 651 | if (!feature->registers.empty ()) |
123dc839 DJ |
652 | return 1; |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | /* Return the feature with the given name, if present, or NULL if | |
658 | the named feature is not found. */ | |
659 | ||
660 | const struct tdesc_feature * | |
661 | tdesc_find_feature (const struct target_desc *target_desc, | |
662 | const char *name) | |
663 | { | |
3eea796c | 664 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 665 | if (feature->name == name) |
3eea796c | 666 | return feature.get (); |
123dc839 DJ |
667 | |
668 | return NULL; | |
669 | } | |
670 | ||
671 | /* Return the name of FEATURE. */ | |
672 | ||
673 | const char * | |
674 | tdesc_feature_name (const struct tdesc_feature *feature) | |
675 | { | |
f65ff9f9 | 676 | return feature->name.c_str (); |
123dc839 DJ |
677 | } |
678 | ||
9fd3625f L |
679 | /* Lookup type associated with ID. */ |
680 | ||
681 | struct type * | |
682 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
683 | { | |
f0cddbef SM |
684 | tdesc_arch_data *data |
685 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
9fd3625f | 686 | |
f0cddbef | 687 | for (const tdesc_arch_reg ® : data->arch_regs) |
9fd3625f | 688 | { |
f0cddbef SM |
689 | if (reg.reg |
690 | && reg.reg->tdesc_type | |
691 | && reg.type | |
692 | && reg.reg->tdesc_type->name == id) | |
693 | return reg.type; | |
9fd3625f L |
694 | } |
695 | ||
696 | return NULL; | |
697 | } | |
698 | ||
123dc839 DJ |
699 | /* Support for registers from target descriptions. */ |
700 | ||
701 | /* Construct the per-gdbarch data. */ | |
702 | ||
703 | static void * | |
704 | tdesc_data_init (struct obstack *obstack) | |
705 | { | |
706 | struct tdesc_arch_data *data; | |
707 | ||
708 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
f0cddbef SM |
709 | new (data) tdesc_arch_data (); |
710 | ||
123dc839 DJ |
711 | return data; |
712 | } | |
713 | ||
714 | /* Similar, but for the temporary copy used during architecture | |
715 | initialization. */ | |
716 | ||
717 | struct tdesc_arch_data * | |
718 | tdesc_data_alloc (void) | |
719 | { | |
f0cddbef | 720 | return new tdesc_arch_data (); |
123dc839 DJ |
721 | } |
722 | ||
723 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
724 | to be used (for instance if it was unsuitable for the | |
725 | architecture). */ | |
726 | ||
727 | void | |
728 | tdesc_data_cleanup (void *data_untyped) | |
729 | { | |
19ba03f4 | 730 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 731 | |
f0cddbef | 732 | delete data; |
123dc839 DJ |
733 | } |
734 | ||
735 | /* Search FEATURE for a register named NAME. */ | |
736 | ||
7cc46491 DJ |
737 | static struct tdesc_reg * |
738 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
739 | const char *name) | |
123dc839 | 740 | { |
c9c895b9 | 741 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 742 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 743 | return reg.get (); |
123dc839 | 744 | |
7cc46491 DJ |
745 | return NULL; |
746 | } | |
747 | ||
748 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
749 | ||
750 | int | |
751 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
752 | struct tdesc_arch_data *data, | |
753 | int regno, const char *name) | |
754 | { | |
755 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
756 | ||
757 | if (reg == NULL) | |
758 | return 0; | |
759 | ||
760 | /* Make sure the vector includes a REGNO'th element. */ | |
f0cddbef SM |
761 | while (regno >= data->arch_regs.size ()) |
762 | data->arch_regs.emplace_back (nullptr, nullptr); | |
763 | ||
764 | data->arch_regs[regno] = tdesc_arch_reg (reg, NULL); | |
ad068eab | 765 | |
7cc46491 | 766 | return 1; |
123dc839 DJ |
767 | } |
768 | ||
58d6951d DJ |
769 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
770 | register number to it. */ | |
771 | ||
772 | int | |
773 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
774 | const char *name) | |
775 | { | |
776 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
777 | ||
778 | if (reg == NULL) | |
779 | return 0; | |
780 | ||
781 | return 1; | |
782 | } | |
783 | ||
7cc46491 DJ |
784 | /* Search FEATURE for a register whose name is in NAMES and assign |
785 | REGNO to it. */ | |
123dc839 DJ |
786 | |
787 | int | |
788 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
789 | struct tdesc_arch_data *data, | |
790 | int regno, const char *const names[]) | |
791 | { | |
792 | int i; | |
793 | ||
794 | for (i = 0; names[i] != NULL; i++) | |
795 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
796 | return 1; | |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
7cc46491 DJ |
801 | /* Search FEATURE for a register named NAME, and return its size in |
802 | bits. The register must exist. */ | |
803 | ||
804 | int | |
805 | tdesc_register_size (const struct tdesc_feature *feature, | |
806 | const char *name) | |
807 | { | |
808 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
809 | ||
810 | gdb_assert (reg != NULL); | |
811 | return reg->bitsize; | |
812 | } | |
813 | ||
123dc839 DJ |
814 | /* Look up a register by its GDB internal register number. */ |
815 | ||
ad068eab UW |
816 | static struct tdesc_arch_reg * |
817 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 818 | { |
123dc839 DJ |
819 | struct tdesc_arch_data *data; |
820 | ||
19ba03f4 | 821 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
