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c6a13190 | 1 | /* Output Go language descriptions of types. |
8d9254fc | 2 | Copyright (C) 2008-2020 Free Software Foundation, Inc. |
c6a13190 ILT |
3 | Written by Ian Lance Taylor <iant@google.com>. |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it under | |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 3, or (at your option) any later | |
10 | version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | /* This file is used during the build process to emit Go language | |
22 | descriptions of declarations from C header files. It uses the | |
23 | debug info hooks to emit the descriptions. The Go language | |
24 | descriptions then become part of the Go runtime support | |
25 | library. | |
26 | ||
27 | All global names are output with a leading underscore, so that they | |
28 | are all hidden in Go. */ | |
29 | ||
30 | #include "config.h" | |
31 | #include "system.h" | |
32 | #include "coretypes.h" | |
957060b5 | 33 | #include "tree.h" |
957060b5 | 34 | #include "diagnostic-core.h" |
957060b5 | 35 | #include "debug.h" |
4bbed9ce | 36 | #include "stor-layout.h" |
c6a13190 ILT |
37 | |
38 | /* We dump this information from the debug hooks. This gives us a | |
39 | stable and maintainable API to hook into. In order to work | |
40 | correctly when -g is used, we build our own hooks structure which | |
41 | wraps the hooks we need to change. */ | |
42 | ||
43 | /* Our debug hooks. This is initialized by dump_go_spec_init. */ | |
44 | ||
45 | static struct gcc_debug_hooks go_debug_hooks; | |
46 | ||
47 | /* The real debug hooks. */ | |
48 | ||
49 | static const struct gcc_debug_hooks *real_debug_hooks; | |
50 | ||
51 | /* The file where we should write information. */ | |
52 | ||
53 | static FILE *go_dump_file; | |
54 | ||
55 | /* A queue of decls to output. */ | |
56 | ||
9771b263 | 57 | static GTY(()) vec<tree, va_gc> *queue; |
c6a13190 ILT |
58 | |
59 | /* A hash table of macros we have seen. */ | |
60 | ||
61 | static htab_t macro_hash; | |
62 | ||
5743331e ILT |
63 | /* The type of a value in macro_hash. */ |
64 | ||
65 | struct macro_hash_value | |
66 | { | |
67 | /* The name stored in the hash table. */ | |
68 | char *name; | |
69 | /* The value of the macro. */ | |
70 | char *value; | |
71 | }; | |
72 | ||
4bbed9ce DV |
73 | /* Returns the number of units necessary to represent an integer with the given |
74 | PRECISION (in bits). */ | |
75 | ||
76 | static inline unsigned int | |
77 | precision_to_units (unsigned int precision) | |
78 | { | |
79 | return (precision + BITS_PER_UNIT - 1) / BITS_PER_UNIT; | |
80 | } | |
81 | ||
5743331e ILT |
82 | /* Calculate the hash value for an entry in the macro hash table. */ |
83 | ||
84 | static hashval_t | |
85 | macro_hash_hashval (const void *val) | |
86 | { | |
87 | const struct macro_hash_value *mhval = (const struct macro_hash_value *) val; | |
88 | return htab_hash_string (mhval->name); | |
89 | } | |
90 | ||
91 | /* Compare values in the macro hash table for equality. */ | |
92 | ||
93 | static int | |
94 | macro_hash_eq (const void *v1, const void *v2) | |
95 | { | |
96 | const struct macro_hash_value *mhv1 = (const struct macro_hash_value *) v1; | |
97 | const struct macro_hash_value *mhv2 = (const struct macro_hash_value *) v2; | |
98 | return strcmp (mhv1->name, mhv2->name) == 0; | |
99 | } | |
100 | ||
101 | /* Free values deleted from the macro hash table. */ | |
102 | ||
103 | static void | |
104 | macro_hash_del (void *v) | |
105 | { | |
106 | struct macro_hash_value *mhv = (struct macro_hash_value *) v; | |
107 | XDELETEVEC (mhv->name); | |
108 | XDELETEVEC (mhv->value); | |
109 | XDELETE (mhv); | |
110 | } | |
111 | ||
112 | /* For the string hash tables. */ | |
c6a13190 ILT |
113 | |
114 | static int | |
115 | string_hash_eq (const void *y1, const void *y2) | |
116 | { | |
117 | return strcmp ((const char *) y1, (const char *) y2) == 0; | |
118 | } | |
119 | ||
120 | /* A macro definition. */ | |
121 | ||
122 | static void | |
123 | go_define (unsigned int lineno, const char *buffer) | |
124 | { | |
125 | const char *p; | |
126 | const char *name_end; | |
5743331e | 127 | size_t out_len; |
c6a13190 ILT |
128 | char *out_buffer; |
129 | char *q; | |
82c03907 ILT |
130 | bool saw_operand; |
131 | bool need_operand; | |
5743331e | 132 | struct macro_hash_value *mhval; |
c6a13190 ILT |
133 | char *copy; |
134 | hashval_t hashval; | |
135 | void **slot; | |
136 | ||
137 | real_debug_hooks->define (lineno, buffer); | |
138 | ||
139 | /* Skip macro functions. */ | |
140 | for (p = buffer; *p != '\0' && *p != ' '; ++p) | |
141 | if (*p == '(') | |
142 | return; | |
143 | ||
144 | if (*p == '\0') | |
145 | return; | |
146 | ||
147 | name_end = p; | |
148 | ||
149 | ++p; | |
150 | if (*p == '\0') | |
151 | return; | |
152 | ||
153 | copy = XNEWVEC (char, name_end - buffer + 1); | |
154 | memcpy (copy, buffer, name_end - buffer); | |
155 | copy[name_end - buffer] = '\0'; | |
156 | ||
5743331e ILT |
157 | mhval = XNEW (struct macro_hash_value); |
158 | mhval->name = copy; | |
159 | mhval->value = NULL; | |
160 | ||
c6a13190 | 161 | hashval = htab_hash_string (copy); |
5743331e | 162 | slot = htab_find_slot_with_hash (macro_hash, mhval, hashval, NO_INSERT); |
c6a13190 ILT |
