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ddc8de03 | 1 | /* Library interface to C front end |
99dee823 | 2 | Copyright (C) 2014-2021 Free Software Foundation, Inc. |
ddc8de03 PM |
3 | |
4 | This file is part of GCC. | |
5 | ||
6 | GCC is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 3, or (at your option) any later | |
9 | version. | |
10 | ||
11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GCC; see the file COPYING3. If not see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <cc1plugin-config.h> | |
21 | ||
22 | #undef PACKAGE_NAME | |
23 | #undef PACKAGE_STRING | |
24 | #undef PACKAGE_TARNAME | |
25 | #undef PACKAGE_VERSION | |
26 | ||
27 | #include "../gcc/config.h" | |
28 | ||
29 | #undef PACKAGE_NAME | |
30 | #undef PACKAGE_STRING | |
31 | #undef PACKAGE_TARNAME | |
32 | #undef PACKAGE_VERSION | |
33 | ||
34 | #include "gcc-plugin.h" | |
35 | #include "system.h" | |
36 | #include "coretypes.h" | |
37 | #include "stringpool.h" | |
38 | ||
39 | #include "gcc-interface.h" | |
40e23961 MC |
40 | #include "hash-set.h" |
41 | #include "machmode.h" | |
42 | #include "vec.h" | |
43 | #include "double-int.h" | |
44 | #include "input.h" | |
45 | #include "alias.h" | |
46 | #include "symtab.h" | |
47 | #include "options.h" | |
ddc8de03 | 48 | #include "wide-int.h" |
40e23961 MC |
49 | #include "inchash.h" |
50 | #include "tree.h" | |
51 | #include "fold-const.h" | |
ddc8de03 PM |
52 | #include "stor-layout.h" |
53 | #include "c-tree.h" | |
54 | #include "toplev.h" | |
55 | #include "timevar.h" | |
56 | #include "hash-table.h" | |
57 | #include "tm.h" | |
58 | #include "c-family/c-pragma.h" | |
59 | #include "c-lang.h" | |
60 | #include "diagnostic.h" | |
61 | #include "langhooks.h" | |
62 | #include "langhooks-def.h" | |
63 | ||
64 | #include "callbacks.hh" | |
65 | #include "connection.hh" | |
8db29d88 | 66 | #include "marshall-c.hh" |
ddc8de03 PM |
67 | #include "rpc.hh" |
68 | ||
ddc8de03 PM |
69 | #ifdef __GNUC__ |
70 | #pragma GCC visibility push(default) | |
71 | #endif | |
72 | int plugin_is_GPL_compatible; | |
73 | #ifdef __GNUC__ | |
74 | #pragma GCC visibility pop | |
75 | #endif | |
76 | ||
77 | \f | |
78 | ||
79 | // This is put into the lang hooks when the plugin starts. | |
80 | ||
81 | static void | |
82 | plugin_print_error_function (diagnostic_context *context, const char *file, | |
83 | diagnostic_info *diagnostic) | |
84 | { | |
85 | if (current_function_decl != NULL_TREE | |
86 | && DECL_NAME (current_function_decl) != NULL_TREE | |
87 | && strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)), | |
88 | GCC_FE_WRAPPER_FUNCTION) == 0) | |
89 | return; | |
90 | lhd_print_error_function (context, file, diagnostic); | |
91 | } | |
92 | ||
93 | \f | |
94 | ||
95 | static unsigned long long | |
96 | convert_out (tree t) | |
97 | { | |
98 | return (unsigned long long) (uintptr_t) t; | |
99 | } | |
100 | ||
101 | static tree | |
102 | convert_in (unsigned long long v) | |
103 | { | |
104 | return (tree) (uintptr_t) v; | |
105 | } | |
106 | ||
107 | \f | |
108 | ||
109 | struct decl_addr_value | |
110 | { | |
111 | tree decl; | |
112 | tree address; | |
113 | }; | |
114 | ||
95fbe13e | 115 | struct decl_addr_hasher : free_ptr_hash<decl_addr_value> |
ddc8de03 | 116 | { |
67f58944 TS |
117 | static inline hashval_t hash (const decl_addr_value *); |
118 | static inline bool equal (const decl_addr_value *, const decl_addr_value *); | |
ddc8de03 PM |
119 | }; |
120 | ||
121 | inline hashval_t | |
67f58944 | 122 | decl_addr_hasher::hash (const decl_addr_value *e) |
ddc8de03 PM |
123 | { |
124 | return IDENTIFIER_HASH_VALUE (DECL_NAME (e->decl)); | |
125 | } | |
126 | ||
127 | inline bool | |
67f58944 | 128 | decl_addr_hasher::equal (const decl_addr_value *p1, const decl_addr_value *p2) |
ddc8de03 PM |
129 | { |
130 | return p1->decl == p2->decl; | |
131 | } | |
132 | ||
133 | \f | |
134 | ||
8d67ee55 | 135 | struct string_hasher : nofree_ptr_hash<const char> |
ddc8de03 | 136 | { |
67f58944 | 137 | static inline hashval_t hash (const char *s) |
ddc8de03 PM |
138 | { |
139 | return htab_hash_string (s); | |
140 | } | |
141 | ||
67f58944 | 142 | static inline bool equal (const char *p1, const char *p2) |
ddc8de03 PM |
143 | { |
144 | return strcmp (p1, p2) == 0; | |
145 | } | |
146 | }; | |
147 | ||
148 | \f | |
149 | ||
150 | // A wrapper for pushdecl that doesn't let gdb have a chance to | |