f0cddbef SM |
822 | if (regno < data->arch_regs.size ()) |
823 | return &data->arch_regs[regno]; | |
123dc839 DJ |
824 | else |
825 | return NULL; | |
826 | } | |
827 | ||
ad068eab UW |
828 | static struct tdesc_reg * |
829 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
830 | { | |
831 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 832 | |
ad068eab UW |
833 | return reg? reg->reg : NULL; |
834 | } | |
835 | ||
f8b73d13 DJ |
836 | /* Return the name of register REGNO, from the target description or |
837 | from an architecture-provided pseudo_register_name method. */ | |
838 | ||
839 | const char * | |
d93859e2 | 840 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 841 | { |
d93859e2 UW |
842 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
843 | int num_regs = gdbarch_num_regs (gdbarch); | |
844 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
845 | |
846 | if (reg != NULL) | |
a8142ee1 | 847 | return reg->name.c_str (); |
123dc839 DJ |
848 | |
849 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
850 | { | |
19ba03f4 SM |
851 | struct tdesc_arch_data *data |
852 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 853 | |
123dc839 | 854 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 855 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
856 | } |
857 | ||
858 | return ""; | |
859 | } | |
860 | ||
58d6951d | 861 | struct type * |
123dc839 DJ |
862 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
863 | { | |
ad068eab UW |
864 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
865 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
866 | int num_regs = gdbarch_num_regs (gdbarch); |
867 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
868 | ||
869 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
870 | { | |
19ba03f4 SM |
871 | struct tdesc_arch_data *data |
872 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 873 | |
123dc839 DJ |
874 | gdb_assert (data->pseudo_register_type != NULL); |
875 | return data->pseudo_register_type (gdbarch, regno); | |
876 | } | |
877 | ||
878 | if (reg == NULL) | |
879 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 880 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 881 | |
ad068eab | 882 | if (arch_reg->type == NULL) |
123dc839 | 883 | { |
ad068eab UW |
884 | /* First check for a predefined or target defined type. */ |
885 | if (reg->tdesc_type) | |
b8df6ca7 | 886 | arch_reg->type = make_gdb_type (gdbarch, reg->tdesc_type); |
ad068eab UW |
887 | |
888 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 889 | else if (reg->type == "float") |
ad068eab UW |
890 | { |
891 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
892 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
893 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
894 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
895 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
896 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
897 | else | |
898 | { | |
899 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 900 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
901 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
902 | } | |
903 | } | |
a8142ee1 | 904 | else if (reg->type == "int") |
ad068eab UW |
905 | { |
906 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
907 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
908 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
909 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
910 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
911 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
912 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
913 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
914 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
915 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
916 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 917 | /* A bit desperate by this point... */ |
ad068eab UW |
918 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
919 | else | |
920 | { | |
921 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 922 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
923 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
924 | } | |
925 | } | |
926 | ||
927 | if (arch_reg->type == NULL) | |
928 | internal_error (__FILE__, __LINE__, | |
929 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 930 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 931 | } |
123dc839 | 932 | |
ad068eab | 933 | return arch_reg->type; |
123dc839 DJ |
934 | } |
935 | ||
936 | static int | |
937 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
938 | { | |
939 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
940 | ||
941 | if (reg != NULL) | |
942 | return reg->target_regnum; | |
943 | else | |
944 | return -1; | |
945 | } | |
946 | ||
947 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
cef0f868 SH |
948 | target description may be classified as general, float, vector or other |
949 | register groups registered with reggroup_add(). Unlike a gdbarch | |
950 | register_reggroup_p method, this function will return -1 if it does not | |
951 | know; the caller should handle registers with no specified group. | |
952 | ||
953 | The names of containing features are not used. This might be extended | |