163 | |
164 | /* For simplicity, we force all names to be hidden by adding an | |
165 | initial underscore, and let the user undo this as needed. */ | |
5743331e ILT |
166 | out_len = strlen (p) * 2 + 1; |
167 | out_buffer = XNEWVEC (char, out_len); | |
c6a13190 | 168 | q = out_buffer; |
82c03907 ILT |
169 | saw_operand = false; |
170 | need_operand = false; | |
c6a13190 ILT |
171 | while (*p != '\0') |
172 | { | |
82c03907 | 173 | switch (*p) |
c6a13190 | 174 | { |
82c03907 ILT |
175 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': |
176 | case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': | |
177 | case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': | |
178 | case 'S': case 'T': case 'U': case 'V': case 'W': case 'X': | |
179 | case 'Y': case 'Z': | |
180 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
181 | case 'g': case 'h': case 'i': case 'j': case 'k': case 'l': | |
182 | case 'm': case 'n': case 'o': case 'p': case 'q': case 'r': | |
183 | case 's': case 't': case 'u': case 'v': case 'w': case 'x': | |
184 | case 'y': case 'z': | |
185 | case '_': | |
186 | { | |
187 | /* The start of an identifier. Technically we should also | |
188 | worry about UTF-8 identifiers, but they are not a | |
189 | problem for practical uses of -fdump-go-spec so we | |
190 | don't worry about them. */ | |
191 | const char *start; | |
192 | char *n; | |
5743331e | 193 | struct macro_hash_value idval; |
82c03907 | 194 | |
9b798ac5 ILT |
195 | if (saw_operand) |
196 | goto unknown; | |
197 | ||
82c03907 ILT |
198 | start = p; |
199 | while (ISALNUM (*p) || *p == '_') | |
200 | ++p; | |
201 | n = XALLOCAVEC (char, p - start + 1); | |
202 | memcpy (n, start, p - start); | |
203 | n[p - start] = '\0'; | |
5743331e ILT |
204 | idval.name = n; |
205 | idval.value = NULL; | |
206 | if (htab_find (macro_hash, &idval) == NULL) | |
82c03907 ILT |
207 | { |
208 | /* This is a reference to a name which was not defined | |
209 | as a macro. */ | |
210 | goto unknown; | |
211 | } | |
212 | ||
213 | *q++ = '_'; | |
214 | memcpy (q, start, p - start); | |
215 | q += p - start; | |
216 | ||
217 | saw_operand = true; | |
218 | need_operand = false; | |
219 | } | |
220 | break; | |
221 | ||
222 | case '.': | |
223 | if (!ISDIGIT (p[1])) | |
224 | goto unknown; | |
225 | /* Fall through. */ | |
226 | case '0': case '1': case '2': case '3': case '4': | |
227 | case '5': case '6': case '7': case '8': case '9': | |
228 | { | |
229 | const char *start; | |
230 | bool is_hex; | |
231 | ||
232 | start = p; | |
233 | is_hex = false; | |
234 | if (*p == '0' && (p[1] == 'x' || p[1] == 'X')) | |
235 | { | |
236 | p += 2; | |
237 | is_hex = true; | |
238 | } | |
239 | while (ISDIGIT (*p) || *p == '.' || *p == 'e' || *p == 'E' | |
240 | || (is_hex | |
241 | && ((*p >= 'a' && *p <= 'f') | |
242 | || (*p >= 'A' && *p <= 'F')))) | |
243 | ++p; | |
244 | memcpy (q, start, p - start); | |
245 | q += p - start; | |
246 | while (*p == 'u' || *p == 'U' || *p == 'l' || *p == 'L' | |
247 | || *p == 'f' || *p == 'F' | |
248 | || *p == 'd' || *p == 'D') | |
249 | { | |
250 | /* Go doesn't use any of these trailing type | |
251 | modifiers. */ | |
252 | ++p; | |
253 | } | |
254 | ||
255 | /* We'll pick up the exponent, if any, as an | |
256 | expression. */ | |
257 | ||
258 | saw_operand = true; | |
259 | need_operand = false; | |
260 | } | |
261 | break; | |
262 | ||
263 | case ' ': case '\t': | |
264 | *q++ = *p++; | |
265 | break; | |
266 | ||
267 | case '(': | |
268 | /* Always OK, not part of an operand, presumed to start an | |
269 | operand. */ | |
270 | *q++ = *p++; | |
271 | saw_operand = false; | |
272 | need_operand = false; | |
273 | break; | |
274 | ||
275 | case ')': | |
276 | /* OK if we don't need an operand, and presumed to indicate | |
277 | an operand. */ | |
278 | if (need_operand) | |
279 | goto unknown; | |
280 | *q++ = *p++; | |
281 | saw_operand = true; | |
282 | break; | |
283 | ||
284 | case '+': case '-': | |
285 | /* Always OK, but not part of an operand. */ | |
286 | *q++ = *p++; | |
287 | saw_operand = false; | |
288 | break; | |
289 | ||
290 | case '*': case '/': case '%': case '|': case '&': case '^': | |
291 | /* Must be a binary operator. */ | |
292 | if (!saw_operand) | |
293 | goto unknown; | |
294 | *q++ = *p++; | |
295 | saw_operand = false; | |
296 | need_operand = true; | |
297 | break; | |
298 | ||
299 | case '=': | |
300 | *q++ = *p++; | |
301 | if (*p != '=') | |
302 | goto unknown; | |
303 | /* Must be a binary operator. */ | |
304 | if (!saw_operand) | |
305 | goto unknown; | |
306 | *q++ = *p++; | |
307 | saw_operand = false; | |
308 | need_operand = true; | |
309 | break; | |
310 | ||
311 | case '!': | |
312 | *q++ = *p++; | |
313 | if (*p == '=') | |
c6a13190 | 314 | { |
82c03907 ILT |
315 | /* Must be a binary operator. */ |
316 | if (!saw_operand) | |
317 | goto unknown; | |
318 | *q++ = *p++; | |
319 | saw_operand = false; | |
320 | need_operand = true; | |
c6a13190 | 321 | } |
82c03907 | 322 | else |
c6a13190 | 323 | { |
82c03907 ILT |
324 | /* Must be a unary operator. */ |
325 | if (saw_operand) | |
326 | goto unknown; | |
327 | need_operand = true; | |
c6a13190 | 328 | } |
82c03907 ILT |
329 | break; |
330 | ||
331 | case '<': case '>': | |