151 | // instantiate a symbol. | |
152 | ||
153 | static void | |
154 | pushdecl_safe (tree decl) | |
155 | { | |
156 | void (*save) (enum c_oracle_request, tree identifier); | |
157 | ||
158 | save = c_binding_oracle; | |
159 | c_binding_oracle = NULL; | |
160 | pushdecl (decl); | |
161 | c_binding_oracle = save; | |
162 | } | |
163 | ||
164 | \f | |
165 | ||
166 | struct plugin_context : public cc1_plugin::connection | |
167 | { | |
168 | plugin_context (int fd); | |
169 | ||
170 | // Map decls to addresses. | |
171 | hash_table<decl_addr_hasher> address_map; | |
172 | ||
173 | // A collection of trees that are preserved for the GC. | |
8d67ee55 | 174 | hash_table< nofree_ptr_hash<tree_node> > preserved; |
ddc8de03 PM |
175 | |
176 | // File name cache. | |
177 | hash_table<string_hasher> file_names; | |
178 | ||
179 | // Perform GC marking. | |
180 | void mark (); | |
181 | ||
182 | // Preserve a tree during the plugin's operation. | |
183 | tree preserve (tree t) | |
184 | { | |
185 | tree_node **slot = preserved.find_slot (t, INSERT); | |
186 | *slot = t; | |
187 | return t; | |
188 | } | |
189 | ||
620e594b DM |
190 | location_t get_location_t (const char *filename, |
191 | unsigned int line_number) | |
ddc8de03 PM |
192 | { |
193 | if (filename == NULL) | |
194 | return UNKNOWN_LOCATION; | |
195 | ||
196 | filename = intern_filename (filename); | |
197 | linemap_add (line_table, LC_ENTER, false, filename, line_number); | |
620e594b | 198 | location_t loc = linemap_line_start (line_table, line_number, 0); |
ddc8de03 PM |
199 | linemap_add (line_table, LC_LEAVE, false, NULL, 0); |
200 | return loc; | |
201 | } | |
202 | ||
203 | private: | |
204 | ||
205 | // Add a file name to FILE_NAMES and return the canonical copy. | |
206 | const char *intern_filename (const char *filename) | |
207 | { | |
67f58944 | 208 | const char **slot = file_names.find_slot (filename, INSERT); |
ddc8de03 PM |
209 | if (*slot == NULL) |
210 | { | |
211 | /* The file name must live as long as the line map, which | |
212 | effectively means as long as this compilation. So, we copy | |
213 | the string here but never free it. */ | |
214 | *slot = xstrdup (filename); | |
215 | } | |
216 | return *slot; | |
217 | } | |
218 | }; | |
219 | ||
220 | static plugin_context *current_context; | |
221 | ||
222 | \f | |
223 | ||
224 | plugin_context::plugin_context (int fd) | |
225 | : cc1_plugin::connection (fd), | |
226 | address_map (30), | |
227 | preserved (30), | |
228 | file_names (30) | |
229 | { | |
230 | } | |
231 | ||
232 | void | |
233 | plugin_context::mark () | |
234 | { | |
235 | for (hash_table<decl_addr_hasher>::iterator it = address_map.begin (); | |
236 | it != address_map.end (); | |
237 | ++it) | |
238 | { | |
239 | ggc_mark ((*it)->decl); | |
240 | ggc_mark ((*it)->address); | |
241 | } | |
242 | ||
8d67ee55 RS |
243 | for (hash_table< nofree_ptr_hash<tree_node> >::iterator |
244 | it = preserved.begin (); it != preserved.end (); ++it) | |
ddc8de03 PM |
245 | ggc_mark (&*it); |
246 | } | |
247 | ||
248 | static void | |
249 | plugin_binding_oracle (enum c_oracle_request kind, tree identifier) | |
250 | { | |
251 | enum gcc_c_oracle_request request; | |
252 | ||
253 | gcc_assert (current_context != NULL); | |
254 | ||
255 | switch (kind) | |
256 | { | |
257 | case C_ORACLE_SYMBOL: | |
258 | request = GCC_C_ORACLE_SYMBOL; | |
259 | break; | |
260 | case C_ORACLE_TAG: | |
261 | request = GCC_C_ORACLE_TAG; | |
262 | break; | |
263 | case C_ORACLE_LABEL: | |
264 | request = GCC_C_ORACLE_LABEL; | |
265 | break; | |
266 | default: | |
267 | abort (); | |
268 | } | |
269 | ||
270 | int ignore; | |
271 | cc1_plugin::call (current_context, "binding_oracle", &ignore, | |
272 | request, IDENTIFIER_POINTER (identifier)); | |
273 | } | |
274 | ||
275 | static void | |
276 | plugin_pragma_user_expression (cpp_reader *) | |
277 | { | |
278 | c_binding_oracle = plugin_binding_oracle; | |
279 | } | |
280 | ||
281 | static void | |
282 | plugin_init_extra_pragmas (void *, void *) | |
283 | { | |
284 | c_register_pragma ("GCC", "user_expression", plugin_pragma_user_expression); | |
285 | } | |
286 | ||
287 | \f | |
288 | ||
289 | // Maybe rewrite a decl to its address. | |
290 | static tree | |
291 | address_rewriter (tree *in, int *walk_subtrees, void *arg) | |
292 | { | |
293 | plugin_context *ctx = (plugin_context *) arg; | |