954 | to display registers in some more useful groupings. | |
123dc839 DJ |
955 | |
956 | The save-restore flag is also implemented here. */ | |
957 | ||
f8b73d13 DJ |
958 | int |
959 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
960 | struct reggroup *reggroup) | |
123dc839 | 961 | { |
123dc839 DJ |
962 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
963 | ||
cef0f868 SH |
964 | if (reg != NULL && !reg->group.empty () |
965 | && (reg->group == reggroup_name (reggroup))) | |
966 | return 1; | |
123dc839 DJ |
967 | |
968 | if (reg != NULL | |
969 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
970 | return reg->save_restore; | |
971 | ||
f8b73d13 DJ |
972 | return -1; |
973 | } | |
974 | ||
975 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
976 | group specified go to the default reggroup function and are handled | |
977 | by type. */ | |
978 | ||
979 | static int | |
980 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
981 | struct reggroup *reggroup) | |
982 | { | |
983 | int num_regs = gdbarch_num_regs (gdbarch); | |
984 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
985 | int ret; | |
986 | ||
987 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
988 | { | |
19ba03f4 SM |
989 | struct tdesc_arch_data *data |
990 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 991 | |
58d6951d DJ |
992 | if (data->pseudo_register_reggroup_p != NULL) |
993 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
994 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
995 | } |
996 | ||
997 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
998 | if (ret != -1) | |
999 | return ret; | |
1000 | ||
123dc839 DJ |
1001 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1002 | } | |
1003 | ||
1004 | /* Record architecture-specific functions to call for pseudo-register | |
1005 | support. */ | |
1006 | ||
1007 | void | |
1008 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1009 | gdbarch_register_name_ftype *pseudo_name) | |
1010 | { | |
19ba03f4 SM |
1011 | struct tdesc_arch_data *data |
1012 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1013 | |
1014 | data->pseudo_register_name = pseudo_name; | |
1015 | } | |
1016 | ||
1017 | void | |
1018 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1019 | gdbarch_register_type_ftype *pseudo_type) | |
1020 | { | |
19ba03f4 SM |
1021 | struct tdesc_arch_data *data |
1022 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1023 | |
1024 | data->pseudo_register_type = pseudo_type; | |
1025 | } | |
1026 | ||
1027 | void | |
1028 | set_tdesc_pseudo_register_reggroup_p | |
1029 | (struct gdbarch *gdbarch, | |
1030 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1031 | { | |
19ba03f4 SM |
1032 | struct tdesc_arch_data *data |
1033 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1034 | |
1035 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1036 | } | |
1037 | ||
1038 | /* Update GDBARCH to use the target description for registers. */ | |
1039 | ||
1040 | void | |
1041 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1042 | const struct target_desc *target_desc, |
123dc839 DJ |
1043 | struct tdesc_arch_data *early_data) |
1044 | { | |
1045 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
1046 | struct tdesc_arch_data *data; |
1047 | htab_t reg_hash; | |
1048 | ||
123dc839 DJ |
1049 | /* We can't use the description for registers if it doesn't describe |
1050 | any. This function should only be called after validating | |
1051 | registers, so the caller should know that registers are | |
1052 | included. */ | |
1053 | gdb_assert (tdesc_has_registers (target_desc)); | |
1054 | ||
19ba03f4 | 1055 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1056 | data->arch_regs = early_data->arch_regs; |
f0cddbef | 1057 | delete early_data; |
123dc839 DJ |
1058 | |
1059 | /* Build up a set of all registers, so that we can assign register | |
1060 | numbers where needed. The hash table expands as necessary, so | |
1061 | the initial size is arbitrary. */ | |
1062 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1063 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1064 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1065 | { |
c9c895b9 | 1066 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1067 | |
c9c895b9 | 1068 | *slot = reg.get (); |
cef0f868 SH |
1069 | /* Add reggroup if its new. */ |
1070 | if (!reg->group.empty ()) | |
1071 | if (reggroup_find (gdbarch, reg->group.c_str ()) == NULL) | |
1072 | reggroup_add (gdbarch, reggroup_gdbarch_new (gdbarch, | |
1073 | reg->group.c_str (), | |
1074 | USER_REGGROUP)); | |
123dc839 DJ |
1075 | } |
1076 | ||
1077 | /* Remove any registers which were assigned numbers by the | |
1078 | architecture. */ | |
f0cddbef SM |
1079 | for (const tdesc_arch_reg &arch_reg : data->arch_regs) |
1080 | if (arch_reg.reg != NULL) | |
1081 | htab_remove_elt (reg_hash, arch_reg.reg); | |
123dc839 DJ |
1082 | |
1083 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1084 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1085 | Iterate over the features, not the hash table, so that the order |
1086 | matches that in the target description. */ | |
1087 | ||
f0cddbef SM |
1088 | gdb_assert (data->arch_regs.size () <= num_regs); |
1089 | while (data->arch_regs.size () < num_regs) | |
1090 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1091 | ||