332 | /* Must be a binary operand, may be << or >> or <= or >=. */ | |
333 | if (!saw_operand) | |
334 | goto unknown; | |
335 | *q++ = *p++; | |
336 | if (*p == *(p - 1) || *p == '=') | |
337 | *q++ = *p++; | |
338 | saw_operand = false; | |
339 | need_operand = true; | |
340 | break; | |
341 | ||
342 | case '~': | |
343 | /* Must be a unary operand, must be translated for Go. */ | |
344 | if (saw_operand) | |
345 | goto unknown; | |
346 | *q++ = '^'; | |
347 | p++; | |
348 | need_operand = true; | |
349 | break; | |
350 | ||
351 | case '"': | |
352 | case '\'': | |
353 | { | |
936fd13c | 354 | char quote; |
9e4ef69e | 355 | int count; |
936fd13c ILT |
356 | |
357 | if (saw_operand) | |
358 | goto unknown; | |
359 | quote = *p; | |
82c03907 | 360 | *q++ = *p++; |
9e4ef69e | 361 | count = 0; |
82c03907 ILT |
362 | while (*p != quote) |
363 | { | |
364 | int c; | |
365 | ||
366 | if (*p == '\0') | |
367 | goto unknown; | |
368 | ||
9e4ef69e ILT |
369 | ++count; |
370 | ||
82c03907 ILT |
371 | if (*p != '\\') |
372 | { | |
373 | *q++ = *p++; | |
374 | continue; | |
375 | } | |
376 | ||
377 | *q++ = *p++; | |
378 | switch (*p) | |
379 | { | |
380 | case '0': case '1': case '2': case '3': | |
381 | case '4': case '5': case '6': case '7': | |
382 | c = 0; | |
383 | while (*p >= '0' && *p <= '7') | |
384 | { | |
385 | *q++ = *p++; | |
386 | ++c; | |
387 | } | |
388 | /* Go octal characters are always 3 | |
389 | digits. */ | |
390 | if (c != 3) | |
391 | goto unknown; | |
392 | break; | |
393 | ||
394 | case 'x': | |
395 | *q++ = *p++; | |
396 | c = 0; | |
397 | while (ISXDIGIT (*p)) | |
398 | { | |
399 | *q++ = *p++; | |
400 | ++c; | |
401 | } | |
402 | /* Go hex characters are always 2 digits. */ | |
403 | if (c != 2) | |
404 | goto unknown; | |
405 | break; | |
406 | ||
407 | case 'a': case 'b': case 'f': case 'n': case 'r': | |
408 | case 't': case 'v': case '\\': case '\'': case '"': | |
409 | *q++ = *p++; | |
410 | break; | |
411 | ||
412 | default: | |
413 | goto unknown; | |
414 | } | |
415 | } | |
9e4ef69e | 416 | |
82c03907 | 417 | *q++ = *p++; |
9e4ef69e ILT |
418 | |
419 | if (quote == '\'' && count != 1) | |
420 | goto unknown; | |
421 | ||
422 | saw_operand = true; | |
423 | need_operand = false; | |
424 | ||
82c03907 ILT |
425 | break; |
426 | } | |
427 | ||
428 | default: | |
429 | goto unknown; | |
c6a13190 ILT |
430 | } |
431 | } | |
82c03907 ILT |
432 | |
433 | if (need_operand) | |
434 | goto unknown; | |
435 | ||
5743331e | 436 | gcc_assert ((size_t) (q - out_buffer) < out_len); |
c6a13190 ILT |
437 | *q = '\0'; |
438 | ||
5743331e | 439 | mhval->value = out_buffer; |
c6a13190 | 440 | |
5743331e ILT |
441 | if (slot == NULL) |
442 | { | |
443 | slot = htab_find_slot_with_hash (macro_hash, mhval, hashval, INSERT); | |
444 | gcc_assert (slot != NULL && *slot == NULL); | |
445 | } | |
446 | else | |
447 | { | |
448 | if (*slot != NULL) | |
449 | macro_hash_del (*slot); | |
450 | } | |
451 | ||
452 | *slot = mhval; | |
c6a13190 | 453 | |
82c03907 ILT |
454 | return; |
455 | ||
456 | unknown: | |
457 | fprintf (go_dump_file, "// unknowndefine %s\n", buffer); | |
5743331e ILT |
458 | if (slot != NULL) |
459 | htab_clear_slot (macro_hash, slot); | |
82c03907 ILT |
460 | XDELETEVEC (out_buffer); |
461 | XDELETEVEC (copy); | |
c6a13190 ILT |
462 | } |
463 | ||
464 | /* A macro undef. */ | |
465 | ||
466 | static void | |
467 | go_undef (unsigned int lineno, const char *buffer) | |
468 | { | |
5743331e | 469 | struct macro_hash_value mhval; |
c6a13190 ILT |
470 | void **slot; |
471 | ||
472 | real_debug_hooks->undef (lineno, buffer); | |
473 | ||
5743331e ILT |
474 | mhval.name = CONST_CAST (char *, buffer); |
475 | mhval.value = NULL; | |
476 | slot = htab_find_slot (macro_hash, &mhval, NO_INSERT); | |
477 | if (slot != NULL) | |
478 | htab_clear_slot (macro_hash, slot); | |
c6a13190 ILT |
479 | } |
480 | ||
481 | /* A function or variable decl. */ | |
482 | ||
483 | static void | |
484 | go_decl (tree decl) | |
485 | { | |
486 | if (!TREE_PUBLIC (decl) | |
487 | || DECL_IS_BUILTIN (decl) | |
488 | || DECL_NAME (decl) == NULL_TREE) | |
489 | return; | |
9771b263 | 490 | vec_safe_push (queue, decl); |
c6a13190 ILT |
491 | } |
492 | ||
493 | /* A function decl. */ | |
494 | ||
495 | static void | |
496 | go_function_decl (tree decl) | |
497 | { | |
498 | real_debug_hooks->function_decl (decl); | |
499 | go_decl (decl); | |
500 | } | |
501 | ||
d7438551 AH |
502 | static void |
503 | go_early_global_decl (tree decl) | |
504 | { | |
505 | go_decl (decl); | |
ff9baa5f PMR |
506 | if (TREE_CODE (decl) != FUNCTION_DECL || DECL_STRUCT_FUNCTION (decl) != NULL) |
507 | real_debug_hooks->early_global_decl (decl); | |
d7438551 AH |
508 | } |
509 | ||
c6a13190 ILT |
510 | /* A global variable decl. */ |
511 | ||
512 | static void | |
d7438551 | 513 | go_late_global_decl (tree decl) |
c6a13190 | 514 | { |
d7438551 | 515 | real_debug_hooks->late_global_decl (decl); |
c6a13190 ILT |
516 | } |
517 | ||
518 | /* A type declaration. */ | |
519 | ||
520 | static void | |
521 | go_type_decl (tree decl, int local) | |
522 | { | |
523 | real_debug_hooks->type_decl (decl, local); | |
524 | ||
525 | if (local || DECL_IS_BUILTIN (decl)) | |
526 | return; | |
527 | if (DECL_NAME (decl) == NULL_TREE | |
528 | && (TYPE_NAME (TREE_TYPE (decl)) == NULL_TREE | |
