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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 ()); | |
d4a0e8b5 | 192 | |
b8df6ca7 AH |
193 | for (const tdesc_type_field &f : e->fields) |
194 | { | |
195 | if (f.start != -1 && f.end != -1) | |
196 | { | |
197 | /* Bitfield. */ | |
198 | struct field *fld; | |
199 | struct type *field_gdb_type; | |
200 | int bitsize, total_size; | |
201 | ||
202 | /* This invariant should be preserved while creating types. */ | |
203 | gdb_assert (e->size != 0); | |
204 | if (f.type != NULL) | |
205 | field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
206 | else if (e->size > 4) | |
207 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint64; | |
208 | else | |
209 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint32; | |
210 | ||
211 | fld = append_composite_type_field_raw | |
212 | (m_type, xstrdup (f.name.c_str ()), field_gdb_type); | |
213 | ||
214 | /* For little-endian, BITPOS counts from the LSB of | |
215 | the structure and marks the LSB of the field. For | |
216 | big-endian, BITPOS counts from the MSB of the | |
217 | structure and marks the MSB of the field. Either | |
218 | way, it is the number of bits to the "left" of the | |
219 | field. To calculate this in big-endian, we need | |
220 | the total size of the structure. */ | |
221 | bitsize = f.end - f.start + 1; | |
222 | total_size = e->size * TARGET_CHAR_BIT; | |
223 | if (gdbarch_bits_big_endian (m_gdbarch)) | |
224 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); | |
225 | else | |
226 | SET_FIELD_BITPOS (fld[0], f.start); | |
227 | FIELD_BITSIZE (fld[0]) = bitsize; | |
228 | } | |
229 | else | |
230 | { | |
231 | gdb_assert (f.start == -1 && f.end == -1); | |
232 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
233 | append_composite_type_field (m_type, | |
d4a0e8b5 | 234 | xstrdup (f.name.c_str ()), |
b8df6ca7 AH |
235 | field_gdb_type); |
236 | } | |
237 | } | |
d4a0e8b5 | 238 | |
b8df6ca7 AH |
239 | if (e->size != 0) |
240 | TYPE_LENGTH (m_type) = e->size; | |
241 | } | |
d4a0e8b5 | 242 | |
b8df6ca7 AH |
243 | void make_gdb_type_union (const tdesc_type_with_fields *e) |
244 | { | |
245 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_UNION); | |
246 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
d4a0e8b5 | 247 | |
b8df6ca7 AH |
248 | for (const tdesc_type_field &f : e->fields) |
249 | { | |
250 | type* field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
251 | append_composite_type_field (m_type, xstrdup (f.name.c_str ()), | |
252 | field_gdb_type); | |
253 | ||
254 | /* If any of the children of a union are vectors, flag the | |
255 | union as a vector also. This allows e.g. a union of two | |
256 | vector types to show up automatically in "info vector". */ | |
257 | if (TYPE_VECTOR (field_gdb_type)) | |
258 | TYPE_VECTOR (m_type) = 1; | |
259 | } | |
260 | } | |
d4a0e8b5 | 261 | |
b8df6ca7 | 262 | void make_gdb_type_flags (const tdesc_type_with_fields *e) |
d4a0e8b5 | 263 | { |
b8df6ca7 AH |
264 | m_type = arch_flags_type (m_gdbarch, e->name.c_str (), |
265 | e->size * TARGET_CHAR_BIT); | |
266 | ||
267 | for (const tdesc_type_field &f : e->fields) | |
268 | { | |
269 | int bitsize = f.end - f.start + 1; | |
270 | ||
271 | gdb_assert (f.type != NULL); | |
272 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
273 | append_flags_type_field (m_type, f.start, bitsize, | |
274 | field_gdb_type, f.name.c_str ()); | |
275 | } | |
d4a0e8b5 SM |
276 | } |
277 | ||
b8df6ca7 AH |
278 | void make_gdb_type_enum (const tdesc_type_with_fields *e) |
279 | { | |
280 | m_type = arch_type (m_gdbarch, TYPE_CODE_ENUM, e->size * TARGET_CHAR_BIT, | |
281 | e->name.c_str ()); | |
d4a0e8b5 | 282 | |
b8df6ca7 AH |
283 | TYPE_UNSIGNED (m_type) = 1; |
284 | for (const tdesc_type_field &f : e->fields) | |
285 | { | |
286 | struct field *fld | |
287 | = append_composite_type_field_raw (m_type, | |
288 | xstrdup (f.name.c_str ()), | |
289 | NULL); | |
d4a0e8b5 | 290 | |
b8df6ca7 AH |
291 | SET_FIELD_BITPOS (fld[0], f.start); |
292 | } | |
293 | } | |
294 | ||
295 | /* The gdbarch used. */ | |
296 | struct gdbarch *m_gdbarch; | |
297 | ||
298 | /* The type created. */ | |
299 | type *m_type; | |
300 | }; | |
301 | ||
302 | gdb_type_creator gdb_type (gdbarch); | |
303 | ttype->accept (gdb_type); | |
304 | return gdb_type.get_type (); | |
305 | } | |
123dc839 | 306 | |
123dc839 DJ |
307 | /* A target description. */ |
308 | ||
6eb1e6a8 | 309 | struct target_desc : tdesc_element |
424163ea | 310 | { |
b468ff4c YQ |
311 | target_desc () |
312 | {} | |
313 | ||
3eea796c | 314 | virtual ~target_desc () = default; |
b468ff4c YQ |
315 | |
316 | target_desc (const target_desc &) = delete; | |
317 | void operator= (const target_desc &) = delete; | |
318 | ||
23181151 | 319 | /* The architecture reported by the target, if any. */ |
b468ff4c | 320 | const struct bfd_arch_info *arch = NULL; |
23181151 | 321 | |
08d16641 PA |
322 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
323 | otherwise. */ | |
b468ff4c | 324 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 325 | |
e35359c5 | 326 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 327 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 328 | |
29709017 | 329 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 330 | std::vector<property> properties; |
123dc839 DJ |
331 | |
332 | /* The features associated with this target. */ | |
858c9d13 | 333 | std::vector<tdesc_feature_up> features; |
6eb1e6a8 | 334 | |
e98577a9 AH |
335 | /* Used to cache the generated xml version of the target description. */ |
336 | mutable char *xmltarget = nullptr; | |
337 | ||
6eb1e6a8 YQ |
338 | void accept (tdesc_element_visitor &v) const override |
339 | { | |
340 | v.visit_pre (this); | |
341 | ||
3eea796c | 342 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
343 | feature->accept (v); |
344 | ||
345 | v.visit_post (this); | |
346 | } | |
27d41eac YQ |
347 | |
348 | bool operator== (const target_desc &other) const | |
349 | { | |
350 | if (arch != other.arch) | |
351 | return false; | |
352 | ||
353 | if (osabi != other.osabi) | |
354 | return false; | |
355 | ||
3eea796c | 356 | if (features.size () != other.features.size ()) |
27d41eac YQ |
357 | return false; |
358 | ||
3eea796c | 359 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 360 | { |
3eea796c SM |
361 | const tdesc_feature_up &feature1 = features[ix]; |
362 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 363 | |
3eea796c | 364 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
365 | return false; |
366 | } | |
367 | ||
368 | return true; | |
369 | } | |
370 | ||
371 | bool operator!= (const target_desc &other) const | |
372 | { | |
373 | return !(*this == other); | |
374 | } | |
123dc839 DJ |
375 | }; |
376 | ||
377 | /* Per-architecture data associated with a target description. The | |
378 | target description may be shared by multiple architectures, but | |
379 | this data is private to one gdbarch. */ | |
380 | ||
f0cddbef | 381 | struct tdesc_arch_reg |
ad068eab | 382 | { |
f0cddbef SM |
383 | tdesc_arch_reg (tdesc_reg *reg_, struct type *type_) |
384 | : reg (reg_), type (type_) | |
385 | {} | |
386 | ||
ad068eab UW |
387 | struct tdesc_reg *reg; |
388 | struct type *type; | |
f0cddbef | 389 | }; |
ad068eab | 390 | |
123dc839 DJ |
391 | struct tdesc_arch_data |
392 | { | |
ad068eab | 393 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
394 | During initialization of the gdbarch this list is used to store |
395 | registers which the architecture assigns a fixed register number. | |
396 | Registers which are NULL in this array, or off the end, are | |
397 | treated as zero-sized and nameless (i.e. placeholders in the | |
398 | numbering). */ | |
f0cddbef | 399 | std::vector<tdesc_arch_reg> arch_regs; |
