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ea3e7d71 AH |
1 | /* Target description support for GDB. |
2 | ||
42a4f53d | 3 | Copyright (C) 2018-2019 Free Software Foundation, Inc. |
ea3e7d71 AH |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "common-defs.h" | |
21 | #include "common/tdesc.h" | |
22 | ||
23 | tdesc_reg::tdesc_reg (struct tdesc_feature *feature, const std::string &name_, | |
24 | int regnum, int save_restore_, const char *group_, | |
25 | int bitsize_, const char *type_) | |
26 | : name (name_), target_regnum (regnum), | |
27 | save_restore (save_restore_), | |
28 | group (group_ != NULL ? group_ : ""), | |
29 | bitsize (bitsize_), | |
30 | type (type_ != NULL ? type_ : "<unknown>") | |
31 | { | |
32 | /* If the register's type is target-defined, look it up now. We may not | |
33 | have easy access to the containing feature when we want it later. */ | |
34 | tdesc_type = tdesc_named_type (feature, type.c_str ()); | |
35 | } | |
82ec9bc7 | 36 | |
eee8a18d AH |
37 | /* Predefined types. */ |
38 | static tdesc_type_builtin tdesc_predefined_types[] = | |
39 | { | |
40 | { "bool", TDESC_TYPE_BOOL }, | |
41 | { "int8", TDESC_TYPE_INT8 }, | |
42 | { "int16", TDESC_TYPE_INT16 }, | |
43 | { "int32", TDESC_TYPE_INT32 }, | |
44 | { "int64", TDESC_TYPE_INT64 }, | |
45 | { "int128", TDESC_TYPE_INT128 }, | |
46 | { "uint8", TDESC_TYPE_UINT8 }, | |
47 | { "uint16", TDESC_TYPE_UINT16 }, | |
48 | { "uint32", TDESC_TYPE_UINT32 }, | |
49 | { "uint64", TDESC_TYPE_UINT64 }, | |
50 | { "uint128", TDESC_TYPE_UINT128 }, | |
51 | { "code_ptr", TDESC_TYPE_CODE_PTR }, | |
52 | { "data_ptr", TDESC_TYPE_DATA_PTR }, | |
53 | { "ieee_single", TDESC_TYPE_IEEE_SINGLE }, | |
54 | { "ieee_double", TDESC_TYPE_IEEE_DOUBLE }, | |
55 | { "arm_fpa_ext", TDESC_TYPE_ARM_FPA_EXT }, | |
56 | { "i387_ext", TDESC_TYPE_I387_EXT } | |
57 | }; | |
58 | ||
82ec9bc7 AH |
59 | void tdesc_feature::accept (tdesc_element_visitor &v) const |
60 | { | |
61 | v.visit_pre (this); | |
62 | ||
63 | for (const tdesc_type_up &type : types) | |
64 | type->accept (v); | |
65 | ||
66 | for (const tdesc_reg_up ® : registers) | |
67 | reg->accept (v); | |
68 | ||
69 | v.visit_post (this); | |
70 | } | |
71 | ||
72 | bool tdesc_feature::operator== (const tdesc_feature &other) const | |
73 | { | |
74 | if (name != other.name) | |
75 | return false; | |
76 | ||
77 | if (registers.size () != other.registers.size ()) | |
78 | return false; | |
79 | ||
80 | for (int ix = 0; ix < registers.size (); ix++) | |
81 | { | |
82 | const tdesc_reg_up ®1 = registers[ix]; | |
83 | const tdesc_reg_up ®2 = other.registers[ix]; | |
84 | ||
85 | if (reg1 != reg2 && *reg1 != *reg2) | |
86 | return false; | |
87 | } | |
88 | ||
89 | if (types.size () != other.types.size ()) | |
90 | return false; | |
91 | ||
92 | for (int ix = 0; ix < types.size (); ix++) | |
93 | { | |
94 | const tdesc_type_up &type1 = types[ix]; | |
95 | const tdesc_type_up &type2 = other.types[ix]; | |
96 | ||
97 | if (type1 != type2 && *type1 != *type2) | |
98 | return false; | |
99 | } | |
100 | ||
101 | return true; | |
102 | } | |
103 | ||
eee8a18d AH |
104 | /* Lookup a predefined type. */ |
105 | ||
106 | static struct tdesc_type * | |
107 | tdesc_predefined_type (enum tdesc_type_kind kind) | |
108 | { | |
109 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