529 | || TREE_CODE (TYPE_NAME (TREE_TYPE (decl))) != IDENTIFIER_NODE) | |
530 | && TREE_CODE (TREE_TYPE (decl)) != ENUMERAL_TYPE) | |
531 | return; | |
9771b263 | 532 | vec_safe_push (queue, decl); |
c6a13190 ILT |
533 | } |
534 | ||
535 | /* A container for the data we pass around when generating information | |
536 | at the end of the compilation. */ | |
537 | ||
6c1dae73 | 538 | class godump_container |
c6a13190 | 539 | { |
6c1dae73 | 540 | public: |
c6a13190 | 541 | /* DECLs that we have already seen. */ |
6e2830c3 | 542 | hash_set<tree> decls_seen; |
c6a13190 ILT |
543 | |
544 | /* Types which may potentially have to be defined as dummy | |
545 | types. */ | |
6e2830c3 | 546 | hash_set<const char *> pot_dummy_types; |
c6a13190 ILT |
547 | |
548 | /* Go keywords. */ | |
549 | htab_t keyword_hash; | |
550 | ||
551 | /* Global type definitions. */ | |
552 | htab_t type_hash; | |
553 | ||
f17333e3 ILT |
554 | /* Invalid types. */ |
555 | htab_t invalid_hash; | |
556 | ||
c6a13190 ILT |
557 | /* Obstack used to write out a type definition. */ |
558 | struct obstack type_obstack; | |
559 | }; | |
560 | ||
561 | /* Append an IDENTIFIER_NODE to OB. */ | |
562 | ||
563 | static void | |
564 | go_append_string (struct obstack *ob, tree id) | |
565 | { | |
566 | obstack_grow (ob, IDENTIFIER_POINTER (id), IDENTIFIER_LENGTH (id)); | |
567 | } | |
568 | ||
4bbed9ce DV |
569 | /* Given an integer PRECISION in bits, returns a constant string that is the |
570 | matching go int or uint type (depending on the IS_UNSIGNED flag). Returns a | |
571 | NULL pointer if there is no matching go type. */ | |
572 | ||
573 | static const char * | |
574 | go_get_uinttype_for_precision (unsigned int precision, bool is_unsigned) | |
575 | { | |
576 | switch (precision) | |
577 | { | |
578 | case 8: | |
579 | return is_unsigned ? "uint8" : "int8"; | |
580 | case 16: | |
581 | return is_unsigned ? "uint16" : "int16"; | |
582 | case 32: | |
583 | return is_unsigned ? "uint32" : "int32"; | |
584 | case 64: | |
585 | return is_unsigned ? "uint64" : "int64"; | |
586 | default: | |
587 | return NULL; | |
588 | } | |
589 | } | |
590 | ||
591 | /* Append an artificial variable name with the suffix _INDEX to OB. Returns | |
592 | INDEX + 1. */ | |
593 | ||
594 | static unsigned int | |
595 | go_append_artificial_name (struct obstack *ob, unsigned int index) | |
596 | { | |
597 | char buf[100]; | |
598 | ||
599 | /* FIXME: identifier may not be unique. */ | |
600 | obstack_grow (ob, "Godump_", 7); | |
601 | snprintf (buf, sizeof buf, "%u", index); | |
602 | obstack_grow (ob, buf, strlen (buf)); | |
603 | ||
604 | return index + 1; | |
605 | } | |
606 | ||
607 | /* Append the variable name from DECL to OB. If the name is in the | |
608 | KEYWORD_HASH, prepend an '_'. */ | |
609 | ||
610 | static void | |
611 | go_append_decl_name (struct obstack *ob, tree decl, htab_t keyword_hash) | |
612 | { | |
613 | const char *var_name; | |
614 | void **slot; | |
615 | ||
616 | /* Start variable name with an underscore if a keyword. */ | |
617 | var_name = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
618 | slot = htab_find_slot (keyword_hash, var_name, NO_INSERT); | |
619 | if (slot != NULL) | |
620 | obstack_1grow (ob, '_'); | |
621 | go_append_string (ob, DECL_NAME (decl)); | |
622 | } | |
623 | ||
624 | /* Appends a byte array with the necessary number of elements and the name | |
625 | "Godump_INDEX_pad" to pad from FROM_OFFSET to TO_OFFSET to OB assuming that | |
626 | the next field is automatically aligned to ALIGN_UNITS. Returns INDEX + 1, | |
627 | or INDEX if no padding had to be appended. The resulting offset where the | |
628 | next field is allocated is returned through RET_OFFSET. */ | |
629 | ||
630 | static unsigned int | |
631 | go_append_padding (struct obstack *ob, unsigned int from_offset, | |
632 | unsigned int to_offset, unsigned int align_units, | |
633 | unsigned int index, unsigned int *ret_offset) | |
634 | { | |
635 | if (from_offset % align_units > 0) | |
636 | from_offset += align_units - (from_offset % align_units); | |
637 | gcc_assert (to_offset >= from_offset); | |
638 | if (to_offset > from_offset) | |
639 | { | |
640 | char buf[100]; | |
641 | ||
642 | index = go_append_artificial_name (ob, index); | |
643 | snprintf (buf, sizeof buf, "_pad [%u]byte; ", to_offset - from_offset); | |
644 | obstack_grow (ob, buf, strlen (buf)); | |
645 | } | |
646 | *ret_offset = to_offset; | |
647 | ||
648 | return index; | |
649 | } | |
650 | ||
651 | /* Appends an array of type TYPE_STRING with zero elements and the name | |
652 | "Godump_INDEX_align" to OB. If TYPE_STRING is a null pointer, ERROR_STRING | |
653 | is appended instead of the type. Returns INDEX + 1. */ | |
654 | ||
655 | static unsigned int | |
656 | go_force_record_alignment (struct obstack *ob, const char *type_string, | |
657 | unsigned int index, const char *error_string) | |
658 | { | |
659 | index = go_append_artificial_name (ob, index); | |
660 | obstack_grow (ob, "_align ", 7); | |
661 | if (type_string == NULL) | |
662 | obstack_grow (ob, error_string, strlen (error_string)); | |
663 | else | |
664 | { | |
665 | obstack_grow (ob, "[0]", 3); | |
666 | obstack_grow (ob, type_string, strlen (type_string)); | |
667 | } | |