123dc839 DJ |
400 | |
401 | /* Functions which report the register name, type, and reggroups for | |
402 | pseudo-registers. */ | |
f0cddbef SM |
403 | gdbarch_register_name_ftype *pseudo_register_name = NULL; |
404 | gdbarch_register_type_ftype *pseudo_register_type = NULL; | |
405 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p = NULL; | |
424163ea DJ |
406 | }; |
407 | ||
6ecd4729 PA |
408 | /* Info about an inferior's target description. There's one of these |
409 | for each inferior. */ | |
424163ea | 410 | |
6ecd4729 PA |
411 | struct target_desc_info |
412 | { | |
413 | /* A flag indicating that a description has already been fetched | |
414 | from the target, so it should not be queried again. */ | |
415 | ||
416 | int fetched; | |
424163ea | 417 | |
6ecd4729 PA |
418 | /* The description fetched from the target, or NULL if the target |
419 | did not supply any description. Only valid when | |
420 | target_desc_fetched is set. Only the description initialization | |
421 | code should access this; normally, the description should be | |
422 | accessed through the gdbarch object. */ | |
424163ea | 423 | |
6ecd4729 | 424 | const struct target_desc *tdesc; |
424163ea | 425 | |
6ecd4729 PA |
426 | /* The filename to read a target description from, as set by "set |
427 | tdesc filename ..." */ | |
424163ea | 428 | |
6ecd4729 PA |
429 | char *filename; |
430 | }; | |
23181151 | 431 | |
6ecd4729 PA |
432 | /* Get the inferior INF's target description info, allocating one on |
433 | the stop if necessary. */ | |
23181151 | 434 | |
6ecd4729 PA |
435 | static struct target_desc_info * |
436 | get_tdesc_info (struct inferior *inf) | |
437 | { | |
438 | if (inf->tdesc_info == NULL) | |
439 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
440 | return inf->tdesc_info; | |
441 | } | |
23181151 | 442 | |
123dc839 DJ |
443 | /* A handle for architecture-specific data associated with the |
444 | target description (see struct tdesc_arch_data). */ | |
445 | ||
446 | static struct gdbarch_data *tdesc_data; | |
447 | ||
6ecd4729 PA |
448 | /* See target-descriptions.h. */ |
449 | ||
450 | int | |
451 | target_desc_info_from_user_p (struct target_desc_info *info) | |
452 | { | |
453 | return info != NULL && info->filename != NULL; | |
454 | } | |
455 | ||
456 | /* See target-descriptions.h. */ | |
457 | ||
458 | void | |
459 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
460 | { | |
461 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
462 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
463 | ||
464 | dest->fetched = src->fetched; | |
465 | dest->tdesc = src->tdesc; | |
466 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
467 | } | |
468 | ||
469 | /* See target-descriptions.h. */ | |
470 | ||
471 | void | |
472 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
473 | { | |
474 | if (tdesc_info != NULL) | |
475 | { | |
476 | xfree (tdesc_info->filename); | |
477 | xfree (tdesc_info); | |
478 | } | |
479 | } | |
480 | ||
481 | /* Convenience helper macros. */ | |
482 | ||
483 | #define target_desc_fetched \ | |
484 | get_tdesc_info (current_inferior ())->fetched | |
485 | #define current_target_desc \ | |
486 | get_tdesc_info (current_inferior ())->tdesc | |
487 | #define target_description_filename \ | |
488 | get_tdesc_info (current_inferior ())->filename | |
489 | ||
490 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
491 | ||
492 | static char *tdesc_filename_cmd_string; | |
493 | ||
424163ea DJ |
494 | /* Fetch the current target's description, and switch the current |
495 | architecture to one which incorporates that description. */ | |
496 | ||
497 | void | |
498 | target_find_description (void) | |
499 | { | |
500 | /* If we've already fetched a description from the target, don't do | |
501 | it again. This allows a target to fetch the description early, | |
502 | during its to_open or to_create_inferior, if it needs extra | |
503 | information about the target to initialize. */ | |
504 | if (target_desc_fetched) | |
505 | return; | |
506 | ||
507 | /* The current architecture should not have any target description | |
508 | specified. It should have been cleared, e.g. when we | |
509 | disconnected from the previous target. */ | |
f5656ead | 510 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 511 | |
23181151 DJ |
512 | /* First try to fetch an XML description from the user-specified |
513 | file. */ | |
514 | current_target_desc = NULL; | |
515 | if (target_description_filename != NULL | |
516 | && *target_description_filename != '\0') | |
517 | current_target_desc | |
518 | = file_read_description_xml (target_description_filename); | |
519 | ||
520 | /* Next try to read the description from the current target using | |
521 | target objects. */ | |
522 | if (current_target_desc == NULL) | |
8b88a78e | 523 | current_target_desc = target_read_description_xml (current_top_target ()); |
23181151 DJ |
524 | |
525 | /* If that failed try a target-specific hook. */ | |
526 | if (current_target_desc == NULL) | |
8b88a78e | 527 | current_target_desc = target_read_description (current_top_target ()); |
424163ea DJ |
528 | |
529 | /* If a non-NULL description was returned, then update the current | |
530 | architecture. */ | |
531 | if (current_target_desc) | |
532 | { | |
533 | struct gdbarch_info info; | |
534 | ||
535 | gdbarch_info_init (&info); | |
536 | info.target_desc = current_target_desc; | |
537 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
538 | warning (_("Architecture rejected target-supplied description")); |
539 | else | |
540 | { | |
541 | struct tdesc_arch_data *data; | |
542 | ||
19ba03f4 SM |
543 | data = ((struct tdesc_arch_data *) |
544 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 545 | if (tdesc_has_registers (current_target_desc) |
f0cddbef | 546 | && data->arch_regs.empty ()) |
123dc839 DJ |
547 | warning (_("Target-supplied registers are not supported " |
548 | "by the current architecture")); | |
549 | } | |
424163ea DJ |
550 | } |
551 | ||
552 | /* Now that we know this description is usable, record that we | |
553 | fetched it. */ | |
554 | target_desc_fetched = 1; | |
555 | } | |
556 | ||
557 | /* Discard any description fetched from the current target, and switch | |
558 | the current architecture to one with no target description. */ | |
559 | ||
560 | void | |
561 | target_clear_description (void) | |
562 | { | |
563 | struct gdbarch_info info; | |
564 | ||
565 | if (!target_desc_fetched) | |
566 | return; | |
567 | ||
568 | target_desc_fetched = 0; | |
569 | current_target_desc = NULL; | |
570 | ||
571 | gdbarch_info_init (&info); | |
572 | if (!gdbarch_update_p (info)) | |
573 | internal_error (__FILE__, __LINE__, | |
574 | _("Could not remove target-supplied description")); | |
575 | } | |
576 | ||
577 | /* Return the global current target description. This should only be | |
578 | used by gdbarch initialization code; most access should be through | |
579 | an existing gdbarch. */ | |
580 | ||
581 | const struct target_desc * | |
582 | target_current_description (void) | |
583 | { | |
584 | if (target_desc_fetched) | |
585 | return current_target_desc; | |
586 | ||
587 | return NULL; | |
588 | } | |
e35359c5 UW |
589 | |
590 | /* Return non-zero if this target description is compatible | |
591 | with the given BFD architecture. */ | |
592 | ||
593 | int | |
594 | tdesc_compatible_p (const struct target_desc *target_desc, | |
595 | const struct bfd_arch_info *arch) | |
596 | { | |
40e2a983 | 597 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
598 | { |
599 | if (compat == arch | |
600 | || arch->compatible (arch, compat) | |
601 | || compat->compatible (compat, arch)) | |
602 | return 1; | |
603 | } | |
604 | ||
605 | return 0; | |
606 | } | |