294 | ||
295 | if (!DECL_P (*in) || DECL_NAME (*in) == NULL_TREE) | |
296 | return NULL_TREE; | |
297 | ||
298 | decl_addr_value value; | |
299 | value.decl = *in; | |
300 | decl_addr_value *found_value = ctx->address_map.find (&value); | |
301 | if (found_value != NULL) | |
8db29d88 | 302 | ; |
ba649812 | 303 | else if (DECL_IS_UNDECLARED_BUILTIN (*in)) |
ddc8de03 PM |
304 | { |
305 | gcc_address address; | |
306 | ||
307 | if (!cc1_plugin::call (ctx, "address_oracle", &address, | |
308 | IDENTIFIER_POINTER (DECL_NAME (*in)))) | |
309 | return NULL_TREE; | |
310 | if (address == 0) | |
311 | return NULL_TREE; | |
312 | ||
313 | // Insert the decl into the address map in case it is referenced | |
314 | // again. | |
315 | value.address = build_int_cst_type (ptr_type_node, address); | |
316 | decl_addr_value **slot = ctx->address_map.find_slot (&value, INSERT); | |
317 | gcc_assert (*slot == NULL); | |
318 | *slot | |
319 | = static_cast<decl_addr_value *> (xmalloc (sizeof (decl_addr_value))); | |
320 | **slot = value; | |
321 | found_value = *slot; | |
322 | } | |
323 | else | |
324 | return NULL_TREE; | |
325 | ||
326 | if (found_value->address != error_mark_node) | |
327 | { | |
328 | // We have an address for the decl, so rewrite the tree. | |
329 | tree ptr_type = build_pointer_type (TREE_TYPE (*in)); | |
330 | *in = fold_build1 (INDIRECT_REF, TREE_TYPE (*in), | |
331 | fold_build1 (CONVERT_EXPR, ptr_type, | |
332 | found_value->address)); | |
333 | } | |
334 | ||
335 | *walk_subtrees = 0; | |
336 | ||
337 | return NULL_TREE; | |
338 | } | |
339 | ||
340 | // When generating code for gdb, we want to be able to use absolute | |
341 | // addresses to refer to otherwise external objects that gdb knows | |
342 | // about. gdb passes in these addresses when building decls, and then | |
343 | // before gimplification we go through the trees, rewriting uses to | |
344 | // the equivalent of "*(TYPE *) ADDR". | |
345 | static void | |
346 | rewrite_decls_to_addresses (void *function_in, void *) | |
347 | { | |
348 | tree function = (tree) function_in; | |
349 | ||
350 | // Do nothing if we're not in gdb. | |
351 | if (current_context == NULL) | |
352 | return; | |
353 | ||
354 | walk_tree (&DECL_SAVED_TREE (function), address_rewriter, current_context, | |
355 | NULL); | |
356 | } | |
357 | ||
358 | \f | |
359 | ||
360 | gcc_decl | |
361 | plugin_build_decl (cc1_plugin::connection *self, | |
362 | const char *name, | |
363 | enum gcc_c_symbol_kind sym_kind, | |
364 | gcc_type sym_type_in, | |
365 | const char *substitution_name, | |
366 | gcc_address address, | |
367 | const char *filename, | |
368 | unsigned int line_number) | |
369 | { | |
370 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
371 | tree identifier = get_identifier (name); | |
372 | enum tree_code code; | |
373 | tree decl; | |
374 | tree sym_type = convert_in (sym_type_in); | |
375 | ||
376 | switch (sym_kind) | |
377 | { | |
378 | case GCC_C_SYMBOL_FUNCTION: | |
379 | code = FUNCTION_DECL; | |
380 | break; | |
381 | ||
382 | case GCC_C_SYMBOL_VARIABLE: | |
383 | code = VAR_DECL; | |
384 | break; | |
385 | ||
386 | case GCC_C_SYMBOL_TYPEDEF: | |
387 | code = TYPE_DECL; | |
388 | break; | |
389 | ||
390 | case GCC_C_SYMBOL_LABEL: | |
391 | // FIXME: we aren't ready to handle labels yet. | |
392 | // It isn't clear how to translate them properly | |
393 | // and in any case a "goto" isn't likely to work. | |
394 | return convert_out (error_mark_node); | |
395 | ||
396 | default: | |
397 | abort (); | |
398 | } | |
399 | ||
620e594b | 400 | location_t loc = ctx->get_location_t (filename, line_number); |
ddc8de03 PM |
401 | |
402 | decl = build_decl (loc, code, identifier, sym_type); | |
403 | TREE_USED (decl) = 1; | |
404 | TREE_ADDRESSABLE (decl) = 1; | |
405 | ||
406 | if (sym_kind != GCC_C_SYMBOL_TYPEDEF) | |
407 | { | |
408 | decl_addr_value value; | |
409 | ||
8db29d88 | 410 | DECL_EXTERNAL (decl) = 1; |
ddc8de03 PM |
411 | value.decl = decl; |
412 | if (substitution_name != NULL) | |
413 | { | |
414 | // If the translator gave us a name without a binding, | |
415 | // we can just substitute error_mark_node, since we know the | |
416 | // translator will be reporting an error anyhow. | |
417 | value.address | |
418 | = lookup_name (get_identifier (substitution_name)); | |
419 | if (value.address == NULL_TREE) | |
420 | value.address = error_mark_node; | |