668 | obstack_grow (ob, "; ", 2); | |
669 | ||
670 | return index; | |
671 | } | |
672 | ||
c6a13190 ILT |
673 | /* Write the Go version of TYPE to CONTAINER->TYPE_OBSTACK. |
674 | USE_TYPE_NAME is true if we can simply use a type name here without | |
675 | needing to define it. IS_FUNC_OK is true if we can output a func | |
4bbed9ce DV |
676 | type here; the "func" keyword will already have been added. |
677 | Return true if the type can be represented in Go, false otherwise. | |
678 | P_ART_I is used for indexing artificial elements in nested structures and | |
679 | should always be a NULL pointer when called, except by certain recursive | |
680 | calls from go_format_type() itself. */ | |
c6a13190 ILT |
681 | |
682 | static bool | |
99b1c316 | 683 | go_format_type (class godump_container *container, tree type, |
57ab0915 DV |
684 | bool use_type_name, bool is_func_ok, unsigned int *p_art_i, |
685 | bool is_anon_record_or_union) | |
c6a13190 ILT |
686 | { |
687 | bool ret; | |
688 | struct obstack *ob; | |
4bbed9ce | 689 | unsigned int art_i_dummy; |
57ab0915 | 690 | bool is_union = false; |
c6a13190 | 691 | |
4bbed9ce DV |
692 | if (p_art_i == NULL) |
693 | { | |
694 | art_i_dummy = 0; | |
695 | p_art_i = &art_i_dummy; | |
696 | } | |
c6a13190 ILT |
697 | ret = true; |
698 | ob = &container->type_obstack; | |
699 | ||
700 | if (TYPE_NAME (type) != NULL_TREE | |
6e2830c3 TS |
701 | && (container->decls_seen.contains (type) |
702 | || container->decls_seen.contains (TYPE_NAME (type))) | |
c6a13190 ILT |
703 | && (AGGREGATE_TYPE_P (type) |
704 | || POINTER_TYPE_P (type) | |
705 | || TREE_CODE (type) == FUNCTION_TYPE)) | |
706 | { | |
707 | tree name; | |
f17333e3 | 708 | void **slot; |
c6a13190 | 709 | |
9dba4b55 | 710 | name = TYPE_IDENTIFIER (type); |
f17333e3 ILT |
711 | |
712 | slot = htab_find_slot (container->invalid_hash, IDENTIFIER_POINTER (name), | |
713 | NO_INSERT); | |
714 | if (slot != NULL) | |
715 | ret = false; | |
716 | ||
717 | obstack_1grow (ob, '_'); | |
718 | go_append_string (ob, name); | |
719 | return ret; | |
c6a13190 ILT |
720 | } |
721 | ||
6e2830c3 | 722 | container->decls_seen.add (type); |
c6a13190 ILT |
723 | |
724 | switch (TREE_CODE (type)) | |
725 | { | |
c6a13190 | 726 | case TYPE_DECL: |
dbbc4d4c ILT |
727 | { |
728 | void **slot; | |
729 | ||
730 | slot = htab_find_slot (container->invalid_hash, | |
731 | IDENTIFIER_POINTER (DECL_NAME (type)), | |
732 | NO_INSERT); | |
733 | if (slot != NULL) | |
734 | ret = false; | |
735 | ||
736 | obstack_1grow (ob, '_'); | |
737 | go_append_string (ob, DECL_NAME (type)); | |
738 | } | |
c6a13190 ILT |
739 | break; |
740 | ||
e4d02f52 | 741 | case ENUMERAL_TYPE: |
c6a13190 ILT |
742 | case INTEGER_TYPE: |
743 | { | |
744 | const char *s; | |
745 | char buf[100]; | |
746 | ||
4bbed9ce DV |
747 | s = go_get_uinttype_for_precision (TYPE_PRECISION (type), |
748 | TYPE_UNSIGNED (type)); | |
749 | if (s == NULL) | |
c6a13190 | 750 | { |
c6a13190 ILT |
751 | snprintf (buf, sizeof buf, "INVALID-int-%u%s", |
752 | TYPE_PRECISION (type), | |
753 | TYPE_UNSIGNED (type) ? "u" : ""); | |
754 | s = buf; | |
755 | ret = false; | |
c6a13190 ILT |
756 | } |
757 | obstack_grow (ob, s, strlen (s)); | |
758 | } | |
759 | break; | |
760 | ||
761 | case REAL_TYPE: | |
762 | { | |
763 | const char *s; | |
764 | char buf[100]; | |
765 | ||
766 | switch (TYPE_PRECISION (type)) | |
767 | { | |
768 | case 32: | |
769 | s = "float32"; | |
770 | break; | |
771 | case 64: | |
772 | s = "float64"; | |
773 | break; | |
c6a13190 ILT |
774 | default: |
775 | snprintf (buf, sizeof buf, "INVALID-float-%u", | |
776 | TYPE_PRECISION (type)); | |
777 | s = buf; | |
778 | ret = false; | |
779 | break; | |
780 | } | |
781 | obstack_grow (ob, s, strlen (s)); | |
782 | } | |
783 | break; | |
784 | ||
7b310e90 DV |
785 | case COMPLEX_TYPE: |
786 | { | |
787 | const char *s; | |
788 | char buf[100]; | |
789 | tree real_type; | |
790 | ||
791 | real_type = TREE_TYPE (type); | |
792 | if (TREE_CODE (real_type) == REAL_TYPE) | |
793 | { | |
794 | switch (TYPE_PRECISION (real_type)) | |
795 | { | |
796 | case 32: | |
797 | s = "complex64"; | |
798 | break; | |
799 | case 64: | |
800 | s = "complex128"; | |
801 | break; | |
802 | default: | |
803 | snprintf (buf, sizeof buf, "INVALID-complex-%u", | |
804 | 2 * TYPE_PRECISION (real_type)); | |
805 | s = buf; | |
806 | ret = false; | |
807 | break; | |
808 | } | |
809 | } | |
810 | else | |
811 | { | |
812 | s = "INVALID-complex-non-real"; | |
813 | ret = false; | |
814 | } | |
815 | obstack_grow (ob, s, strlen (s)); | |
816 | } | |
817 | break; | |
818 | ||
c6a13190 ILT |
819 | case BOOLEAN_TYPE: |
820 | obstack_grow (ob, "bool", 4); | |
821 | break; | |
822 | ||
823 | case POINTER_TYPE: | |
824 | if (use_type_name | |
825 | && TYPE_NAME (TREE_TYPE (type)) != NULL_TREE | |
826 | && (RECORD_OR_UNION_TYPE_P (TREE_TYPE (type)) | |
827 | || (POINTER_TYPE_P (TREE_TYPE (type)) | |
828 | && (TREE_CODE (TREE_TYPE (TREE_TYPE (type))) | |
829 | == FUNCTION_TYPE)))) | |
830 | { | |
831 | tree name; | |
dbbc4d4c | 832 | void **slot; |
c6a13190 | 833 | |
9dba4b55 | 834 | name = TYPE_IDENTIFIER (TREE_TYPE (type)); |
c6a13190 | 835 | |
dbbc4d4c ILT |
836 | slot = htab_find_slot (container->invalid_hash, |
837 | IDENTIFIER_POINTER (name), NO_INSERT); | |