23181151 DJ |
607 | \f |
608 | ||
123dc839 | 609 | /* Direct accessors for target descriptions. */ |
424163ea | 610 | |
29709017 DJ |
611 | /* Return the string value of a property named KEY, or NULL if the |
612 | property was not specified. */ | |
613 | ||
614 | const char * | |
615 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
616 | { | |
129c10bc SM |
617 | for (const property &prop : target_desc->properties) |
618 | if (prop.key == key) | |
619 | return prop.value.c_str (); | |
29709017 DJ |
620 | |
621 | return NULL; | |
622 | } | |
623 | ||
23181151 DJ |
624 | /* Return the BFD architecture associated with this target |
625 | description, or NULL if no architecture was specified. */ | |
626 | ||
627 | const struct bfd_arch_info * | |
628 | tdesc_architecture (const struct target_desc *target_desc) | |
629 | { | |
630 | return target_desc->arch; | |
631 | } | |
08d16641 | 632 | |
d278f585 AH |
633 | /* See common/tdesc.h. */ |
634 | ||
635 | const char * | |
636 | tdesc_architecture_name (const struct target_desc *target_desc) | |
637 | { | |
638 | return target_desc->arch->printable_name; | |
639 | } | |
640 | ||
08d16641 PA |
641 | /* Return the OSABI associated with this target description, or |
642 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
643 | ||
644 | enum gdb_osabi | |
645 | tdesc_osabi (const struct target_desc *target_desc) | |
646 | { | |
647 | return target_desc->osabi; | |
648 | } | |
649 | ||
d278f585 AH |
650 | /* See common/tdesc.h. */ |
651 | ||
652 | const char * | |
653 | tdesc_osabi_name (const struct target_desc *target_desc) | |
654 | { | |
655 | enum gdb_osabi osabi = tdesc_osabi (target_desc); | |
656 | if (osabi > GDB_OSABI_UNKNOWN && osabi < GDB_OSABI_INVALID) | |
657 | return gdbarch_osabi_name (osabi); | |
658 | return nullptr; | |
659 | } | |
23181151 | 660 | |
123dc839 DJ |
661 | /* Return 1 if this target description includes any registers. */ |
662 | ||
663 | int | |
664 | tdesc_has_registers (const struct target_desc *target_desc) | |
665 | { | |
123dc839 DJ |
666 | if (target_desc == NULL) |
667 | return 0; | |
668 | ||
3eea796c | 669 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 670 | if (!feature->registers.empty ()) |
123dc839 DJ |
671 | return 1; |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | /* Return the feature with the given name, if present, or NULL if | |
677 | the named feature is not found. */ | |
678 | ||
679 | const struct tdesc_feature * | |
680 | tdesc_find_feature (const struct target_desc *target_desc, | |
681 | const char *name) | |
682 | { | |
3eea796c | 683 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 684 | if (feature->name == name) |
3eea796c | 685 | return feature.get (); |
123dc839 DJ |
686 | |
687 | return NULL; | |
688 | } | |
689 | ||
690 | /* Return the name of FEATURE. */ | |
691 | ||
692 | const char * | |
693 | tdesc_feature_name (const struct tdesc_feature *feature) | |
694 | { | |
f65ff9f9 | 695 | return feature->name.c_str (); |
123dc839 DJ |
696 | } |
697 | ||
9fd3625f L |
698 | /* Lookup type associated with ID. */ |
699 | ||
700 | struct type * | |
701 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
702 | { | |
f0cddbef SM |
703 | tdesc_arch_data *data |
704 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
9fd3625f | 705 | |
f0cddbef | 706 | for (const tdesc_arch_reg ® : data->arch_regs) |
9fd3625f | 707 | { |
f0cddbef SM |
708 | if (reg.reg |
709 | && reg.reg->tdesc_type | |
710 | && reg.type | |
711 | && reg.reg->tdesc_type->name == id) | |
712 | return reg.type; | |
9fd3625f L |
713 | } |
714 | ||
715 | return NULL; | |
716 | } | |
717 | ||
123dc839 DJ |
718 | /* Support for registers from target descriptions. */ |
719 | ||
720 | /* Construct the per-gdbarch data. */ | |
721 | ||
722 | static void * | |
723 | tdesc_data_init (struct obstack *obstack) | |
724 | { | |
284a0e3c | 725 | return obstack_new<tdesc_arch_data> (obstack); |
123dc839 DJ |
726 | } |
727 | ||
728 | /* Similar, but for the temporary copy used during architecture | |
729 | initialization. */ | |
730 | ||
731 | struct tdesc_arch_data * | |
732 | tdesc_data_alloc (void) | |
733 | { | |
f0cddbef | 734 | return new tdesc_arch_data (); |
123dc839 DJ |
735 | } |
736 | ||
737 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
738 | to be used (for instance if it was unsuitable for the | |
739 | architecture). */ | |
740 | ||
741 | void | |
742 | tdesc_data_cleanup (void *data_untyped) | |
743 | { | |
19ba03f4 | 744 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 745 | |
f0cddbef | 746 | delete data; |
123dc839 DJ |
747 | } |
748 | ||
749 | /* Search FEATURE for a register named NAME. */ | |
750 | ||
7cc46491 DJ |
751 | static struct tdesc_reg * |
752 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
753 | const char *name) | |
123dc839 | 754 | { |
c9c895b9 | 755 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 756 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 757 | return reg.get (); |
123dc839 | 758 | |
7cc46491 DJ |
759 | return NULL; |
760 | } | |
761 | ||
762 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
763 | ||
764 | int | |
765 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
766 | struct tdesc_arch_data *data, | |
767 | int regno, const char *name) | |
768 | { | |
769 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
770 | ||
771 | if (reg == NULL) | |
772 | return 0; | |
773 | ||
774 | /* Make sure the vector includes a REGNO'th element. */ | |
f0cddbef SM |
775 | while (regno >= data->arch_regs.size ()) |
776 | data->arch_regs.emplace_back (nullptr, nullptr); | |
777 | ||
778 | data->arch_regs[regno] = tdesc_arch_reg (reg, NULL); | |
ad068eab | 779 | |
7cc46491 | 780 | return 1; |
123dc839 DJ |
781 | } |
782 | ||
58d6951d DJ |
783 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
784 | register number to it. */ | |
785 | ||
786 | int | |
787 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
788 | const char *name) | |
789 | { | |
790 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
791 | ||
792 | if (reg == NULL) | |
793 | return 0; | |
794 | ||
795 | return 1; | |
796 | } | |
797 | ||
7cc46491 DJ |
798 | /* Search FEATURE for a register whose name is in NAMES and assign |
799 | REGNO to it. */ | |
123dc839 DJ |
800 | |
801 | int | |
802 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
803 | struct tdesc_arch_data *data, | |
804 | int regno, const char *const names[]) | |
805 | { | |
806 | int i; | |
807 | ||
808 | for (i = 0; names[i] != NULL; i++) | |
809 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
810 | return 1; | |
811 | ||
812 | return 0; | |
813 | } | |
814 | ||
7cc46491 DJ |
815 | /* Search FEATURE for a register named NAME, and return its size in |
816 | bits. The register must exist. */ | |
817 | ||
818 | int | |
819 | tdesc_register_size (const struct tdesc_feature *feature, | |
820 | const char *name) | |
821 | { | |
822 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
823 | ||
824 | gdb_assert (reg != NULL); | |
825 | return reg->bitsize; | |
826 | } | |
827 | ||
123dc839 DJ |
828 | /* Look up a register by its GDB internal register number. */ |
829 | ||
ad068eab UW |
830 | static struct tdesc_arch_reg * |
831 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 832 | { |
123dc839 DJ |
833 | struct tdesc_arch_data *data; |
834 | ||
19ba03f4 | 835 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
f0cddbef SM |
836 | if (regno < data->arch_regs.size ()) |
837 | return &data->arch_regs[regno]; | |
123dc839 DJ |
838 | else |
839 | return NULL; | |
840 | } | |
841 | ||
ad068eab UW |
842 | static struct tdesc_reg * |
843 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
844 | { | |
845 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 846 | |