110 | if (tdesc_predefined_types[ix].kind == kind) | |
111 | return &tdesc_predefined_types[ix]; | |
112 | ||
113 | gdb_assert_not_reached ("bad predefined tdesc type"); | |
114 | } | |
115 | ||
116 | /* See common/tdesc.h. */ | |
117 | ||
118 | struct tdesc_type * | |
119 | tdesc_named_type (const struct tdesc_feature *feature, const char *id) | |
120 | { | |
121 | /* First try target-defined types. */ | |
122 | for (const tdesc_type_up &type : feature->types) | |
123 | if (type->name == id) | |
124 | return type.get (); | |
125 | ||
126 | /* Next try the predefined types. */ | |
127 | for (int ix = 0; ix < ARRAY_SIZE (tdesc_predefined_types); ix++) | |
128 | if (tdesc_predefined_types[ix].name == id) | |
129 | return &tdesc_predefined_types[ix]; | |
130 | ||
131 | return NULL; | |
132 | } | |
133 | ||
82ec9bc7 AH |
134 | /* See common/tdesc.h. */ |
135 | ||
136 | void | |
137 | tdesc_create_reg (struct tdesc_feature *feature, const char *name, | |
138 | int regnum, int save_restore, const char *group, | |
139 | int bitsize, const char *type) | |
140 | { | |
141 | tdesc_reg *reg = new tdesc_reg (feature, name, regnum, save_restore, | |
142 | group, bitsize, type); | |
143 | ||
144 | feature->registers.emplace_back (reg); | |
145 | } | |
eee8a18d AH |
146 | |
147 | /* See common/tdesc.h. */ | |
148 | ||
149 | struct tdesc_type * | |
150 | tdesc_create_vector (struct tdesc_feature *feature, const char *name, | |
151 | struct tdesc_type *field_type, int count) | |
152 | { | |
153 | tdesc_type_vector *type = new tdesc_type_vector (name, field_type, count); | |
154 | feature->types.emplace_back (type); | |
155 | ||
156 | return type; | |
157 | } | |
158 | ||
159 | /* See common/tdesc.h. */ | |
160 | ||
161 | tdesc_type_with_fields * | |
162 | tdesc_create_struct (struct tdesc_feature *feature, const char *name) | |
163 | { | |
164 | tdesc_type_with_fields *type | |
165 | = new tdesc_type_with_fields (name, TDESC_TYPE_STRUCT); | |
166 | feature->types.emplace_back (type); | |
167 | ||
168 | return type; | |
169 | } | |
170 | ||
171 | /* See common/tdesc.h. */ | |
172 | ||
173 | void | |
174 | tdesc_set_struct_size (tdesc_type_with_fields *type, int size) | |
175 | { | |
176 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); | |
177 | gdb_assert (size > 0); | |
178 | type->size = size; | |
179 | } | |
180 | ||
181 | /* See common/tdesc.h. */ | |
182 | ||
183 | tdesc_type_with_fields * | |
184 | tdesc_create_union (struct tdesc_feature *feature, const char *name) | |
185 | { | |
186 | tdesc_type_with_fields *type | |
187 | = new tdesc_type_with_fields (name, TDESC_TYPE_UNION); | |
188 | feature->types.emplace_back (type); | |
189 | ||
190 | return type; | |
191 | } | |
192 | ||
193 | /* See common/tdesc.h. */ | |
194 | ||
195 | tdesc_type_with_fields * | |
196 | tdesc_create_flags (struct tdesc_feature *feature, const char *name, | |
197 | int size) | |
198 | { | |
199 | gdb_assert (size > 0); | |
200 | ||
201 | tdesc_type_with_fields *type | |
202 | = new tdesc_type_with_fields (name, TDESC_TYPE_FLAGS, size); | |
203 | feature->types.emplace_back (type); | |
204 | ||
205 | return type; | |
206 | } | |
207 | ||
208 | /* See common/tdesc.h. */ | |
209 | ||
210 | tdesc_type_with_fields * | |
211 | tdesc_create_enum (struct tdesc_feature *feature, const char *name, | |