3eea796c | 1092 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1093 | for (const tdesc_reg_up ® : feature->registers) |
1094 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1095 | { |
f0cddbef | 1096 | data->arch_regs.emplace_back (reg.get (), nullptr); |
123dc839 DJ |
1097 | num_regs++; |
1098 | } | |
1099 | ||
1100 | htab_delete (reg_hash); | |
1101 | ||
1102 | /* Update the architecture. */ | |
1103 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1104 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1105 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1106 | set_gdbarch_remote_register_number (gdbarch, | |
1107 | tdesc_remote_register_number); | |
1108 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1109 | } | |
123dc839 | 1110 | |
f46cd62a | 1111 | /* See common/tdesc.h. */ |
f49ff000 | 1112 | |
123dc839 | 1113 | struct tdesc_feature * |
0abe8a89 YQ |
1114 | tdesc_create_feature (struct target_desc *tdesc, const char *name, |
1115 | const char *xml) | |
123dc839 | 1116 | { |
72ddacb7 | 1117 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1118 | |
3eea796c SM |
1119 | tdesc->features.emplace_back (new_feature); |
1120 | ||
123dc839 DJ |
1121 | return new_feature; |
1122 | } | |
1123 | ||
424163ea DJ |
1124 | struct target_desc * |
1125 | allocate_target_description (void) | |
1126 | { | |
b468ff4c | 1127 | return new target_desc (); |
424163ea | 1128 | } |
29709017 | 1129 | |
23181151 DJ |
1130 | static void |
1131 | free_target_description (void *arg) | |
1132 | { | |
19ba03f4 | 1133 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1134 | |
b468ff4c | 1135 | delete target_desc; |
23181151 DJ |
1136 | } |
1137 | ||
1138 | struct cleanup * | |
1139 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1140 | { | |
1141 | return make_cleanup (free_target_description, target_desc); | |
1142 | } | |
1143 | ||
e35359c5 UW |
1144 | void |
1145 | tdesc_add_compatible (struct target_desc *target_desc, | |
1146 | const struct bfd_arch_info *compatible) | |
1147 | { | |
e35359c5 UW |
1148 | /* If this instance of GDB is compiled without BFD support for the |
1149 | compatible architecture, simply ignore it -- we would not be able | |
1150 | to handle it anyway. */ | |
1151 | if (compatible == NULL) | |
1152 | return; | |
1153 | ||
40e2a983 | 1154 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1155 | if (compat == compatible) |
1156 | internal_error (__FILE__, __LINE__, | |
1157 | _("Attempted to add duplicate " | |
1158 | "compatible architecture \"%s\""), | |
1159 | compatible->printable_name); | |
1160 | ||
40e2a983 | 1161 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1162 | } |
1163 | ||
29709017 DJ |
1164 | void |
1165 | set_tdesc_property (struct target_desc *target_desc, | |
1166 | const char *key, const char *value) | |
1167 | { | |
29709017 DJ |
1168 | gdb_assert (key != NULL && value != NULL); |
1169 | ||
129c10bc SM |
1170 | if (tdesc_property (target_desc, key) != NULL) |
1171 | internal_error (__FILE__, __LINE__, | |
1172 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1173 | |
129c10bc | 1174 | target_desc->properties.emplace_back (key, value); |
29709017 | 1175 | } |
23181151 | 1176 | |
f46cd62a | 1177 | /* See common/tdesc.h. */ |
5f035c07 YQ |
1178 | |
1179 | void | |
1180 | set_tdesc_architecture (struct target_desc *target_desc, | |
1181 | const char *name) | |
1182 | { | |
1183 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1184 | } | |
1185 | ||
23181151 DJ |
1186 | void |
1187 | set_tdesc_architecture (struct target_desc *target_desc, | |
1188 | const struct bfd_arch_info *arch) | |
1189 | { | |
1190 | target_desc->arch = arch; | |
1191 | } | |
08d16641 | 1192 | |
f46cd62a | 1193 | /* See common/tdesc.h. */ |
5f035c07 YQ |
1194 | |
1195 | void | |
1196 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1197 | { | |
1198 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1199 | } | |
1200 | ||
08d16641 PA |
1201 | void |
1202 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1203 | { | |
1204 | target_desc->osabi = osabi; | |
1205 | } | |
23181151 DJ |
1206 | \f |
1207 | ||
1208 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1209 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1210 | ||
1211 | /* Helper functions for the CLI commands. */ | |
1212 | ||
1213 | static void | |
981a3fb3 | 1214 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1215 | { |
635c7e8a | 1216 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1217 | } |
1218 | ||
1219 | static void | |
981a3fb3 | 1220 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1221 | { |
1222 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1223 | } | |
1224 | ||
1225 | static void | |
981a3fb3 | 1226 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1227 | { |
635c7e8a | 1228 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1229 | } |
1230 | ||
1231 | static void | |
eb4c3f4a | 1232 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1233 | struct cmd_list_element *c) |
1234 | { | |
6ecd4729 PA |
1235 | xfree (target_description_filename); |
1236 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1237 | ||
23181151 DJ |
1238 | target_clear_description (); |
1239 | target_find_description (); | |
1240 | } | |
1241 | ||
1242 | static void | |
1243 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1244 | struct cmd_list_element *c, | |