838 | if (slot != NULL) | |
839 | ret = false; | |
c6a13190 | 840 | |
dbbc4d4c ILT |
841 | obstack_grow (ob, "*_", 2); |
842 | go_append_string (ob, name); | |
843 | ||
844 | /* The pointer here can be used without the struct or union | |
845 | definition. So this struct or union is a potential dummy | |
846 | type. */ | |
847 | if (RECORD_OR_UNION_TYPE_P (TREE_TYPE (type))) | |
6e2830c3 | 848 | container->pot_dummy_types.add (IDENTIFIER_POINTER (name)); |
dbbc4d4c ILT |
849 | |
850 | return ret; | |
c6a13190 ILT |
851 | } |
852 | if (TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) | |
853 | obstack_grow (ob, "func", 4); | |
854 | else | |
855 | obstack_1grow (ob, '*'); | |
856 | if (VOID_TYPE_P (TREE_TYPE (type))) | |
857 | obstack_grow (ob, "byte", 4); | |
858 | else | |
859 | { | |
860 | if (!go_format_type (container, TREE_TYPE (type), use_type_name, | |
57ab0915 | 861 | true, NULL, false)) |
c6a13190 ILT |
862 | ret = false; |
863 | } | |
864 | break; | |
865 | ||
866 | case ARRAY_TYPE: | |
867 | obstack_1grow (ob, '['); | |
868 | if (TYPE_DOMAIN (type) != NULL_TREE | |
869 | && TREE_CODE (TYPE_DOMAIN (type)) == INTEGER_TYPE | |
870 | && TYPE_MIN_VALUE (TYPE_DOMAIN (type)) != NULL_TREE | |
871 | && TREE_CODE (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST | |
872 | && tree_int_cst_sgn (TYPE_MIN_VALUE (TYPE_DOMAIN (type))) == 0 | |
873 | && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != NULL_TREE | |
874 | && TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (type))) == INTEGER_CST | |
9541ffee | 875 | && tree_fits_shwi_p (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))) |
c6a13190 ILT |
876 | { |
877 | char buf[100]; | |
878 | ||
879 | snprintf (buf, sizeof buf, HOST_WIDE_INT_PRINT_DEC "+1", | |
9439e9a1 | 880 | tree_to_shwi (TYPE_MAX_VALUE (TYPE_DOMAIN (type)))); |
c6a13190 ILT |
881 | obstack_grow (ob, buf, strlen (buf)); |
882 | } | |
4bbed9ce DV |
883 | else |
884 | obstack_1grow (ob, '0'); | |
c6a13190 | 885 | obstack_1grow (ob, ']'); |
4bbed9ce | 886 | if (!go_format_type (container, TREE_TYPE (type), use_type_name, false, |
57ab0915 | 887 | NULL, false)) |
c6a13190 ILT |
888 | ret = false; |
889 | break; | |
890 | ||
57ab0915 DV |
891 | case UNION_TYPE: |
892 | is_union = true; | |
893 | /* Fall through to RECORD_TYPE case. */ | |
81fea426 | 894 | gcc_fallthrough (); |
c6a13190 ILT |
895 | case RECORD_TYPE: |
896 | { | |
4bbed9ce | 897 | unsigned int prev_field_end; |
57ab0915 | 898 | unsigned int known_alignment; |
c6a13190 | 899 | tree field; |
57ab0915 | 900 | bool emitted_a_field; |
c6a13190 | 901 | |
4bbed9ce DV |
902 | /* FIXME: Why is this necessary? Without it we can get a core |
903 | dump on the s390x headers, or from a file containing simply | |
904 | "typedef struct S T;". */ | |
905 | layout_type (type); | |
906 | ||
907 | prev_field_end = 0; | |
57ab0915 DV |
908 | known_alignment = 1; |
909 | /* Anonymous records and unions are flattened, i.e. they are not put | |
910 | into "struct { ... }". */ | |
911 | if (!is_anon_record_or_union) | |
912 | obstack_grow (ob, "struct { ", 9); | |
913 | for (field = TYPE_FIELDS (type), emitted_a_field = false; | |
c6a13190 ILT |
914 | field != NULL_TREE; |
915 | field = TREE_CHAIN (field)) | |
916 | { | |
4bbed9ce DV |
917 | if (TREE_CODE (field) != FIELD_DECL) |
918 | continue; | |
c6a13190 | 919 | if (DECL_BIT_FIELD (field)) |
57ab0915 | 920 | /* Bit fields are replaced by padding. */ |
4bbed9ce | 921 | continue; |
57ab0915 DV |
922 | /* Only the first non-bitfield field is emitted for unions. */ |
923 | if (!is_union || !emitted_a_field) | |
924 | { | |
925 | /* Emit the field. */ | |
926 | bool field_ok; | |
927 | bool is_anon_substructure; | |
928 | unsigned int decl_align_unit; | |
929 | unsigned int decl_offset; | |
930 | ||
931 | field_ok = true; | |
932 | emitted_a_field = true; | |
933 | is_anon_substructure = | |
934 | (DECL_NAME (field) == NULL | |
935 | && (TREE_CODE (TREE_TYPE (field)) == RECORD_TYPE | |
936 | || TREE_CODE (TREE_TYPE (field)) == UNION_TYPE)); | |
937 | /* Keep track of the alignment of named substructures, either | |
938 | of the whole record, or the alignment of the emitted field | |
939 | (for unions). */ | |
940 | decl_align_unit = DECL_ALIGN_UNIT (field); | |
941 | if (!is_anon_substructure && decl_align_unit > known_alignment) | |
942 | known_alignment = decl_align_unit; | |
943 | /* Pad to start of field. */ | |
944 | decl_offset = | |
945 | TREE_INT_CST_LOW (DECL_FIELD_OFFSET (field)) | |
946 | + precision_to_units | |
947 | (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))); | |
4bbed9ce | 948 | { |
57ab0915 DV |
949 | unsigned int align_unit; |
950 | ||
951 | /* For anonymous records and unions there is no automatic | |
952 | structure alignment, so use 1 as the alignment. */ | |
953 | align_unit = (is_anon_substructure) ? 1 : decl_align_unit; | |
4bbed9ce | 954 | *p_art_i = go_append_padding |
57ab0915 | 955 | (ob, prev_field_end, decl_offset, align_unit, *p_art_i, |
4bbed9ce | 956 | &prev_field_end); |
4bbed9ce | 957 | } |
57ab0915 DV |
958 | if (DECL_SIZE_UNIT (field)) |
959 | prev_field_end += | |
960 | TREE_INT_CST_LOW (DECL_SIZE_UNIT (field)); | |
961 | /* Emit the field name, but not for anonymous records and | |
962 | unions. */ | |