ad068eab UW |
847 | return reg? reg->reg : NULL; |
848 | } | |
849 | ||
f8b73d13 DJ |
850 | /* Return the name of register REGNO, from the target description or |
851 | from an architecture-provided pseudo_register_name method. */ | |
852 | ||
853 | const char * | |
d93859e2 | 854 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 855 | { |
d93859e2 UW |
856 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
857 | int num_regs = gdbarch_num_regs (gdbarch); | |
858 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
859 | |
860 | if (reg != NULL) | |
a8142ee1 | 861 | return reg->name.c_str (); |
123dc839 DJ |
862 | |
863 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
864 | { | |
19ba03f4 SM |
865 | struct tdesc_arch_data *data |
866 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 867 | |
123dc839 | 868 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 869 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
870 | } |
871 | ||
872 | return ""; | |
873 | } | |
874 | ||
58d6951d | 875 | struct type * |
123dc839 DJ |
876 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
877 | { | |
ad068eab UW |
878 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
879 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
880 | int num_regs = gdbarch_num_regs (gdbarch); |
881 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
882 | ||
883 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
884 | { | |
19ba03f4 SM |
885 | struct tdesc_arch_data *data |
886 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 887 | |
123dc839 DJ |
888 | gdb_assert (data->pseudo_register_type != NULL); |
889 | return data->pseudo_register_type (gdbarch, regno); | |
890 | } | |
891 | ||
892 | if (reg == NULL) | |
893 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 894 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 895 | |
ad068eab | 896 | if (arch_reg->type == NULL) |
123dc839 | 897 | { |
ad068eab UW |
898 | /* First check for a predefined or target defined type. */ |
899 | if (reg->tdesc_type) | |
b8df6ca7 | 900 | arch_reg->type = make_gdb_type (gdbarch, reg->tdesc_type); |
ad068eab UW |
901 | |
902 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 903 | else if (reg->type == "float") |
ad068eab UW |
904 | { |
905 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
906 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
907 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
908 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
909 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
910 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
911 | else | |
912 | { | |
913 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 914 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
915 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
916 | } | |
917 | } | |
a8142ee1 | 918 | else if (reg->type == "int") |
ad068eab UW |
919 | { |
920 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
921 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
922 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
923 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
924 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
925 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
926 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
927 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
928 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
929 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
930 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 931 | /* A bit desperate by this point... */ |
ad068eab UW |
932 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
933 | else | |
934 | { | |
935 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 936 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
937 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
938 | } | |
939 | } | |
940 | ||
941 | if (arch_reg->type == NULL) | |
942 | internal_error (__FILE__, __LINE__, | |
943 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 944 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 945 | } |
123dc839 | 946 | |
ad068eab | 947 | return arch_reg->type; |
123dc839 DJ |
948 | } |
949 | ||
950 | static int | |
951 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
952 | { | |
953 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
954 | ||
955 | if (reg != NULL) | |
956 | return reg->target_regnum; | |
957 | else | |
958 | return -1; | |
959 | } | |
960 | ||
961 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
cef0f868 SH |
962 | target description may be classified as general, float, vector or other |
963 | register groups registered with reggroup_add(). Unlike a gdbarch | |
964 | register_reggroup_p method, this function will return -1 if it does not | |
965 | know; the caller should handle registers with no specified group. | |
966 | ||
967 | The names of containing features are not used. This might be extended | |
968 | to display registers in some more useful groupings. | |
123dc839 DJ |
969 | |
970 | The save-restore flag is also implemented here. */ | |
971 | ||
f8b73d13 DJ |
972 | int |
973 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
974 | struct reggroup *reggroup) | |
123dc839 | 975 | { |
123dc839 DJ |
976 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
977 | ||
cef0f868 SH |
978 | if (reg != NULL && !reg->group.empty () |
979 | && (reg->group == reggroup_name (reggroup))) | |
980 | return 1; | |
123dc839 DJ |
981 | |
982 | if (reg != NULL | |
983 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
984 | return reg->save_restore; | |
985 | ||
f8b73d13 DJ |
986 | return -1; |
987 | } | |
988 | ||
989 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
990 | group specified go to the default reggroup function and are handled | |
991 | by type. */ | |
992 | ||
993 | static int | |
994 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
995 | struct reggroup *reggroup) | |
996 | { | |
997 | int num_regs = gdbarch_num_regs (gdbarch); | |
998 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
999 | int ret; | |
1000 | ||
1001 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1002 | { | |
19ba03f4 SM |
1003 | struct tdesc_arch_data *data |
1004 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1005 | |
58d6951d DJ |
1006 | if (data->pseudo_register_reggroup_p != NULL) |
1007 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1008 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1009 | } |
1010 | ||
1011 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1012 | if (ret != -1) | |
1013 | return ret; | |
1014 | ||
123dc839 DJ |
1015 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1016 | } | |
1017 | ||
1018 | /* Record architecture-specific functions to call for pseudo-register | |
1019 | support. */ | |
1020 | ||
1021 | void | |
1022 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1023 | gdbarch_register_name_ftype *pseudo_name) | |
1024 | { | |
19ba03f4 SM |
1025 | struct tdesc_arch_data *data |
1026 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1027 | |
1028 | data->pseudo_register_name = pseudo_name; | |
1029 | } | |
1030 | ||
1031 | void | |
1032 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1033 | gdbarch_register_type_ftype *pseudo_type) | |
1034 | { | |
19ba03f4 SM |
1035 | struct tdesc_arch_data *data |
1036 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1037 | |
1038 | data->pseudo_register_type = pseudo_type; | |
1039 | } | |
1040 | ||
1041 | void | |
1042 | set_tdesc_pseudo_register_reggroup_p | |
1043 | (struct gdbarch *gdbarch, | |
1044 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1045 | { | |
19ba03f4 SM |
1046 | struct tdesc_arch_data *data |
1047 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1048 | |