1245 | const char *value) | |
1246 | { | |
6ecd4729 PA |
1247 | value = target_description_filename; |
1248 | ||
23181151 | 1249 | if (value != NULL && *value != '\0') |
3e43a32a | 1250 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1251 | value); |
1252 | else | |
3e43a32a MS |
1253 | printf_filtered (_("The target description will be " |
1254 | "read from the target.\n")); | |
23181151 DJ |
1255 | } |
1256 | ||
1257 | static void | |
e100df1a | 1258 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1259 | { |
1260 | xfree (target_description_filename); | |
1261 | target_description_filename = NULL; | |
1262 | target_clear_description (); | |
1263 | target_find_description (); | |
1264 | } | |
1265 | ||
6eb1e6a8 YQ |
1266 | /* Print target description in C. */ |
1267 | ||
1268 | class print_c_tdesc : public tdesc_element_visitor | |
1269 | { | |
1270 | public: | |
1271 | print_c_tdesc (std::string &filename_after_features) | |
1272 | : m_filename_after_features (filename_after_features) | |
1273 | { | |
1274 | const char *inp; | |
1275 | char *outp; | |
1276 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1277 | ||
1278 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1279 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1280 | if (*inp == '.') | |
1281 | break; | |
1282 | else if (*inp == '-') | |
1283 | *outp++ = '_'; | |
1284 | else | |
1285 | *outp++ = *inp; | |
1286 | *outp = '\0'; | |
1287 | ||
1288 | /* Standard boilerplate. */ | |
1289 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1290 | "-*- buffer-read-only: t -*- vi" | |
1291 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1292 | } |
1293 | ||
1294 | ~print_c_tdesc () | |
1295 | { | |
1296 | xfree (m_function); | |
1297 | } | |
1298 | ||
1299 | void visit_pre (const target_desc *e) override | |
1300 | { | |
25aa13e5 YQ |
1301 | printf_unfiltered (" Original: %s */\n\n", |
1302 | lbasename (m_filename_after_features.c_str ())); | |
1303 | ||
6eb1e6a8 YQ |
1304 | printf_unfiltered ("#include \"defs.h\"\n"); |
1305 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1306 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1307 | printf_unfiltered ("\n"); | |
1308 | ||
1309 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1310 | printf_unfiltered ("static void\n"); | |
1311 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1312 | printf_unfiltered ("{\n"); | |
1313 | printf_unfiltered | |
1314 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1315 | ||
1316 | if (tdesc_architecture (e) != NULL) | |
1317 | { | |
1318 | printf_unfiltered | |
1319 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1320 | tdesc_architecture (e)->printable_name); | |
1321 | printf_unfiltered ("\n"); | |
1322 | } | |
1323 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1324 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1325 | { | |
1326 | printf_unfiltered | |
1327 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1328 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1329 | printf_unfiltered ("\n"); | |
1330 | } | |
1331 | ||
23a8d186 | 1332 | for (const bfd_arch_info_type *compatible : e->compatible) |
40e2a983 SM |
1333 | printf_unfiltered |
1334 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1335 | compatible->printable_name); | |
6eb1e6a8 | 1336 | |
40e2a983 | 1337 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1338 | printf_unfiltered ("\n"); |
1339 | ||
129c10bc SM |
1340 | for (const property &prop : e->properties) |
1341 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1342 | prop.key.c_str (), prop.value.c_str ()); | |
1343 | ||
6eb1e6a8 YQ |
1344 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1345 | } | |
1346 | ||
25aa13e5 | 1347 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1348 | { |
1349 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1350 | e->name.c_str ()); |
6eb1e6a8 YQ |
1351 | } |
1352 | ||
25aa13e5 YQ |
1353 | void visit_post (const tdesc_feature *e) override |
1354 | {} | |
1355 | ||
6eb1e6a8 YQ |
1356 | void visit_post (const target_desc *e) override |
1357 | { | |
1358 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1359 | printf_unfiltered ("}\n"); | |
1360 | } | |
1361 | ||
d4a0e8b5 SM |
1362 | void visit (const tdesc_type_builtin *type) override |
1363 | { | |
1364 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); | |
1365 | } | |
1366 | ||
1367 | void visit (const tdesc_type_vector *type) override | |
6eb1e6a8 | 1368 | { |
d4a0e8b5 | 1369 | if (!m_printed_element_type) |
6eb1e6a8 | 1370 | { |
d4a0e8b5 SM |
1371 | printf_unfiltered (" tdesc_type *element_type;\n"); |
1372 | m_printed_element_type = true; | |
6eb1e6a8 YQ |
1373 | } |
1374 | ||
d4a0e8b5 SM |
1375 | printf_unfiltered |
1376 | (" element_type = tdesc_named_type (feature, \"%s\");\n", | |
1377 | type->element_type->name.c_str ()); | |
1378 | printf_unfiltered | |
1379 | (" tdesc_create_vector (feature, \"%s\", element_type, %d);\n", | |
1380 | type->name.c_str (), type->count); | |
1381 | ||
1382 | printf_unfiltered ("\n"); | |
1383 | } | |
1384 | ||
1385 | void visit (const tdesc_type_with_fields *type) override | |
1386 | { | |
1387 | if (!m_printed_type_with_fields) | |
6eb1e6a8 | 1388 | { |
d4a0e8b5 SM |
1389 | printf_unfiltered (" tdesc_type_with_fields *type_with_fields;\n"); |