963 | if (!is_anon_substructure) | |
964 | { | |
5433e401 | 965 | if (DECL_NAME (field) == NULL) |
57ab0915 DV |
966 | *p_art_i = go_append_artificial_name (ob, *p_art_i); |
967 | else | |
968 | go_append_decl_name | |
969 | (ob, field, container->keyword_hash); | |
970 | obstack_1grow (ob, ' '); | |
971 | } | |
972 | /* Do not expand type if a record or union type or a function | |
973 | pointer. */ | |
c6a13190 ILT |
974 | if (TYPE_NAME (TREE_TYPE (field)) != NULL_TREE |
975 | && (RECORD_OR_UNION_TYPE_P (TREE_TYPE (field)) | |
976 | || (POINTER_TYPE_P (TREE_TYPE (field)) | |
977 | && (TREE_CODE (TREE_TYPE (TREE_TYPE (field))) | |
57ab0915 | 978 | == FUNCTION_TYPE)))) |
c6a13190 | 979 | { |
dbbc4d4c ILT |
980 | tree name; |
981 | void **slot; | |
982 | ||
9dba4b55 | 983 | name = TYPE_IDENTIFIER (TREE_TYPE (field)); |
dbbc4d4c ILT |
984 | |
985 | slot = htab_find_slot (container->invalid_hash, | |
986 | IDENTIFIER_POINTER (name), | |
987 | NO_INSERT); | |
988 | if (slot != NULL) | |
53febcba | 989 | field_ok = false; |
dbbc4d4c ILT |
990 | |
991 | obstack_1grow (ob, '_'); | |
992 | go_append_string (ob, name); | |
c6a13190 ILT |
993 | } |
994 | else | |
995 | { | |
996 | if (!go_format_type (container, TREE_TYPE (field), true, | |
57ab0915 | 997 | false, p_art_i, is_anon_substructure)) |
53febcba | 998 | field_ok = false; |
c6a13190 | 999 | } |
57ab0915 DV |
1000 | if (!is_anon_substructure) |
1001 | obstack_grow (ob, "; ", 2); | |
1002 | if (!field_ok) | |
1003 | ret = false; | |
1004 | } | |
4bbed9ce | 1005 | } |
57ab0915 | 1006 | /* Padding. */ |
fca7c764 ILT |
1007 | *p_art_i = go_append_padding (ob, prev_field_end, |
1008 | TREE_INT_CST_LOW (TYPE_SIZE_UNIT (type)), | |
1009 | 1, *p_art_i, &prev_field_end); | |
57ab0915 DV |
1010 | /* Alignment. */ |
1011 | if (!is_anon_record_or_union | |
1012 | && known_alignment < TYPE_ALIGN_UNIT (type)) | |
4bbed9ce DV |
1013 | { |
1014 | const char *s; | |
1015 | char buf[100]; | |
c6a13190 | 1016 | |
4bbed9ce DV |
1017 | /* Enforce proper record alignment. */ |
1018 | s = go_get_uinttype_for_precision | |
1019 | (TYPE_ALIGN (type), TYPE_UNSIGNED (type)); | |
1020 | if (s == NULL) | |
53febcba | 1021 | { |
4bbed9ce DV |
1022 | snprintf (buf, sizeof buf, "INVALID-int-%u%s", |
1023 | TYPE_ALIGN (type), TYPE_UNSIGNED (type) ? "u" : ""); | |
1024 | s = buf; | |
1025 | ret = false; | |
53febcba | 1026 | } |
4bbed9ce DV |
1027 | *p_art_i = go_force_record_alignment (ob, s, *p_art_i, buf); |
1028 | } | |
57ab0915 DV |
1029 | if (!is_anon_record_or_union) |
1030 | obstack_1grow (ob, '}'); | |
4bbed9ce | 1031 | } |
57ab0915 | 1032 | break; |
c6a13190 ILT |
1033 | |
1034 | case FUNCTION_TYPE: | |
1035 | { | |
bce33ab2 | 1036 | tree arg_type; |
c6a13190 ILT |
1037 | bool is_varargs; |
1038 | tree result; | |
bce33ab2 NF |
1039 | function_args_iterator iter; |
1040 | bool seen_arg; | |
c6a13190 ILT |
1041 | |
1042 | /* Go has no way to write a type which is a function but not a | |
1043 | pointer to a function. */ | |
1044 | if (!is_func_ok) | |
1045 | { | |
1046 | obstack_grow (ob, "func*", 5); | |
1047 | ret = false; | |
1048 | } | |
1049 | ||
1050 | obstack_1grow (ob, '('); | |
bce33ab2 NF |
1051 | is_varargs = stdarg_p (type); |
1052 | seen_arg = false; | |
1053 | FOREACH_FUNCTION_ARGS (type, arg_type, iter) | |
c6a13190 | 1054 | { |
bce33ab2 NF |
1055 | if (VOID_TYPE_P (arg_type)) |
1056 | break; | |
1057 | if (seen_arg) | |
c6a13190 | 1058 | obstack_grow (ob, ", ", 2); |
57ab0915 | 1059 | if (!go_format_type (container, arg_type, true, false, NULL, false)) |
c6a13190 | 1060 | ret = false; |
bce33ab2 | 1061 | seen_arg = true; |
c6a13190 ILT |
1062 | } |
1063 | if (is_varargs) | |
1064 | { | |
bce33ab2 | 1065 | if (prototype_p (type)) |
c6a13190 ILT |
1066 | obstack_grow (ob, ", ", 2); |
1067 | obstack_grow (ob, "...interface{}", 14); | |
1068 | } | |
1069 | obstack_1grow (ob, ')'); | |
1070 | ||
1071 | result = TREE_TYPE (type); | |
1072 | if (!VOID_TYPE_P (result)) | |
1073 | { | |
1074 | obstack_1grow (ob, ' '); | |
57ab0915 DV |
1075 | if (!go_format_type (container, result, use_type_name, false, NULL, |
1076 | false)) | |
c6a13190 ILT |
1077 | ret = false; |
1078 | } | |
1079 | } | |
1080 | break; | |
1081 | ||
1082 | default: | |
1083 | obstack_grow (ob, "INVALID-type", 12); | |
1084 | ret = false; | |
1085 | break; | |
1086 | } | |
1087 | ||
1088 | return ret; | |
1089 | } | |
1090 | ||
1091 | /* Output the type which was built on the type obstack, and then free | |
1092 | it. */ | |
1093 | ||
1094 | static void | |
99b1c316 | 1095 | go_output_type (class godump_container *container) |
c6a13190 ILT |
1096 | { |
1097 | struct obstack *ob; | |
1098 | ||
1099 | ob = &container->type_obstack; | |
1100 | obstack_1grow (ob, '\0'); | |
19a9ba64 | 1101 | fputs ((char *) obstack_base (ob), go_dump_file); |
c6a13190 ILT |
1102 | obstack_free (ob, obstack_base (ob)); |
1103 | } | |
1104 | ||
1105 | /* Output a function declaration. */ | |
1106 | ||
1107 | static void | |
99b1c316 | 1108 | go_output_fndecl (class godump_container *container, tree decl) |
c6a13190 | 1109 | { |
57ab0915 | 1110 | if (!go_format_type (container, TREE_TYPE (decl), false, true, NULL, false)) |
c6a13190 ILT |
1111 | fprintf (go_dump_file, "// "); |
1112 | fprintf (go_dump_file, "func _%s ", | |