212 | int size) | |
213 | { | |
214 | gdb_assert (size > 0); | |
215 | ||
216 | tdesc_type_with_fields *type | |
217 | = new tdesc_type_with_fields (name, TDESC_TYPE_ENUM, size); | |
218 | feature->types.emplace_back (type); | |
219 | ||
220 | return type; | |
221 | } | |
222 | ||
223 | /* See common/tdesc.h. */ | |
224 | ||
225 | void | |
226 | tdesc_add_field (tdesc_type_with_fields *type, const char *field_name, | |
227 | struct tdesc_type *field_type) | |
228 | { | |
229 | gdb_assert (type->kind == TDESC_TYPE_UNION | |
230 | || type->kind == TDESC_TYPE_STRUCT); | |
231 | ||
232 | /* Initialize start and end so we know this is not a bit-field | |
233 | when we print-c-tdesc. */ | |
234 | type->fields.emplace_back (field_name, field_type, -1, -1); | |
235 | } | |
236 | ||
237 | /* See common/tdesc.h. */ | |
238 | ||
239 | void | |
240 | tdesc_add_typed_bitfield (tdesc_type_with_fields *type, const char *field_name, | |
241 | int start, int end, struct tdesc_type *field_type) | |
242 | { | |
243 | gdb_assert (type->kind == TDESC_TYPE_STRUCT | |
244 | || type->kind == TDESC_TYPE_FLAGS); | |
245 | gdb_assert (start >= 0 && end >= start); | |
246 | ||
247 | type->fields.emplace_back (field_name, field_type, start, end); | |
248 | } | |
249 | ||
250 | /* See common/tdesc.h. */ | |
251 | ||
252 | void | |
253 | tdesc_add_bitfield (tdesc_type_with_fields *type, const char *field_name, | |
254 | int start, int end) | |
255 | { | |
256 | struct tdesc_type *field_type; | |
257 | ||
258 | gdb_assert (start >= 0 && end >= start); | |
259 | ||
260 | if (type->size > 4) | |
261 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT64); | |
262 | else | |
263 | field_type = tdesc_predefined_type (TDESC_TYPE_UINT32); | |
264 | ||
265 | tdesc_add_typed_bitfield (type, field_name, start, end, field_type); | |
266 | } | |
267 | ||
268 | /* See common/tdesc.h. */ | |
269 | ||
270 | void | |
271 | tdesc_add_flag (tdesc_type_with_fields *type, int start, | |
272 | const char *flag_name) | |
273 | { | |
274 | gdb_assert (type->kind == TDESC_TYPE_FLAGS | |
275 | || type->kind == TDESC_TYPE_STRUCT); | |
276 | ||
277 | type->fields.emplace_back (flag_name, | |
278 | tdesc_predefined_type (TDESC_TYPE_BOOL), | |
279 | start, start); | |
280 | } | |
281 | ||
282 | /* See common/tdesc.h. */ | |
283 | ||
284 | void | |
285 | tdesc_add_enum_value (tdesc_type_with_fields *type, int value, | |
286 | const char *name) | |
287 | { | |
288 | gdb_assert (type->kind == TDESC_TYPE_ENUM); | |
289 | type->fields.emplace_back (name, | |
290 | tdesc_predefined_type (TDESC_TYPE_INT32), | |
291 | value, -1); | |
292 | } | |
e98577a9 AH |
293 | |
294 | void print_xml_feature::visit_pre (const tdesc_feature *e) | |
295 | { | |
296 | string_appendf (*m_buffer, "<feature name=\"%s\">\n", e->name.c_str ()); | |
297 | } | |
298 | ||
299 | void print_xml_feature::visit_post (const tdesc_feature *e) | |
300 | { | |
301 | string_appendf (*m_buffer, "</feature>\n"); | |
302 | } | |
303 | ||
304 | void print_xml_feature::visit (const tdesc_type_builtin *t) | |
305 | { | |
306 | error (_("xml output is not supported for type \"%s\"."), t->name.c_str ()); | |
307 | } | |
308 | ||
309 | void print_xml_feature::visit (const tdesc_type_vector *t) | |
310 | { | |
311 | string_appendf (*m_buffer, "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>\n", | |