1049 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1050 | } | |
1051 | ||
1052 | /* Update GDBARCH to use the target description for registers. */ | |
1053 | ||
1054 | void | |
1055 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1056 | const struct target_desc *target_desc, |
123dc839 DJ |
1057 | struct tdesc_arch_data *early_data) |
1058 | { | |
1059 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
1060 | struct tdesc_arch_data *data; |
1061 | htab_t reg_hash; | |
1062 | ||
123dc839 DJ |
1063 | /* We can't use the description for registers if it doesn't describe |
1064 | any. This function should only be called after validating | |
1065 | registers, so the caller should know that registers are | |
1066 | included. */ | |
1067 | gdb_assert (tdesc_has_registers (target_desc)); | |
1068 | ||
19ba03f4 | 1069 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1070 | data->arch_regs = early_data->arch_regs; |
f0cddbef | 1071 | delete early_data; |
123dc839 DJ |
1072 | |
1073 | /* Build up a set of all registers, so that we can assign register | |
1074 | numbers where needed. The hash table expands as necessary, so | |
1075 | the initial size is arbitrary. */ | |
1076 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1077 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1078 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1079 | { |
c9c895b9 | 1080 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1081 | |
c9c895b9 | 1082 | *slot = reg.get (); |
cef0f868 SH |
1083 | /* Add reggroup if its new. */ |
1084 | if (!reg->group.empty ()) | |
1085 | if (reggroup_find (gdbarch, reg->group.c_str ()) == NULL) | |
1086 | reggroup_add (gdbarch, reggroup_gdbarch_new (gdbarch, | |
1087 | reg->group.c_str (), | |
1088 | USER_REGGROUP)); | |
123dc839 DJ |
1089 | } |
1090 | ||
1091 | /* Remove any registers which were assigned numbers by the | |
1092 | architecture. */ | |
f0cddbef SM |
1093 | for (const tdesc_arch_reg &arch_reg : data->arch_regs) |
1094 | if (arch_reg.reg != NULL) | |
1095 | htab_remove_elt (reg_hash, arch_reg.reg); | |
123dc839 DJ |
1096 | |
1097 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1098 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1099 | Iterate over the features, not the hash table, so that the order |
1100 | matches that in the target description. */ | |
1101 | ||
f0cddbef SM |
1102 | gdb_assert (data->arch_regs.size () <= num_regs); |
1103 | while (data->arch_regs.size () < num_regs) | |
1104 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1105 | ||
3eea796c | 1106 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1107 | for (const tdesc_reg_up ® : feature->registers) |
1108 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1109 | { |
f0cddbef | 1110 | data->arch_regs.emplace_back (reg.get (), nullptr); |
123dc839 DJ |
1111 | num_regs++; |
1112 | } | |
1113 | ||
1114 | htab_delete (reg_hash); | |
1115 | ||
1116 | /* Update the architecture. */ | |
1117 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1118 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1119 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1120 | set_gdbarch_remote_register_number (gdbarch, | |
1121 | tdesc_remote_register_number); | |
1122 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1123 | } | |
123dc839 | 1124 | |
f46cd62a | 1125 | /* See common/tdesc.h. */ |
f49ff000 | 1126 | |
123dc839 | 1127 | struct tdesc_feature * |
3b74854b | 1128 | tdesc_create_feature (struct target_desc *tdesc, const char *name) |
123dc839 | 1129 | { |
72ddacb7 | 1130 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1131 | |
3eea796c SM |
1132 | tdesc->features.emplace_back (new_feature); |
1133 | ||
123dc839 DJ |
1134 | return new_feature; |
1135 | } | |
1136 | ||
424163ea DJ |
1137 | struct target_desc * |
1138 | allocate_target_description (void) | |
1139 | { | |
b468ff4c | 1140 | return new target_desc (); |
424163ea | 1141 | } |
29709017 | 1142 | |
23181151 DJ |
1143 | static void |
1144 | free_target_description (void *arg) | |
1145 | { | |
19ba03f4 | 1146 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1147 | |
b468ff4c | 1148 | delete target_desc; |
23181151 DJ |
1149 | } |
1150 | ||
1151 | struct cleanup * | |
1152 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1153 | { | |
1154 | return make_cleanup (free_target_description, target_desc); | |
1155 | } | |
1156 | ||
e35359c5 UW |
1157 | void |
1158 | tdesc_add_compatible (struct target_desc *target_desc, | |
1159 | const struct bfd_arch_info *compatible) | |
1160 | { | |
e35359c5 UW |
1161 | /* If this instance of GDB is compiled without BFD support for the |
1162 | compatible architecture, simply ignore it -- we would not be able | |
1163 | to handle it anyway. */ | |
1164 | if (compatible == NULL) | |
1165 | return; | |
1166 | ||
40e2a983 | 1167 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1168 | if (compat == compatible) |
1169 | internal_error (__FILE__, __LINE__, | |
1170 | _("Attempted to add duplicate " | |
1171 | "compatible architecture \"%s\""), | |
1172 | compatible->printable_name); | |
1173 | ||
40e2a983 | 1174 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1175 | } |
1176 | ||
29709017 DJ |
1177 | void |
1178 | set_tdesc_property (struct target_desc *target_desc, | |
1179 | const char *key, const char *value) | |
1180 | { | |
29709017 DJ |
1181 | gdb_assert (key != NULL && value != NULL); |
1182 | ||
129c10bc SM |
1183 | if (tdesc_property (target_desc, key) != NULL) |
1184 | internal_error (__FILE__, __LINE__, | |
1185 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1186 | |
129c10bc | 1187 | target_desc->properties.emplace_back (key, value); |
29709017 | 1188 | } |
23181151 | 1189 | |
f46cd62a | 1190 | /* See common/tdesc.h. */ |
5f035c07 YQ |
1191 | |
1192 | void | |
1193 | set_tdesc_architecture (struct target_desc *target_desc, | |
1194 | const char *name) | |
1195 | { | |
1196 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1197 | } | |
1198 | ||
23181151 DJ |
1199 | void |
1200 | set_tdesc_architecture (struct target_desc *target_desc, | |
1201 | const struct bfd_arch_info *arch) | |
1202 | { | |
1203 | target_desc->arch = arch; | |
1204 | } | |
08d16641 | 1205 | |
f46cd62a | 1206 | /* See common/tdesc.h. */ |
5f035c07 YQ |
1207 | |
1208 | void | |
1209 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1210 | { | |
1211 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1212 | } | |
1213 | ||
08d16641 PA |
1214 | void |
1215 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1216 | { | |
1217 | target_desc->osabi = osabi; | |
1218 | } | |
23181151 DJ |
1219 | \f |
1220 | ||
1221 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1222 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1223 | ||
1224 | /* Helper functions for the CLI commands. */ | |
1225 | ||
1226 | static void | |
981a3fb3 | 1227 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1228 | { |
635c7e8a | 1229 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1230 | } |
1231 | ||
1232 | static void | |
981a3fb3 | 1233 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1234 | { |
1235 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1236 | } | |
1237 | ||
1238 | static void | |
981a3fb3 | 1239 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1240 | { |
635c7e8a | 1241 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1242 | } |
1243 | ||
1244 | static void | |
eb4c3f4a | 1245 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1246 | struct cmd_list_element *c) |
1247 | { | |
6ecd4729 PA |
1248 | xfree (target_description_filename); |
1249 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1250 | ||
23181151 DJ |
1251 | target_clear_description (); |
1252 | target_find_description (); | |
1253 | } | |
1254 | ||