421 | } | |
422 | else | |
423 | value.address = build_int_cst_type (ptr_type_node, address); | |
424 | decl_addr_value **slot = ctx->address_map.find_slot (&value, INSERT); | |
425 | gcc_assert (*slot == NULL); | |
426 | *slot | |
427 | = static_cast<decl_addr_value *> (xmalloc (sizeof (decl_addr_value))); | |
428 | **slot = value; | |
429 | } | |
430 | ||
431 | return convert_out (ctx->preserve (decl)); | |
432 | } | |
433 | ||
434 | int | |
435 | plugin_bind (cc1_plugin::connection *, | |
436 | gcc_decl decl_in, int is_global) | |
437 | { | |
438 | tree decl = convert_in (decl_in); | |
439 | c_bind (DECL_SOURCE_LOCATION (decl), decl, is_global); | |
440 | rest_of_decl_compilation (decl, is_global, 0); | |
441 | return 1; | |
442 | } | |
443 | ||
444 | int | |
445 | plugin_tagbind (cc1_plugin::connection *self, | |
446 | const char *name, gcc_type tagged_type, | |
447 | const char *filename, unsigned int line_number) | |
448 | { | |
449 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
8db29d88 | 450 | tree t = convert_in (tagged_type), x; |
620e594b | 451 | c_pushtag (ctx->get_location_t (filename, line_number), |
8db29d88 AO |
452 | get_identifier (name), t); |
453 | ||
454 | /* Propagate the newly-added type name so that previously-created | |
455 | variant types are not disconnected from their main variants. */ | |
456 | for (x = TYPE_MAIN_VARIANT (t); x; x = TYPE_NEXT_VARIANT (x)) | |
457 | TYPE_NAME (x) = TYPE_NAME (t); | |
458 | ||
ddc8de03 PM |
459 | return 1; |
460 | } | |
461 | ||
462 | gcc_type | |
463 | plugin_build_pointer_type (cc1_plugin::connection *, | |
464 | gcc_type base_type) | |
465 | { | |
466 | // No need to preserve a pointer type as the base type is preserved. | |
467 | return convert_out (build_pointer_type (convert_in (base_type))); | |
468 | } | |
469 | ||
8db29d88 AO |
470 | // TYPE_NAME needs to be a valid pointer, even if there is no name available. |
471 | ||
472 | static tree | |
473 | build_anonymous_node (enum tree_code code) | |
474 | { | |
475 | tree node = make_node (code); | |
476 | tree type_decl = build_decl (input_location, TYPE_DECL, NULL_TREE, node); | |
477 | TYPE_NAME (node) = type_decl; | |
478 | TYPE_STUB_DECL (node) = type_decl; | |
479 | return node; | |
480 | } | |
481 | ||
ddc8de03 PM |
482 | gcc_type |
483 | plugin_build_record_type (cc1_plugin::connection *self) | |
484 | { | |
485 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
8db29d88 | 486 | return convert_out (ctx->preserve (build_anonymous_node (RECORD_TYPE))); |
ddc8de03 PM |
487 | } |
488 | ||
489 | gcc_type | |
490 | plugin_build_union_type (cc1_plugin::connection *self) | |
491 | { | |
492 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
8db29d88 | 493 | return convert_out (ctx->preserve (build_anonymous_node (UNION_TYPE))); |
ddc8de03 PM |
494 | } |
495 | ||
496 | int | |
497 | plugin_build_add_field (cc1_plugin::connection *, | |
498 | gcc_type record_or_union_type_in, | |
499 | const char *field_name, | |
500 | gcc_type field_type_in, | |
501 | unsigned long bitsize, | |
502 | unsigned long bitpos) | |
503 | { | |
504 | tree record_or_union_type = convert_in (record_or_union_type_in); | |
505 | tree field_type = convert_in (field_type_in); | |
506 | ||
507 | gcc_assert (TREE_CODE (record_or_union_type) == RECORD_TYPE | |
508 | || TREE_CODE (record_or_union_type) == UNION_TYPE); | |
509 | ||
510 | /* Note that gdb does not preserve the location of field decls, so | |
511 | we can't provide a decent location here. */ | |
512 | tree decl = build_decl (BUILTINS_LOCATION, FIELD_DECL, | |
513 | get_identifier (field_name), field_type); | |
514 | DECL_FIELD_CONTEXT (decl) = record_or_union_type; | |
515 | ||
516 | if (TREE_CODE (field_type) == INTEGER_TYPE | |
517 | && TYPE_PRECISION (field_type) != bitsize) | |
518 | { | |
519 | DECL_BIT_FIELD_TYPE (decl) = field_type; | |
520 | TREE_TYPE (decl) | |
521 | = c_build_bitfield_integer_type (bitsize, TYPE_UNSIGNED (field_type)); | |
522 | } | |
523 | ||
899ca90e | 524 | SET_DECL_MODE (decl, TYPE_MODE (TREE_TYPE (decl))); |
ddc8de03 PM |
525 | |
526 | // There's no way to recover this from DWARF. | |
527 | SET_DECL_OFFSET_ALIGN (decl, TYPE_PRECISION (pointer_sized_int_node)); | |
528 | ||
529 | tree pos = bitsize_int (bitpos); | |
530 | pos_from_bit (&DECL_FIELD_OFFSET (decl), &DECL_FIELD_BIT_OFFSET (decl), | |