1390 | m_printed_type_with_fields = true; | |
1391 | } | |
1392 | ||
6eb1e6a8 YQ |
1393 | switch (type->kind) |
1394 | { | |
6eb1e6a8 YQ |
1395 | case TDESC_TYPE_STRUCT: |
1396 | case TDESC_TYPE_FLAGS: | |
1397 | if (type->kind == TDESC_TYPE_STRUCT) | |
1398 | { | |
1399 | printf_unfiltered | |
d4a0e8b5 | 1400 | (" type_with_fields = tdesc_create_struct (feature, \"%s\");\n", |
082b9140 | 1401 | type->name.c_str ()); |
d4a0e8b5 | 1402 | if (type->size != 0) |
6eb1e6a8 | 1403 | printf_unfiltered |
d4a0e8b5 | 1404 | (" tdesc_set_struct_size (type_with_fields, %d);\n", type->size); |
6eb1e6a8 YQ |
1405 | } |
1406 | else | |
1407 | { | |
1408 | printf_unfiltered | |
d4a0e8b5 SM |
1409 | (" type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", |
1410 | type->name.c_str (), type->size); | |
6eb1e6a8 | 1411 | } |
d4a0e8b5 | 1412 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 YQ |
1413 | { |
1414 | const char *type_name; | |
1415 | ||
d05200d1 SM |
1416 | gdb_assert (f.type != NULL); |
1417 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1418 | |
1419 | /* To minimize changes to generated files, don't emit type | |
1420 | info for fields that have defaulted types. */ | |
d05200d1 | 1421 | if (f.start != -1) |
6eb1e6a8 | 1422 | { |
d05200d1 SM |
1423 | gdb_assert (f.end != -1); |
1424 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1425 | { |
d05200d1 | 1426 | gdb_assert (f.start == f.end); |
6eb1e6a8 | 1427 | printf_unfiltered |
d4a0e8b5 | 1428 | (" tdesc_add_flag (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1429 | f.start, f.name.c_str ()); |
6eb1e6a8 | 1430 | } |
d4a0e8b5 SM |
1431 | else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) |
1432 | || (type->size == 8 | |
d05200d1 | 1433 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1434 | { |
1435 | printf_unfiltered | |
d4a0e8b5 | 1436 | (" tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", |
d05200d1 | 1437 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1438 | } |
1439 | else | |
1440 | { | |
a8d2e585 SM |
1441 | printf_field_type_assignment |
1442 | ("tdesc_named_type (feature, \"%s\");\n", | |
6eb1e6a8 YQ |
1443 | type_name); |
1444 | printf_unfiltered | |
d4a0e8b5 | 1445 | (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," |
6eb1e6a8 | 1446 | " %d, %d, field_type);\n", |
d05200d1 | 1447 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1448 | } |
1449 | } | |
1450 | else /* Not a bitfield. */ | |
1451 | { | |
d05200d1 | 1452 | gdb_assert (f.end == -1); |
6eb1e6a8 | 1453 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
a8d2e585 SM |
1454 | printf_field_type_assignment |
1455 | ("tdesc_named_type (feature, \"%s\");\n", type_name); | |
6eb1e6a8 | 1456 | printf_unfiltered |
d4a0e8b5 | 1457 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1458 | f.name.c_str ()); |
6eb1e6a8 YQ |
1459 | } |
1460 | } | |
1461 | break; | |
1462 | case TDESC_TYPE_UNION: | |
1463 | printf_unfiltered | |
d4a0e8b5 | 1464 | (" type_with_fields = tdesc_create_union (feature, \"%s\");\n", |
082b9140 | 1465 | type->name.c_str ()); |
d4a0e8b5 | 1466 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 | 1467 | { |
a8d2e585 SM |
1468 | printf_field_type_assignment |
1469 | ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); | |
6eb1e6a8 | 1470 | printf_unfiltered |
d4a0e8b5 | 1471 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1472 | f.name.c_str ()); |
6eb1e6a8 YQ |
1473 | } |
1474 | break; | |
1475 | case TDESC_TYPE_ENUM: | |
1476 | printf_unfiltered | |
d4a0e8b5 SM |
1477 | (" type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", |
1478 | type->name.c_str (), type->size); | |
1479 | for (const tdesc_type_field &f : type->fields) | |
6eb1e6a8 | 1480 | printf_unfiltered |
d4a0e8b5 | 1481 | (" tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1482 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1483 | break; |
1484 | default: | |
082b9140 | 1485 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 | 1486 | } |
d4a0e8b5 | 1487 | |
6eb1e6a8 YQ |
1488 | printf_unfiltered ("\n"); |
1489 | } | |
1490 | ||
1491 | void visit (const tdesc_reg *reg) override | |
1492 | { | |
1493 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1494 | reg->name.c_str (), reg->target_regnum, |
1495 | reg->save_restore); | |
1496 | if (!reg->group.empty ()) | |
1497 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1498 | else |
1499 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1500 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1501 | } |
1502 | ||
25aa13e5 YQ |
1503 | protected: |
1504 | std::string m_filename_after_features; | |
1505 | ||
6eb1e6a8 | 1506 | private: |
a8d2e585 SM |
1507 | |
1508 | /* Print an assignment to the field_type variable. Print the declaration | |
1509 | of field_type if that has not been done yet. */ | |
6e8c24fe | 1510 | ATTRIBUTE_PRINTF (2, 3) |
a8d2e585 SM |
1511 | void printf_field_type_assignment (const char *fmt, ...) |
1512 | { | |
1513 | if (!m_printed_field_type) | |
1514 | { | |
1515 | printf_unfiltered (" tdesc_type *field_type;\n"); | |
1516 | m_printed_field_type = true; | |
1517 | } | |
1518 | ||
1519 | printf_unfiltered (" field_type = "); | |
1520 | ||
1521 | va_list args; | |
1522 | va_start (args, fmt); | |
1523 | vprintf_unfiltered (fmt, args); | |
1524 | va_end (args); | |
1525 | } | |
1526 | ||