312 | t->name.c_str (), t->element_type->name.c_str (), t->count); | |
313 | } | |
314 | ||
315 | void print_xml_feature::visit (const tdesc_type_with_fields *t) | |
316 | { | |
e98577a9 AH |
317 | const static char *types[] = { "struct", "union", "flags", "enum" }; |
318 | ||
319 | gdb_assert (t->kind >= TDESC_TYPE_STRUCT && t->kind <= TDESC_TYPE_ENUM); | |
320 | ||
321 | string_appendf (*m_buffer, | |
322 | "<%s id=\"%s\"", types[t->kind - TDESC_TYPE_STRUCT], | |
323 | t->name.c_str ()); | |
324 | ||
325 | switch (t->kind) | |
326 | { | |
327 | case TDESC_TYPE_STRUCT: | |
328 | case TDESC_TYPE_FLAGS: | |
329 | if (t->size > 0) | |
330 | string_appendf (*m_buffer, " size=\"%d\"", t->size); | |
331 | string_appendf (*m_buffer, ">\n"); | |
332 | ||
333 | for (const tdesc_type_field &f : t->fields) | |
334 | { | |
335 | string_appendf (*m_buffer, " <field name=\"%s\" ", f.name.c_str ()); | |
336 | if (f.start == -1) | |
337 | string_appendf (*m_buffer, "type=\"%s\"/>\n", | |
338 | f.type->name.c_str ()); | |
339 | else | |
340 | string_appendf (*m_buffer, "start=\"%d\" end=\"%d\"/>\n", f.start, | |
341 | f.end); | |
342 | } | |
343 | break; | |
344 | ||
345 | case TDESC_TYPE_ENUM: | |
346 | string_appendf (*m_buffer, ">\n"); | |
347 | for (const tdesc_type_field &f : t->fields) | |
348 | string_appendf (*m_buffer, " <field name=\"%s\" start=\"%d\"/>\n", | |
349 | f.name.c_str (), f.start); | |
350 | break; | |
351 | ||
352 | case TDESC_TYPE_UNION: | |
353 | string_appendf (*m_buffer, ">\n"); | |
354 | for (const tdesc_type_field &f : t->fields) | |
355 | string_appendf (*m_buffer, " <field name=\"%s\" type=\"%s\"/>\n", | |
356 | f.name.c_str (), f.type->name.c_str ()); | |
357 | break; | |
358 | ||
359 | default: | |
360 | error (_("xml output is not supported for type \"%s\"."), | |
361 | t->name.c_str ()); | |
362 | } | |
363 | ||
364 | string_appendf (*m_buffer, "</%s>\n", types[t->kind - TDESC_TYPE_STRUCT]); | |
365 | } | |
366 | ||
367 | void print_xml_feature::visit (const tdesc_reg *r) | |
368 | { | |
369 | string_appendf (*m_buffer, | |
370 | "<reg name=\"%s\" bitsize=\"%d\" type=\"%s\" regnum=\"%ld\"", | |
371 | r->name.c_str (), r->bitsize, r->type.c_str (), | |
372 | r->target_regnum); | |
373 | ||
374 | if (r->group.length () > 0) | |
375 | string_appendf (*m_buffer, " group=\"%s\"", r->group.c_str ()); | |
376 | ||
377 | if (r->save_restore == 0) | |
378 | string_appendf (*m_buffer, " save-restore=\"no\""); | |
379 | ||
380 | string_appendf (*m_buffer, "/>\n"); | |
381 | } | |
382 | ||
383 | void print_xml_feature::visit_pre (const target_desc *e) | |
384 | { | |
385 | #ifndef IN_PROCESS_AGENT | |
386 | string_appendf (*m_buffer, "<?xml version=\"1.0\"?>\n"); | |
387 | string_appendf (*m_buffer, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"); | |
388 | string_appendf (*m_buffer, "<target>\n<architecture>%s</architecture>\n", | |
389 | tdesc_architecture_name (e)); | |
390 | ||
391 | const char *osabi = tdesc_osabi_name (e); | |
392 | if (osabi != nullptr) | |
393 | string_appendf (*m_buffer, "<osabi>%s</osabi>", osabi); | |
394 | #endif | |
395 | } | |
396 | ||
397 | void print_xml_feature::visit_post (const target_desc *e) | |
398 | { | |
399 | string_appendf (*m_buffer, "</target>\n"); | |
400 | } |