531 | DECL_OFFSET_ALIGN (decl), pos); | |
532 | ||
533 | DECL_SIZE (decl) = bitsize_int (bitsize); | |
534 | DECL_SIZE_UNIT (decl) = size_int ((bitsize + BITS_PER_UNIT - 1) | |
535 | / BITS_PER_UNIT); | |
536 | ||
537 | DECL_CHAIN (decl) = TYPE_FIELDS (record_or_union_type); | |
538 | TYPE_FIELDS (record_or_union_type) = decl; | |
539 | ||
540 | return 1; | |
541 | } | |
542 | ||
543 | int | |
544 | plugin_finish_record_or_union (cc1_plugin::connection *, | |
545 | gcc_type record_or_union_type_in, | |
546 | unsigned long size_in_bytes) | |
547 | { | |
548 | tree record_or_union_type = convert_in (record_or_union_type_in); | |
549 | ||
550 | gcc_assert (TREE_CODE (record_or_union_type) == RECORD_TYPE | |
551 | || TREE_CODE (record_or_union_type) == UNION_TYPE); | |
552 | ||
553 | /* We built the field list in reverse order, so fix it now. */ | |
554 | TYPE_FIELDS (record_or_union_type) | |
555 | = nreverse (TYPE_FIELDS (record_or_union_type)); | |
556 | ||
557 | if (TREE_CODE (record_or_union_type) == UNION_TYPE) | |
558 | { | |
559 | /* Unions can just be handled by the generic code. */ | |
560 | layout_type (record_or_union_type); | |
561 | } | |
562 | else | |
563 | { | |
564 | // FIXME there's no way to get this from DWARF, | |
565 | // or even, it seems, a particularly good way to deduce it. | |
fe37c7af MM |
566 | SET_TYPE_ALIGN (record_or_union_type, |
567 | TYPE_PRECISION (pointer_sized_int_node)); | |
ddc8de03 PM |
568 | |
569 | TYPE_SIZE (record_or_union_type) = bitsize_int (size_in_bytes | |
570 | * BITS_PER_UNIT); | |
571 | TYPE_SIZE_UNIT (record_or_union_type) = size_int (size_in_bytes); | |
572 | ||
573 | compute_record_mode (record_or_union_type); | |
574 | finish_bitfield_layout (record_or_union_type); | |
575 | // FIXME we have no idea about TYPE_PACKED | |
576 | } | |
577 | ||
8db29d88 AO |
578 | tree t = record_or_union_type, x; |
579 | for (x = TYPE_MAIN_VARIANT (t); x; x = TYPE_NEXT_VARIANT (x)) | |
580 | { | |
581 | /* Like finish_struct, update the qualified variant types. */ | |
582 | TYPE_FIELDS (x) = TYPE_FIELDS (t); | |
583 | TYPE_LANG_SPECIFIC (x) = TYPE_LANG_SPECIFIC (t); | |
584 | C_TYPE_FIELDS_READONLY (x) = C_TYPE_FIELDS_READONLY (t); | |
585 | C_TYPE_FIELDS_VOLATILE (x) = C_TYPE_FIELDS_VOLATILE (t); | |
586 | C_TYPE_VARIABLE_SIZE (x) = C_TYPE_VARIABLE_SIZE (t); | |
587 | /* We copy these fields too. */ | |
588 | SET_TYPE_ALIGN (x, TYPE_ALIGN (t)); | |
589 | TYPE_SIZE (x) = TYPE_SIZE (t); | |
590 | TYPE_SIZE_UNIT (x) = TYPE_SIZE_UNIT (t); | |
591 | if (x != record_or_union_type) | |
592 | compute_record_mode (x); | |
593 | } | |
594 | ||
ddc8de03 PM |
595 | return 1; |
596 | } | |
597 | ||
598 | gcc_type | |
599 | plugin_build_enum_type (cc1_plugin::connection *self, | |
600 | gcc_type underlying_int_type_in) | |
601 | { | |
602 | tree underlying_int_type = convert_in (underlying_int_type_in); | |
603 | ||
604 | if (underlying_int_type == error_mark_node) | |
605 | return convert_out (error_mark_node); | |
606 | ||
8db29d88 | 607 | tree result = build_anonymous_node (ENUMERAL_TYPE); |
ddc8de03 PM |
608 | |
609 | TYPE_PRECISION (result) = TYPE_PRECISION (underlying_int_type); | |
610 | TYPE_UNSIGNED (result) = TYPE_UNSIGNED (underlying_int_type); | |
611 | ||
612 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
613 | return convert_out (ctx->preserve (result)); | |
614 | } | |
615 | ||
616 | int | |
617 | plugin_build_add_enum_constant (cc1_plugin::connection *, | |
618 | gcc_type enum_type_in, | |
619 | const char *name, | |
620 | unsigned long value) | |
621 | { | |
622 | tree cst, decl, cons; | |
623 | tree enum_type = convert_in (enum_type_in); | |
624 | ||
625 | gcc_assert (TREE_CODE (enum_type) == ENUMERAL_TYPE); | |
626 | ||
627 | cst = build_int_cst (enum_type, value); | |
628 | /* Note that gdb does not preserve the location of enum constants, | |
629 | so we can't provide a decent location here. */ | |
630 | decl = build_decl (BUILTINS_LOCATION, CONST_DECL, | |
631 | get_identifier (name), enum_type); | |
632 | DECL_INITIAL (decl) = cst; | |
633 | pushdecl_safe (decl); | |
634 | ||
635 | cons = tree_cons (DECL_NAME (decl), cst, TYPE_VALUES (enum_type)); | |
636 | TYPE_VALUES (enum_type) = cons; | |
637 | ||
638 | return 1; | |
639 | } | |
640 | ||
641 | int | |
642 | plugin_finish_enum_type (cc1_plugin::connection *, | |
643 | gcc_type enum_type_in) | |
644 | { | |