6eb1e6a8 | 1527 | char *m_function; |
d4a0e8b5 SM |
1528 | |
1529 | /* Did we print "struct tdesc_type *element_type;" yet? */ | |
1530 | bool m_printed_element_type = false; | |
1531 | ||
1532 | /* Did we print "struct tdesc_type_with_fields *element_type;" yet? */ | |
1533 | bool m_printed_type_with_fields = false; | |
1534 | ||
1535 | /* Did we print "struct tdesc_type *field_type;" yet? */ | |
6eb1e6a8 | 1536 | bool m_printed_field_type = false; |
6eb1e6a8 YQ |
1537 | }; |
1538 | ||
25aa13e5 YQ |
1539 | /* Print target description feature in C. */ |
1540 | ||
1541 | class print_c_feature : public print_c_tdesc | |
1542 | { | |
1543 | public: | |
1544 | print_c_feature (std::string &file) | |
1545 | : print_c_tdesc (file) | |
1546 | { | |
1547 | /* Trim ".tmp". */ | |
1548 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
1549 | ||
1550 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
1551 | } | |
1552 | ||
1553 | void visit_pre (const target_desc *e) override | |
1554 | { | |
1555 | printf_unfiltered (" Original: %s */\n\n", | |
1556 | lbasename (m_filename_after_features.c_str ())); | |
1557 | ||
f46cd62a | 1558 | printf_unfiltered ("#include \"common/tdesc.h\"\n"); |
25aa13e5 YQ |
1559 | printf_unfiltered ("\n"); |
1560 | } | |
1561 | ||
1562 | void visit_post (const target_desc *e) override | |
1563 | {} | |
1564 | ||
1565 | void visit_pre (const tdesc_feature *e) override | |
1566 | { | |
1567 | std::string name (m_filename_after_features); | |
1568 | ||
1569 | auto pos = name.find_first_of ('.'); | |
1570 | ||
1571 | name = name.substr (0, pos); | |
1572 | std::replace (name.begin (), name.end (), '/', '_'); | |
1573 | std::replace (name.begin (), name.end (), '-', '_'); | |
1574 | ||
1575 | printf_unfiltered ("static int\n"); | |
1576 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
1577 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
1578 | ||
1579 | printf_unfiltered ("{\n"); | |
1580 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
1581 | |
1582 | printf_unfiltered | |
1583 | ("\n feature = tdesc_create_feature (result, \"%s\", \"%s\");\n", | |
f65ff9f9 | 1584 | e->name.c_str (), lbasename (m_filename_after_features.c_str ())); |
25aa13e5 YQ |
1585 | } |
1586 | ||
1587 | void visit_post (const tdesc_feature *e) override | |
1588 | { | |
1589 | printf_unfiltered (" return regnum;\n"); | |
1590 | printf_unfiltered ("}\n"); | |
1591 | } | |
1592 | ||
1593 | void visit (const tdesc_reg *reg) override | |
1594 | { | |
ea03d0d3 YQ |
1595 | /* Most "reg" in XML target descriptions don't have "regnum" |
1596 | attribute, so the register number is allocated sequentially. | |
1597 | In case that reg has "regnum" attribute, register number | |
1598 | should be set by that explicitly. */ | |
1599 | ||
1600 | if (reg->target_regnum < m_next_regnum) | |
1601 | { | |
1602 | /* The integrity check, it can catch some errors on register | |
1603 | number collision, like this, | |
1604 | ||
1605 | <reg name="x0" bitsize="32"/> | |
1606 | <reg name="x1" bitsize="32"/> | |
1607 | <reg name="x2" bitsize="32"/> | |
1608 | <reg name="x3" bitsize="32"/> | |
1609 | <reg name="ps" bitsize="32" regnum="3"/> | |
1610 | ||
1611 | but it also has false negatives. The target description | |
1612 | below is correct, | |
1613 | ||
1614 | <reg name="x1" bitsize="32" regnum="1"/> | |
1615 | <reg name="x3" bitsize="32" regnum="3"/> | |
1616 | <reg name="x2" bitsize="32" regnum="2"/> | |
1617 | <reg name="x4" bitsize="32" regnum="4"/> | |
1618 | ||
1619 | but it is not a good practice, so still error on this, | |
1620 | and also print the message so that it can be saved in the | |
1621 | generated c file. */ | |
1622 | ||
1623 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
1624 | reg->target_regnum); | |
1625 | printf_unfiltered ("is not the largest number (%d).\n", | |
1626 | m_next_regnum); | |
1627 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
1628 | reg->target_regnum, m_next_regnum); | |
1629 | } | |
1630 | ||
1631 | if (reg->target_regnum > m_next_regnum) | |
1632 | { | |
1633 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
1634 | m_next_regnum = reg->target_regnum; | |
1635 | } | |
1636 | ||
25aa13e5 | 1637 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
1638 | reg->name.c_str (), reg->save_restore); |
1639 | if (!reg->group.empty ()) | |
1640 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
1641 | else |
1642 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1643 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
1644 | |
1645 | m_next_regnum++; | |
25aa13e5 YQ |
1646 | } |
1647 | ||
ea03d0d3 YQ |
1648 | private: |
1649 | /* The register number to use for the next register we see. */ | |
1650 | int m_next_regnum = 0; | |
25aa13e5 YQ |
1651 | }; |
1652 | ||
81adfced | 1653 | static void |
e100df1a | 1654 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
1655 | { |
1656 | const struct target_desc *tdesc; | |
6eb1e6a8 | 1657 | const char *filename; |
81adfced | 1658 | |
8e2141c6 YQ |
1659 | if (args == NULL) |
1660 | { | |
1661 | /* Use the global target-supplied description, not the current | |
1662 | architecture's. This lets a GDB for one architecture generate C | |
1663 | for another architecture's description, even though the gdbarch | |
1664 | initialization code will reject the new description. */ | |