1255 | static void | |
1256 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1257 | struct cmd_list_element *c, | |
1258 | const char *value) | |
1259 | { | |
6ecd4729 PA |
1260 | value = target_description_filename; |
1261 | ||
23181151 | 1262 | if (value != NULL && *value != '\0') |
3e43a32a | 1263 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1264 | value); |
1265 | else | |
3e43a32a MS |
1266 | printf_filtered (_("The target description will be " |
1267 | "read from the target.\n")); | |
23181151 DJ |
1268 | } |
1269 | ||
1270 | static void | |
e100df1a | 1271 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1272 | { |
1273 | xfree (target_description_filename); | |
1274 | target_description_filename = NULL; | |
1275 | target_clear_description (); | |
1276 | target_find_description (); | |
1277 | } | |
1278 | ||
6eb1e6a8 YQ |
1279 | /* Print target description in C. */ |
1280 | ||
1281 | class print_c_tdesc : public tdesc_element_visitor | |
1282 | { | |
1283 | public: | |
1284 | print_c_tdesc (std::string &filename_after_features) | |
1285 | : m_filename_after_features (filename_after_features) | |
1286 | { | |
1287 | const char *inp; | |
1288 | char *outp; | |
1289 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1290 | ||
1291 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1292 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1293 | if (*inp == '.') | |
1294 | break; | |
1295 | else if (*inp == '-') | |
1296 | *outp++ = '_'; | |
1297 | else | |
1298 | *outp++ = *inp; | |
1299 | *outp = '\0'; | |
1300 | ||
1301 | /* Standard boilerplate. */ | |
1302 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1303 | "-*- buffer-read-only: t -*- vi" | |
1304 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1305 | } |
1306 | ||
1307 | ~print_c_tdesc () | |
1308 | { | |
1309 | xfree (m_function); | |
1310 | } | |
1311 | ||
1312 | void visit_pre (const target_desc *e) override | |
1313 | { | |
25aa13e5 YQ |
1314 | printf_unfiltered (" Original: %s */\n\n", |
1315 | lbasename (m_filename_after_features.c_str ())); | |
1316 | ||
6eb1e6a8 YQ |
1317 | printf_unfiltered ("#include \"defs.h\"\n"); |
1318 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1319 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1320 | printf_unfiltered ("\n"); | |
1321 | ||
1322 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1323 | printf_unfiltered ("static void\n"); | |
1324 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1325 | printf_unfiltered ("{\n"); | |
1326 | printf_unfiltered | |
1327 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1328 | ||
1329 | if (tdesc_architecture (e) != NULL) | |
1330 | { | |
1331 | printf_unfiltered | |
1332 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1333 | tdesc_architecture (e)->printable_name); | |
1334 | printf_unfiltered ("\n"); | |
1335 | } | |
1336 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1337 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1338 | { | |
1339 | printf_unfiltered | |
1340 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1341 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1342 | printf_unfiltered ("\n"); | |
1343 | } | |
1344 | ||
23a8d186 | 1345 | for (const bfd_arch_info_type *compatible : e->compatible) |
40e2a983 SM |
1346 | printf_unfiltered |
1347 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1348 | compatible->printable_name); | |
6eb1e6a8 | 1349 | |
40e2a983 | 1350 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1351 | printf_unfiltered ("\n"); |
1352 | ||
129c10bc SM |
1353 | for (const property &prop : e->properties) |
1354 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1355 | prop.key.c_str (), prop.value.c_str ()); | |
1356 | ||
6eb1e6a8 YQ |
1357 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1358 | } | |
1359 | ||
25aa13e5 | 1360 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1361 | { |
1362 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1363 | e->name.c_str ()); |
6eb1e6a8 YQ |
1364 | } |
1365 | ||
25aa13e5 YQ |
1366 | void visit_post (const tdesc_feature *e) override |
1367 | {} | |
1368 | ||
6eb1e6a8 YQ |
1369 | void visit_post (const target_desc *e) override |
1370 | { | |
1371 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1372 | printf_unfiltered ("}\n"); | |
1373 | } | |
1374 | ||
d4a0e8b5 SM |
1375 | void visit (const tdesc_type_builtin *type) override |
1376 | { | |
1377 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); | |
1378 | } | |
1379 | ||
1380 | void visit (const tdesc_type_vector *type) override | |
6eb1e6a8 | 1381 | { |
d4a0e8b5 | 1382 | if (!m_printed_element_type) |
6eb1e6a8 | 1383 | { |
d4a0e8b5 SM |
1384 | printf_unfiltered (" tdesc_type *element_type;\n"); |
1385 | m_printed_element_type = true; | |
6eb1e6a8 YQ |
1386 | } |
1387 | ||
d4a0e8b5 SM |
1388 | printf_unfiltered |
1389 | (" element_type = tdesc_named_type (feature, \"%s\");\n", | |
1390 | type->element_type->name.c_str ()); | |
1391 | printf_unfiltered | |
1392 | (" tdesc_create_vector (feature, \"%s\", element_type, %d);\n", | |
1393 | type->name.c_str (), type->count); | |
1394 | ||
1395 | printf_unfiltered ("\n"); | |
1396 | } | |
1397 | ||
1398 | void visit (const tdesc_type_with_fields *type) override | |
1399 | { | |
1400 | if (!m_printed_type_with_fields) | |
6eb1e6a8 | 1401 | { |
d4a0e8b5 SM |
1402 | printf_unfiltered (" tdesc_type_with_fields *type_with_fields;\n"); |
1403 | m_printed_type_with_fields = true; | |
1404 | } | |
1405 | ||
6eb1e6a8 YQ |
1406 | switch (type->kind) |
1407 | { | |
6eb1e6a8 YQ |
1408 | case TDESC_TYPE_STRUCT: |
1409 | case TDESC_TYPE_FLAGS: | |
1410 | if (type->kind == TDESC_TYPE_STRUCT) | |
1411 | { | |
1412 | printf_unfiltered | |
d4a0e8b5 | 1413 | (" type_with_fields = tdesc_create_struct (feature, \"%s\");\n", |
082b9140 | 1414 | type->name.c_str ()); |
d4a0e8b5 | 1415 | if (type->size != 0) |
6eb1e6a8 | 1416 | printf_unfiltered |
d4a0e8b5 | 1417 | (" tdesc_set_struct_size (type_with_fields, %d);\n", type->size); |
6eb1e6a8 YQ |
1418 | } |
1419 | else | |
1420 | { | |
1421 | printf_unfiltered | |
d4a0e8b5 SM |
1422 | (" type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", |
1423 | type->name.c_str (), type->size); | |
6eb1e6a8 | 1424 | } |
d4a0e8b5 | 1425 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 YQ |
1426 | { |
1427 | const char *type_name; | |
1428 | ||
d05200d1 SM |
1429 | gdb_assert (f.type != NULL); |
1430 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1431 | |
1432 | /* To minimize changes to generated files, don't emit type | |
1433 | info for fields that have defaulted types. */ | |
d05200d1 | 1434 | if (f.start != -1) |
6eb1e6a8 | 1435 | { |
d05200d1 SM |
1436 | gdb_assert (f.end != -1); |
1437 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1438 | { |
d05200d1 | 1439 | gdb_assert (f.start == f.end); |
6eb1e6a8 | 1440 | printf_unfiltered |
d4a0e8b5 | 1441 | (" tdesc_add_flag (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1442 | f.start, f.name.c_str ()); |
6eb1e6a8 | 1443 | } |
d4a0e8b5 SM |
1444 | else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) |
1445 | || (type->size == 8 | |
d05200d1 | 1446 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1447 | { |
1448 | printf_unfiltered | |
d4a0e8b5 | 1449 | (" tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", |
d05200d1 | 1450 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1451 | } |
1452 | else | |
1453 | { | |
a8d2e585 SM |
1454 | printf_field_type_assignment |
1455 | ("tdesc_named_type (feature, \"%s\");\n", | |
6eb1e6a8 YQ |
1456 | type_name); |
1457 | printf_unfiltered | |
d4a0e8b5 | 1458 | (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," |
6eb1e6a8 | 1459 | " %d, %d, field_type);\n", |
d05200d1 | 1460 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1461 | } |