645 | tree enum_type = convert_in (enum_type_in); | |
646 | tree minnode, maxnode, iter; | |
647 | ||
648 | iter = TYPE_VALUES (enum_type); | |
649 | minnode = maxnode = TREE_VALUE (iter); | |
650 | for (iter = TREE_CHAIN (iter); | |
651 | iter != NULL_TREE; | |
652 | iter = TREE_CHAIN (iter)) | |
653 | { | |
654 | tree value = TREE_VALUE (iter); | |
655 | if (tree_int_cst_lt (maxnode, value)) | |
656 | maxnode = value; | |
657 | if (tree_int_cst_lt (value, minnode)) | |
658 | minnode = value; | |
659 | } | |
660 | TYPE_MIN_VALUE (enum_type) = minnode; | |
661 | TYPE_MAX_VALUE (enum_type) = maxnode; | |
662 | ||
663 | layout_type (enum_type); | |
664 | ||
665 | return 1; | |
666 | } | |
667 | ||
668 | gcc_type | |
669 | plugin_build_function_type (cc1_plugin::connection *self, | |
670 | gcc_type return_type_in, | |
671 | const struct gcc_type_array *argument_types_in, | |
672 | int is_varargs) | |
673 | { | |
674 | tree *argument_types; | |
675 | tree return_type = convert_in (return_type_in); | |
676 | tree result; | |
677 | ||
678 | argument_types = new tree[argument_types_in->n_elements]; | |
679 | for (int i = 0; i < argument_types_in->n_elements; ++i) | |
680 | argument_types[i] = convert_in (argument_types_in->elements[i]); | |
681 | ||
682 | if (is_varargs) | |
683 | result = build_varargs_function_type_array (return_type, | |
684 | argument_types_in->n_elements, | |
685 | argument_types); | |
686 | else | |
687 | result = build_function_type_array (return_type, | |
688 | argument_types_in->n_elements, | |
689 | argument_types); | |
690 | ||
691 | delete[] argument_types; | |
692 | ||
693 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
694 | return convert_out (ctx->preserve (result)); | |
695 | } | |
696 | ||
8db29d88 AO |
697 | /* Return a builtin type associated with BUILTIN_NAME. */ |
698 | ||
699 | static tree | |
700 | safe_lookup_builtin_type (const char *builtin_name) | |
701 | { | |
702 | tree result = NULL_TREE; | |
703 | ||
704 | if (!builtin_name) | |
705 | return result; | |
706 | ||
707 | result = identifier_global_value (get_identifier (builtin_name)); | |
708 | ||
709 | if (!result) | |
710 | return result; | |
711 | ||
712 | gcc_assert (TREE_CODE (result) == TYPE_DECL); | |
713 | result = TREE_TYPE (result); | |
714 | return result; | |
715 | } | |
716 | ||
717 | static gcc_type | |
718 | plugin_int_check (cc1_plugin::connection *self, | |
719 | int is_unsigned, unsigned long size_in_bytes, | |
720 | tree result) | |
ddc8de03 | 721 | { |
ddc8de03 PM |
722 | if (result == NULL_TREE) |
723 | result = error_mark_node; | |
724 | else | |
725 | { | |
8db29d88 AO |
726 | gcc_assert (!TYPE_UNSIGNED (result) == !is_unsigned); |
727 | gcc_assert (TREE_CODE (TYPE_SIZE (result)) == INTEGER_CST); | |
728 | gcc_assert (TYPE_PRECISION (result) == BITS_PER_UNIT * size_in_bytes); | |
729 | ||
ddc8de03 PM |
730 | plugin_context *ctx = static_cast<plugin_context *> (self); |
731 | ctx->preserve (result); | |
732 | } | |
733 | return convert_out (result); | |
734 | } | |
735 | ||
736 | gcc_type | |
8db29d88 AO |
737 | plugin_int_type_v0 (cc1_plugin::connection *self, |
738 | int is_unsigned, unsigned long size_in_bytes) | |
739 | { | |
740 | tree result = c_common_type_for_size (BITS_PER_UNIT * size_in_bytes, | |
741 | is_unsigned); | |
742 | ||
743 | return plugin_int_check (self, is_unsigned, size_in_bytes, result); | |
744 | } | |
745 | ||
746 | gcc_type | |
747 | plugin_int_type (cc1_plugin::connection *self, | |
748 | int is_unsigned, unsigned long size_in_bytes, | |
749 | const char *builtin_name) | |
750 | { | |
751 | if (!builtin_name) | |
752 | return plugin_int_type_v0 (self, is_unsigned, size_in_bytes); | |
753 | ||
754 | tree result = safe_lookup_builtin_type (builtin_name); | |
755 | gcc_assert (!result || TREE_CODE (result) == INTEGER_TYPE); | |
756 | ||
757 | return plugin_int_check (self, is_unsigned, size_in_bytes, result); | |
758 | } | |
759 | ||
760 | gcc_type | |
761 | plugin_char_type (cc1_plugin::connection *) | |
762 | { | |
763 | return convert_out (char_type_node); | |
764 | } | |
765 | ||
766 | gcc_type | |
767 | plugin_float_type_v0 (cc1_plugin::connection *, | |
ddc8de03 PM |
768 | unsigned long size_in_bytes) |
769 | { | |
770 | if (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (float_type_node)) | |
771 | return convert_out (float_type_node); | |