1665 | tdesc = current_target_desc; | |
1666 | filename = target_description_filename; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | /* Use the target description from the XML file. */ | |
1671 | filename = args; | |
1672 | tdesc = file_read_description_xml (filename); | |
1673 | } | |
1674 | ||
81adfced DJ |
1675 | if (tdesc == NULL) |
1676 | error (_("There is no target description to print.")); | |
1677 | ||
8e2141c6 | 1678 | if (filename == NULL) |
81adfced DJ |
1679 | error (_("The current target description did not come from an XML file.")); |
1680 | ||
6eb1e6a8 YQ |
1681 | std::string filename_after_features (filename); |
1682 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 1683 | |
6eb1e6a8 YQ |
1684 | if (loc != std::string::npos) |
1685 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 1686 | |
25aa13e5 YQ |
1687 | /* Print c files for target features instead of target descriptions, |
1688 | because c files got from target features are more flexible than the | |
1689 | counterparts. */ | |
6c73f67f YQ |
1690 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
1691 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 1692 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
1693 | || startswith (filename_after_features.c_str (), "tic6x-") |
1694 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
1695 | { |
1696 | print_c_feature v (filename_after_features); | |
81adfced | 1697 | |
25aa13e5 YQ |
1698 | tdesc->accept (v); |
1699 | } | |
1700 | else | |
1701 | { | |
1702 | print_c_tdesc v (filename_after_features); | |
1703 | ||
1704 | tdesc->accept (v); | |
1705 | } | |
81adfced DJ |
1706 | } |
1707 | ||
27d41eac YQ |
1708 | namespace selftests { |
1709 | ||
1710 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
1711 | ||
1712 | #if GDB_SELF_TEST | |
1713 | ||
1714 | /* See target-descritpions.h. */ | |
1715 | ||
1716 | void | |
1717 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
1718 | { | |
1719 | xml_tdesc.emplace_back (xml_file, tdesc); | |
1720 | } | |
1721 | #endif | |
1722 | ||
1723 | } | |
1724 | ||
1725 | /* Check that the target descriptions created dynamically by | |
1726 | architecture-specific code equal the descriptions created from XML files | |
1727 | found in the specified directory DIR. */ | |
1728 | ||
1729 | static void | |
e100df1a | 1730 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
1731 | { |
1732 | if (dir == NULL) | |
1733 | error (_("Missing dir name")); | |
1734 | ||
1735 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
1736 | std::string feature_dir (dir1.get ()); | |
1737 | unsigned int failed = 0; | |
1738 | ||
1739 | for (auto const &e : selftests::xml_tdesc) | |
1740 | { | |
1741 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
1742 | const target_desc *tdesc | |
1743 | = file_read_description_xml (tdesc_xml.data ()); | |
1744 | ||
1745 | if (tdesc == NULL || *tdesc != *e.second) | |
1746 | failed++; | |
1747 | } | |
1748 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
1749 | (long) selftests::xml_tdesc.size (), failed); | |
1750 | } | |
1751 | ||
23181151 DJ |
1752 | void |
1753 | _initialize_target_descriptions (void) | |
1754 | { | |
123dc839 DJ |
1755 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1756 | ||
23181151 DJ |
1757 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1758 | Set target description specific variables."), | |
1759 | &tdesc_set_cmdlist, "set tdesc ", | |
1760 | 0 /* allow-unknown */, &setlist); | |
1761 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1762 | Show target description specific variables."), | |
1763 | &tdesc_show_cmdlist, "show tdesc ", | |
1764 | 0 /* allow-unknown */, &showlist); | |
1765 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1766 | Unset target description specific variables."), | |
1767 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1768 | 0 /* allow-unknown */, &unsetlist); | |
1769 | ||
1770 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 1771 | &tdesc_filename_cmd_string, |
23181151 DJ |
1772 | _("\ |
1773 | Set the file to read for an XML target description"), _("\ | |
1774 | Show the file to read for an XML target description"), _("\ | |
1775 | When set, GDB will read the target description from a local\n\ | |
1776 | file instead of querying the remote target."), | |
1777 | set_tdesc_filename_cmd, | |
1778 | show_tdesc_filename_cmd, | |
1779 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1780 | ||
1781 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1782 | Unset the file to read for an XML target description. When unset,\n\ | |
1783 | GDB will read the description from the target."), | |
1784 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1785 | |
1786 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1787 | Print the current target description as a C source file."), | |
1788 | &maintenanceprintlist); | |
27d41eac YQ |
1789 | |
1790 | cmd_list_element *cmd; | |
1791 | ||
1792 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
1793 | maintenance_check_xml_descriptions, _("\ | |
1794 | Check the target descriptions created in GDB equal the descriptions\n\ | |
1795 | created from XML files in the directory.\n\ | |
1796 | The parameter is the directory name."), | |
1797 | &maintenancechecklist); | |
1798 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 1799 | } |