1462 | } | |
1463 | else /* Not a bitfield. */ | |
1464 | { | |
d05200d1 | 1465 | gdb_assert (f.end == -1); |
6eb1e6a8 | 1466 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
a8d2e585 SM |
1467 | printf_field_type_assignment |
1468 | ("tdesc_named_type (feature, \"%s\");\n", type_name); | |
6eb1e6a8 | 1469 | printf_unfiltered |
d4a0e8b5 | 1470 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1471 | f.name.c_str ()); |
6eb1e6a8 YQ |
1472 | } |
1473 | } | |
1474 | break; | |
1475 | case TDESC_TYPE_UNION: | |
1476 | printf_unfiltered | |
d4a0e8b5 | 1477 | (" type_with_fields = tdesc_create_union (feature, \"%s\");\n", |
082b9140 | 1478 | type->name.c_str ()); |
d4a0e8b5 | 1479 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 | 1480 | { |
a8d2e585 SM |
1481 | printf_field_type_assignment |
1482 | ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); | |
6eb1e6a8 | 1483 | printf_unfiltered |
d4a0e8b5 | 1484 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1485 | f.name.c_str ()); |
6eb1e6a8 YQ |
1486 | } |
1487 | break; | |
1488 | case TDESC_TYPE_ENUM: | |
1489 | printf_unfiltered | |
d4a0e8b5 SM |
1490 | (" type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", |
1491 | type->name.c_str (), type->size); | |
1492 | for (const tdesc_type_field &f : type->fields) | |
6eb1e6a8 | 1493 | printf_unfiltered |
d4a0e8b5 | 1494 | (" tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1495 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1496 | break; |
1497 | default: | |
082b9140 | 1498 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 | 1499 | } |
d4a0e8b5 | 1500 | |
6eb1e6a8 YQ |
1501 | printf_unfiltered ("\n"); |
1502 | } | |
1503 | ||
1504 | void visit (const tdesc_reg *reg) override | |
1505 | { | |
1506 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1507 | reg->name.c_str (), reg->target_regnum, |
1508 | reg->save_restore); | |
1509 | if (!reg->group.empty ()) | |
1510 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1511 | else |
1512 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1513 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1514 | } |
1515 | ||
25aa13e5 YQ |
1516 | protected: |
1517 | std::string m_filename_after_features; | |
1518 | ||
6eb1e6a8 | 1519 | private: |
a8d2e585 SM |
1520 | |
1521 | /* Print an assignment to the field_type variable. Print the declaration | |
1522 | of field_type if that has not been done yet. */ | |
6e8c24fe | 1523 | ATTRIBUTE_PRINTF (2, 3) |
a8d2e585 SM |
1524 | void printf_field_type_assignment (const char *fmt, ...) |
1525 | { | |
1526 | if (!m_printed_field_type) | |
1527 | { | |
1528 | printf_unfiltered (" tdesc_type *field_type;\n"); | |
1529 | m_printed_field_type = true; | |
1530 | } | |
1531 | ||
1532 | printf_unfiltered (" field_type = "); | |
1533 | ||
1534 | va_list args; | |
1535 | va_start (args, fmt); | |
1536 | vprintf_unfiltered (fmt, args); | |
1537 | va_end (args); | |
1538 | } | |
1539 | ||
6eb1e6a8 | 1540 | char *m_function; |
d4a0e8b5 SM |
1541 | |
1542 | /* Did we print "struct tdesc_type *element_type;" yet? */ | |
1543 | bool m_printed_element_type = false; | |
1544 | ||
1545 | /* Did we print "struct tdesc_type_with_fields *element_type;" yet? */ | |
1546 | bool m_printed_type_with_fields = false; | |
1547 | ||
1548 | /* Did we print "struct tdesc_type *field_type;" yet? */ | |
6eb1e6a8 | 1549 | bool m_printed_field_type = false; |
6eb1e6a8 YQ |
1550 | }; |
1551 | ||
25aa13e5 YQ |
1552 | /* Print target description feature in C. */ |
1553 | ||
1554 | class print_c_feature : public print_c_tdesc | |
1555 | { | |
1556 | public: | |
1557 | print_c_feature (std::string &file) | |
1558 | : print_c_tdesc (file) | |
1559 | { | |
1560 | /* Trim ".tmp". */ | |
1561 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
1562 | ||
1563 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
1564 | } | |
1565 | ||
1566 | void visit_pre (const target_desc *e) override | |
1567 | { | |
1568 | printf_unfiltered (" Original: %s */\n\n", | |
1569 | lbasename (m_filename_after_features.c_str ())); | |
1570 | ||
f46cd62a | 1571 | printf_unfiltered ("#include \"common/tdesc.h\"\n"); |
25aa13e5 YQ |
1572 | printf_unfiltered ("\n"); |
1573 | } | |
1574 | ||
1575 | void visit_post (const target_desc *e) override | |
1576 | {} | |
1577 | ||
1578 | void visit_pre (const tdesc_feature *e) override | |
1579 | { | |
1580 | std::string name (m_filename_after_features); | |
1581 | ||
1582 | auto pos = name.find_first_of ('.'); | |
1583 | ||
1584 | name = name.substr (0, pos); | |
1585 | std::replace (name.begin (), name.end (), '/', '_'); | |
1586 | std::replace (name.begin (), name.end (), '-', '_'); | |
1587 | ||
1588 | printf_unfiltered ("static int\n"); | |
1589 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
1590 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
1591 | ||
1592 | printf_unfiltered ("{\n"); | |
1593 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
1594 | |
1595 | printf_unfiltered | |
3b74854b AH |
1596 | ("\n feature = tdesc_create_feature (result, \"%s\");\n", |
1597 | e->name.c_str ()); | |
25aa13e5 YQ |
1598 | } |
1599 | ||
1600 | void visit_post (const tdesc_feature *e) override | |
1601 | { | |
1602 | printf_unfiltered (" return regnum;\n"); | |
1603 | printf_unfiltered ("}\n"); | |
1604 | } | |
1605 | ||
1606 | void visit (const tdesc_reg *reg) override | |
1607 | { | |
ea03d0d3 YQ |
1608 | /* Most "reg" in XML target descriptions don't have "regnum" |
1609 | attribute, so the register number is allocated sequentially. | |
1610 | In case that reg has "regnum" attribute, register number | |
1611 | should be set by that explicitly. */ | |
1612 | ||
1613 | if (reg->target_regnum < m_next_regnum) | |
1614 | { | |
1615 | /* The integrity check, it can catch some errors on register | |
1616 | number collision, like this, | |
1617 | ||
1618 | <reg name="x0" bitsize="32"/> | |
1619 | <reg name="x1" bitsize="32"/> | |
1620 | <reg name="x2" bitsize="32"/> | |
1621 | <reg name="x3" bitsize="32"/> | |
1622 | <reg name="ps" bitsize="32" regnum="3"/> | |
1623 | ||
1624 | but it also has false negatives. The target description | |
1625 | below is correct, | |
1626 | ||
1627 | <reg name="x1" bitsize="32" regnum="1"/> | |
1628 | <reg name="x3" bitsize="32" regnum="3"/> | |
1629 | <reg name="x2" bitsize="32" regnum="2"/> | |
1630 | <reg name="x4" bitsize="32" regnum="4"/> | |
1631 | ||
1632 | but it is not a good practice, so still error on this, | |
1633 | and also print the message so that it can be saved in the | |
1634 | generated c file. */ | |
1635 | ||
1636 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
1637 | reg->target_regnum); | |
1638 | printf_unfiltered ("is not the largest number (%d).\n", | |
1639 | m_next_regnum); | |
1640 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
1641 | reg->target_regnum, m_next_regnum); | |
1642 | } | |
1643 | ||
1644 | if (reg->target_regnum > m_next_regnum) | |
1645 | { | |
1646 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
1647 | m_next_regnum = reg->target_regnum; | |
1648 | } | |
1649 | ||
25aa13e5 | 1650 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
1651 | reg->name.c_str (), reg->save_restore); |
1652 | if (!reg->group.empty ()) | |
1653 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
1654 | else |
1655 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1656 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
1657 | |
1658 | m_next_regnum++; | |
25aa13e5 YQ |
1659 | } |
1660 | ||
ea03d0d3 YQ |
1661 | private: |
1662 | /* The register number to use for the next register we see. */ | |
1663 | int m_next_regnum = 0; | |
25aa13e5 YQ |
1664 | }; |
1665 | ||
e98577a9 AH |
1666 | /* See common/tdesc.h. */ |
1667 | ||
1668 | const char * | |