772 | if (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (double_type_node)) | |
773 | return convert_out (double_type_node); | |
774 | if (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (long_double_type_node)) | |
775 | return convert_out (long_double_type_node); | |
776 | return convert_out (error_mark_node); | |
777 | } | |
778 | ||
8db29d88 AO |
779 | gcc_type |
780 | plugin_float_type (cc1_plugin::connection *self, | |
781 | unsigned long size_in_bytes, | |
782 | const char *builtin_name) | |
783 | { | |
784 | if (!builtin_name) | |
785 | return plugin_float_type_v0 (self, size_in_bytes); | |
786 | ||
787 | tree result = safe_lookup_builtin_type (builtin_name); | |
788 | ||
789 | if (!result) | |
790 | return convert_out (error_mark_node); | |
791 | ||
792 | gcc_assert (TREE_CODE (result) == REAL_TYPE); | |
793 | gcc_assert (BITS_PER_UNIT * size_in_bytes == TYPE_PRECISION (result)); | |
794 | ||
795 | return convert_out (result); | |
796 | } | |
797 | ||
ddc8de03 PM |
798 | gcc_type |
799 | plugin_void_type (cc1_plugin::connection *) | |
800 | { | |
801 | return convert_out (void_type_node); | |
802 | } | |
803 | ||
804 | gcc_type | |
805 | plugin_bool_type (cc1_plugin::connection *) | |
806 | { | |
807 | return convert_out (boolean_type_node); | |
808 | } | |
809 | ||
810 | gcc_type | |
811 | plugin_build_array_type (cc1_plugin::connection *self, | |
812 | gcc_type element_type_in, int num_elements) | |
813 | { | |
814 | tree element_type = convert_in (element_type_in); | |
815 | tree result; | |
816 | ||
817 | if (num_elements == -1) | |
818 | result = build_array_type (element_type, NULL_TREE); | |
819 | else | |
820 | result = build_array_type_nelts (element_type, num_elements); | |
821 | ||
822 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
823 | return convert_out (ctx->preserve (result)); | |
824 | } | |
825 | ||
826 | gcc_type | |
827 | plugin_build_vla_array_type (cc1_plugin::connection *self, | |
828 | gcc_type element_type_in, | |
829 | const char *upper_bound_name) | |
830 | { | |
831 | tree element_type = convert_in (element_type_in); | |
832 | tree upper_bound = lookup_name (get_identifier (upper_bound_name)); | |
833 | tree range = build_index_type (upper_bound); | |
834 | ||
835 | tree result = build_array_type (element_type, range); | |
836 | C_TYPE_VARIABLE_SIZE (result) = 1; | |
837 | ||
838 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
839 | return convert_out (ctx->preserve (result)); | |
840 | } | |
841 | ||
842 | gcc_type | |
843 | plugin_build_qualified_type (cc1_plugin::connection *, | |
844 | gcc_type unqualified_type_in, | |
845 | enum gcc_qualifiers qualifiers) | |
846 | { | |
847 | tree unqualified_type = convert_in (unqualified_type_in); | |
848 | int quals = 0; | |
849 | ||
850 | if ((qualifiers & GCC_QUALIFIER_CONST) != 0) | |
851 | quals |= TYPE_QUAL_CONST; | |
852 | if ((qualifiers & GCC_QUALIFIER_VOLATILE) != 0) | |
853 | quals |= TYPE_QUAL_VOLATILE; | |
854 | if ((qualifiers & GCC_QUALIFIER_RESTRICT) != 0) | |
855 | quals |= TYPE_QUAL_RESTRICT; | |
856 | ||
857 | return convert_out (build_qualified_type (unqualified_type, quals)); | |
858 | } | |
859 | ||
860 | gcc_type | |
861 | plugin_build_complex_type (cc1_plugin::connection *self, | |
862 | gcc_type base_type) | |
863 | { | |
864 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
865 | return convert_out (ctx->preserve (build_complex_type (convert_in (base_type)))); | |
866 | } | |
867 | ||
868 | gcc_type | |
869 | plugin_build_vector_type (cc1_plugin::connection *self, | |
870 | gcc_type base_type, int nunits) | |
871 | { | |
872 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
873 | return convert_out (ctx->preserve (build_vector_type (convert_in (base_type), | |
874 | nunits))); | |
875 | } | |
876 | ||
877 | int | |
878 | plugin_build_constant (cc1_plugin::connection *self, gcc_type type_in, | |
879 | const char *name, unsigned long value, | |
880 | const char *filename, unsigned int line_number) | |
881 | { | |
882 | plugin_context *ctx = static_cast<plugin_context *> (self); | |
883 | tree cst, decl; | |
884 | tree type = convert_in (type_in); | |
885 | ||
886 | cst = build_int_cst (type, value); | |
620e594b | 887 | decl = build_decl (ctx->get_location_t (filename, line_number), |
ddc8de03 PM |
888 | CONST_DECL, get_identifier (name), type); |
889 | DECL_INITIAL (decl) = cst; | |
890 | pushdecl_safe (decl); | |