1669 | tdesc_get_features_xml (const target_desc *tdesc) | |
1670 | { | |
1671 | if (tdesc->xmltarget == nullptr) | |
1672 | { | |
1673 | std::string buffer ("@"); | |
1674 | print_xml_feature v (&buffer); | |
1675 | tdesc->accept (v); | |
1676 | tdesc->xmltarget = xstrdup (buffer.c_str ()); | |
1677 | } | |
1678 | return tdesc->xmltarget; | |
1679 | } | |
1680 | ||
81adfced | 1681 | static void |
e100df1a | 1682 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
1683 | { |
1684 | const struct target_desc *tdesc; | |
6eb1e6a8 | 1685 | const char *filename; |
81adfced | 1686 | |
8e2141c6 YQ |
1687 | if (args == NULL) |
1688 | { | |
1689 | /* Use the global target-supplied description, not the current | |
1690 | architecture's. This lets a GDB for one architecture generate C | |
1691 | for another architecture's description, even though the gdbarch | |
1692 | initialization code will reject the new description. */ | |
1693 | tdesc = current_target_desc; | |
1694 | filename = target_description_filename; | |
1695 | } | |
1696 | else | |
1697 | { | |
1698 | /* Use the target description from the XML file. */ | |
1699 | filename = args; | |
1700 | tdesc = file_read_description_xml (filename); | |
1701 | } | |
1702 | ||
81adfced DJ |
1703 | if (tdesc == NULL) |
1704 | error (_("There is no target description to print.")); | |
1705 | ||
8e2141c6 | 1706 | if (filename == NULL) |
81adfced DJ |
1707 | error (_("The current target description did not come from an XML file.")); |
1708 | ||
6eb1e6a8 YQ |
1709 | std::string filename_after_features (filename); |
1710 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 1711 | |
6eb1e6a8 YQ |
1712 | if (loc != std::string::npos) |
1713 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 1714 | |
25aa13e5 YQ |
1715 | /* Print c files for target features instead of target descriptions, |
1716 | because c files got from target features are more flexible than the | |
1717 | counterparts. */ | |
6c73f67f YQ |
1718 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
1719 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 1720 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
1721 | || startswith (filename_after_features.c_str (), "tic6x-") |
1722 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
1723 | { |
1724 | print_c_feature v (filename_after_features); | |
81adfced | 1725 | |
25aa13e5 YQ |
1726 | tdesc->accept (v); |
1727 | } | |
1728 | else | |
1729 | { | |
1730 | print_c_tdesc v (filename_after_features); | |
1731 | ||
1732 | tdesc->accept (v); | |
1733 | } | |
81adfced DJ |
1734 | } |
1735 | ||
27d41eac YQ |
1736 | namespace selftests { |
1737 | ||
1738 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
1739 | ||
1740 | #if GDB_SELF_TEST | |
1741 | ||
1742 | /* See target-descritpions.h. */ | |
1743 | ||
1744 | void | |
1745 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
1746 | { | |
1747 | xml_tdesc.emplace_back (xml_file, tdesc); | |
1748 | } | |
1749 | #endif | |
1750 | ||
1751 | } | |
1752 | ||
e98577a9 AH |
1753 | /* Test the convesion process of a target description to/from xml: Take a target |
1754 | description TDESC, convert to xml, back to a description, and confirm the new | |
1755 | tdesc is identical to the original. */ | |
1756 | static bool | |
1757 | maintenance_check_tdesc_xml_convert (const target_desc *tdesc, const char *name) | |
1758 | { | |
1759 | const char *xml = tdesc_get_features_xml (tdesc); | |
1760 | ||
1761 | if (xml == nullptr || *xml != '@') | |
1762 | { | |
1763 | printf_filtered (_("Could not convert description for %s to xml.\n"), | |
1764 | name); | |
1765 | return false; | |
1766 | } | |
1767 | ||
1768 | const target_desc *tdesc_trans = string_read_description_xml (xml + 1); | |
1769 | ||
1770 | if (tdesc_trans == nullptr) | |
1771 | { | |
1772 | printf_filtered (_("Could not convert description for %s from xml.\n"), | |
1773 | name); | |
1774 | return false; | |
1775 | } | |
1776 | else if (*tdesc != *tdesc_trans) | |
1777 | { | |
1778 | printf_filtered (_("Converted description for %s does not match.\n"), | |
1779 | name); | |
1780 | return false; | |
1781 | } | |
1782 | return true; | |
1783 | } | |
1784 | ||
1785 | ||
27d41eac YQ |
1786 | /* Check that the target descriptions created dynamically by |
1787 | architecture-specific code equal the descriptions created from XML files | |
1788 | found in the specified directory DIR. */ | |
1789 | ||
1790 | static void | |
e100df1a | 1791 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
1792 | { |
1793 | if (dir == NULL) | |
1794 | error (_("Missing dir name")); | |
1795 | ||
1796 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
1797 | std::string feature_dir (dir1.get ()); | |
1798 | unsigned int failed = 0; | |
1799 | ||
1800 | for (auto const &e : selftests::xml_tdesc) | |
1801 | { | |
1802 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
1803 | const target_desc *tdesc | |
1804 | = file_read_description_xml (tdesc_xml.data ()); | |
1805 | ||
1806 | if (tdesc == NULL || *tdesc != *e.second) | |
e98577a9 AH |
1807 | { |
1808 | printf_filtered ( _("Descriptions for %s do not match.\n"), e.first); | |
1809 | failed++; | |
1810 | } | |
1811 | else if (!maintenance_check_tdesc_xml_convert (tdesc, e.first) | |
1812 | || !maintenance_check_tdesc_xml_convert (e.second, e.first)) | |
27d41eac YQ |
1813 | failed++; |
1814 | } | |
1815 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
1816 | (long) selftests::xml_tdesc.size (), failed); | |
1817 | } | |
1818 | ||
23181151 DJ |
1819 | void |
1820 | _initialize_target_descriptions (void) | |
1821 | { | |
123dc839 DJ |
1822 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1823 | ||
23181151 DJ |
1824 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1825 | Set target description specific variables."), | |
1826 | &tdesc_set_cmdlist, "set tdesc ", | |
1827 | 0 /* allow-unknown */, &setlist); | |
1828 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1829 | Show target description specific variables."), | |
1830 | &tdesc_show_cmdlist, "show tdesc ", | |
1831 | 0 /* allow-unknown */, &showlist); | |
1832 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1833 | Unset target description specific variables."), | |
1834 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1835 | 0 /* allow-unknown */, &unsetlist); | |
1836 | ||
1837 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 1838 | &tdesc_filename_cmd_string, |
23181151 DJ |
1839 | _("\ |
1840 | Set the file to read for an XML target description"), _("\ | |
1841 | Show the file to read for an XML target description"), _("\ | |
1842 | When set, GDB will read the target description from a local\n\ | |
1843 | file instead of querying the remote target."), | |
1844 | set_tdesc_filename_cmd, | |
1845 | show_tdesc_filename_cmd, | |
1846 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1847 | ||
1848 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1849 | Unset the file to read for an XML target description. When unset,\n\ | |
1850 | GDB will read the description from the target."), | |
1851 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1852 | |
1853 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1854 | Print the current target description as a C source file."), | |
1855 | &maintenanceprintlist); | |
27d41eac YQ |
1856 | |
1857 | cmd_list_element *cmd; | |
1858 | ||
1859 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
1860 | maintenance_check_xml_descriptions, _("\ | |
1861 | Check the target descriptions created in GDB equal the descriptions\n\ | |
1862 | created from XML files in the directory.\n\ | |
1863 | The parameter is the directory name."), | |
1864 | &maintenancechecklist); | |
1865 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 1866 | } |