891 | ||
892 | return 1; | |
893 | } | |
894 | ||
895 | gcc_type | |
896 | plugin_error (cc1_plugin::connection *, | |
897 | const char *message) | |
898 | { | |
899 | error ("%s", message); | |
900 | return convert_out (error_mark_node); | |
901 | } | |
902 | ||
903 | \f | |
904 | ||
905 | // Perform GC marking. | |
906 | ||
907 | static void | |
908 | gc_mark (void *, void *) | |
909 | { | |
910 | if (current_context != NULL) | |
911 | current_context->mark (); | |
912 | } | |
913 | ||
914 | #ifdef __GNUC__ | |
915 | #pragma GCC visibility push(default) | |
916 | #endif | |
917 | ||
918 | int | |
919 | plugin_init (struct plugin_name_args *plugin_info, | |
920 | struct plugin_gcc_version *) | |
921 | { | |
922 | long fd = -1; | |
923 | for (int i = 0; i < plugin_info->argc; ++i) | |
924 | { | |
925 | if (strcmp (plugin_info->argv[i].key, "fd") == 0) | |
926 | { | |
927 | char *tail; | |
928 | errno = 0; | |
929 | fd = strtol (plugin_info->argv[i].value, &tail, 0); | |
930 | if (*tail != '\0' || errno != 0) | |
40fecdd6 JM |
931 | fatal_error (input_location, |
932 | "%s: invalid file descriptor argument to plugin", | |
ddc8de03 PM |
933 | plugin_info->base_name); |
934 | break; | |
935 | } | |
936 | } | |
937 | if (fd == -1) | |
40fecdd6 JM |
938 | fatal_error (input_location, |
939 | "%s: required plugin argument %<fd%> is missing", | |
ddc8de03 PM |
940 | plugin_info->base_name); |
941 | ||
942 | current_context = new plugin_context (fd); | |
943 | ||
944 | // Handshake. | |
945 | cc1_plugin::protocol_int version; | |
946 | if (!current_context->require ('H') | |
947 | || ! ::cc1_plugin::unmarshall (current_context, &version)) | |
40fecdd6 JM |
948 | fatal_error (input_location, |
949 | "%s: handshake failed", plugin_info->base_name); | |
8db29d88 | 950 | if (version != GCC_C_FE_VERSION_1) |
40fecdd6 JM |
951 | fatal_error (input_location, |
952 | "%s: unknown version in handshake", plugin_info->base_name); | |
ddc8de03 PM |
953 | |
954 | register_callback (plugin_info->base_name, PLUGIN_PRAGMAS, | |
955 | plugin_init_extra_pragmas, NULL); | |
956 | register_callback (plugin_info->base_name, PLUGIN_PRE_GENERICIZE, | |
957 | rewrite_decls_to_addresses, NULL); | |
958 | register_callback (plugin_info->base_name, PLUGIN_GGC_MARKING, | |
959 | gc_mark, NULL); | |
960 | ||
961 | lang_hooks.print_error_function = plugin_print_error_function; | |
962 | ||
963 | #define GCC_METHOD0(R, N) \ | |
964 | { \ | |
965 | cc1_plugin::callback_ftype *fun \ | |
966 | = cc1_plugin::callback<R, plugin_ ## N>; \ | |
967 | current_context->add_callback (# N, fun); \ | |
968 | } | |
969 | #define GCC_METHOD1(R, N, A) \ | |
970 | { \ | |
971 | cc1_plugin::callback_ftype *fun \ | |
972 | = cc1_plugin::callback<R, A, plugin_ ## N>; \ | |
973 | current_context->add_callback (# N, fun); \ | |
974 | } | |
975 | #define GCC_METHOD2(R, N, A, B) \ | |
976 | { \ | |
977 | cc1_plugin::callback_ftype *fun \ | |
978 | = cc1_plugin::callback<R, A, B, plugin_ ## N>; \ | |
979 | current_context->add_callback (# N, fun); \ | |
980 | } | |
981 | #define GCC_METHOD3(R, N, A, B, C) \ | |
982 | { \ | |
983 | cc1_plugin::callback_ftype *fun \ | |
984 | = cc1_plugin::callback<R, A, B, C, plugin_ ## N>; \ | |
985 | current_context->add_callback (# N, fun); \ | |
986 | } | |
987 | #define GCC_METHOD4(R, N, A, B, C, D) \ | |
988 | { \ | |
989 | cc1_plugin::callback_ftype *fun \ | |
990 | = cc1_plugin::callback<R, A, B, C, D, \ | |
991 | plugin_ ## N>; \ | |
992 | current_context->add_callback (# N, fun); \ | |
993 | } | |
994 | #define GCC_METHOD5(R, N, A, B, C, D, E) \ | |
995 | { \ | |
996 | cc1_plugin::callback_ftype *fun \ | |
997 | = cc1_plugin::callback<R, A, B, C, D, E, \ | |
998 | plugin_ ## N>; \ | |
999 | current_context->add_callback (# N, fun); \ | |
1000 | } | |
1001 | #define GCC_METHOD7(R, N, A, B, C, D, E, F, G) \ | |
1002 | { \ | |
1003 | cc1_plugin::callback_ftype *fun \ | |
1004 | = cc1_plugin::callback<R, A, B, C, D, E, F, G, \ | |
1005 | plugin_ ## N>; \ | |
1006 | current_context->add_callback (# N, fun); \ | |
1007 | } | |
1008 | ||
1009 | #include "gcc-c-fe.def" | |
1010 | ||
1011 | #undef GCC_METHOD0 | |
1012 | #undef GCC_METHOD1 | |
1013 | #undef GCC_METHOD2 | |
1014 | #undef GCC_METHOD3 | |
1015 | #undef GCC_METHOD4 | |
1016 | #undef GCC_METHOD5 | |
1017 | #undef GCC_METHOD7 | |
1018 | ||
1019 | return 0; | |
1020 | } |