1113 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
1114 | go_output_type (container); | |
1115 | fprintf (go_dump_file, " __asm__(\"%s\")\n", | |
1116 | IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl))); | |
1117 | } | |
1118 | ||
1119 | /* Output a typedef or something like a struct definition. */ | |
1120 | ||
1121 | static void | |
99b1c316 | 1122 | go_output_typedef (class godump_container *container, tree decl) |
c6a13190 ILT |
1123 | { |
1124 | /* If we have an enum type, output the enum constants | |
1125 | separately. */ | |
1126 | if (TREE_CODE (TREE_TYPE (decl)) == ENUMERAL_TYPE | |
1127 | && TYPE_SIZE (TREE_TYPE (decl)) != 0 | |
6e2830c3 | 1128 | && !container->decls_seen.contains (TREE_TYPE (decl)) |
c6a13190 | 1129 | && (TYPE_CANONICAL (TREE_TYPE (decl)) == NULL_TREE |
6e2830c3 TS |
1130 | || !container->decls_seen.contains |
1131 | (TYPE_CANONICAL (TREE_TYPE (decl))))) | |
c6a13190 ILT |
1132 | { |
1133 | tree element; | |
1134 | ||
1135 | for (element = TYPE_VALUES (TREE_TYPE (decl)); | |
1136 | element != NULL_TREE; | |
1137 | element = TREE_CHAIN (element)) | |
c53aafdf ILT |
1138 | { |
1139 | const char *name; | |
5743331e | 1140 | struct macro_hash_value *mhval; |
c53aafdf | 1141 | void **slot; |
807e902e | 1142 | char buf[WIDE_INT_PRINT_BUFFER_SIZE]; |
c53aafdf ILT |
1143 | |
1144 | name = IDENTIFIER_POINTER (TREE_PURPOSE (element)); | |
1145 | ||
1146 | /* Sometimes a name will be defined as both an enum constant | |
1147 | and a macro. Avoid duplicate definition errors by | |
1148 | treating enum constants as macros. */ | |
5743331e ILT |
1149 | mhval = XNEW (struct macro_hash_value); |
1150 | mhval->name = xstrdup (name); | |
1151 | mhval->value = NULL; | |
1152 | slot = htab_find_slot (macro_hash, mhval, INSERT); | |
1153 | if (*slot != NULL) | |
1154 | macro_hash_del (*slot); | |
1155 | ||
9541ffee | 1156 | if (tree_fits_shwi_p (TREE_VALUE (element))) |
5743331e | 1157 | snprintf (buf, sizeof buf, HOST_WIDE_INT_PRINT_DEC, |
9439e9a1 | 1158 | tree_to_shwi (TREE_VALUE (element))); |
cc269bb6 | 1159 | else if (tree_fits_uhwi_p (TREE_VALUE (element))) |
5743331e | 1160 | snprintf (buf, sizeof buf, HOST_WIDE_INT_PRINT_UNSIGNED, |
7d362f6c | 1161 | tree_to_uhwi (TREE_VALUE (element))); |
5743331e | 1162 | else |
8e6cdc90 | 1163 | print_hex (wi::to_wide (element), buf); |
5743331e ILT |
1164 | |
1165 | mhval->value = xstrdup (buf); | |
1166 | *slot = mhval; | |
c53aafdf | 1167 | } |
6e2830c3 | 1168 | container->decls_seen.add (TREE_TYPE (decl)); |
c6a13190 | 1169 | if (TYPE_CANONICAL (TREE_TYPE (decl)) != NULL_TREE) |
6e2830c3 | 1170 | container->decls_seen.add (TYPE_CANONICAL (TREE_TYPE (decl))); |
c6a13190 ILT |
1171 | } |
1172 | ||
1173 | if (DECL_NAME (decl) != NULL_TREE) | |
1174 | { | |
1175 | void **slot; | |
1176 | const char *type; | |
1177 | ||
1178 | type = IDENTIFIER_POINTER (DECL_NAME (decl)); | |
1179 | /* If type defined already, skip. */ | |
1180 | slot = htab_find_slot (container->type_hash, type, INSERT); | |
1181 | if (*slot != NULL) | |
1182 | return; | |
1183 | *slot = CONST_CAST (void *, (const void *) type); | |
1184 | ||
5686a6b7 | 1185 | if (!go_format_type (container, TREE_TYPE (decl), true, false, NULL, |
57ab0915 | 1186 | false)) |
f17333e3 ILT |
1187 | { |
1188 | fprintf (go_dump_file, "// "); | |
1189 | slot = htab_find_slot (container->invalid_hash, type, INSERT); | |
1190 | *slot = CONST_CAST (void *, (const void *) type); | |
1191 | } | |
c6a13190 ILT |
1192 | fprintf (go_dump_file, "type _%s ", |
1193 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
1194 | go_output_type (container); | |
f12e8bd5 ILT |
1195 | |
1196 | if (RECORD_OR_UNION_TYPE_P (TREE_TYPE (decl))) | |
1197 | { | |
1198 | HOST_WIDE_INT size = int_size_in_bytes (TREE_TYPE (decl)); | |
1199 | ||
1200 | if (size > 0) | |
1201 | fprintf (go_dump_file, | |
1202 | "\nconst _sizeof_%s = " HOST_WIDE_INT_PRINT_DEC, | |
1203 | IDENTIFIER_POINTER (DECL_NAME (decl)), | |
1204 | size); | |
1205 | } | |
1206 | ||
6e2830c3 | 1207 | container->decls_seen.add (decl); |
c6a13190 ILT |
1208 | } |
1209 | else if (RECORD_OR_UNION_TYPE_P (TREE_TYPE (decl))) | |
1210 | { | |
1211 | void **slot; | |
1212 | const char *type; | |
f12e8bd5 | 1213 | HOST_WIDE_INT size; |
c6a13190 ILT |
1214 | |
1215 | type = IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE ((decl)))); | |
1216 | /* If type defined already, skip. */ | |
1217 | slot = htab_find_slot (container->type_hash, type, INSERT); | |
1218 | if (*slot != NULL) | |
1219 | return; | |
1220 | *slot = CONST_CAST (void *, (const void *) type); | |
1221 | ||
57ab0915 DV |
1222 | if (!go_format_type (container, TREE_TYPE (decl), false, false, NULL, |
1223 | false)) | |
f17333e3 ILT |
1224 | { |
1225 | fprintf (go_dump_file, "// "); | |
1226 | slot = htab_find_slot (container->invalid_hash, type, INSERT); | |
1227 | *slot = CONST_CAST (void *, (const void *) type); | |
1228 | } | |
c6a13190 ILT |
1229 | fprintf (go_dump_file, "type _%s ", |
1230 | IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl)))); | |
1231 | go_output_type (container); | |
f12e8bd5 ILT |
1232 | |
1233 | size = int_size_in_bytes (TREE_TYPE (decl)); | |
1234 | if (size > 0) | |
1235 | fprintf (go_dump_file, | |
1236 | "\nconst _sizeof_%s = " HOST_WIDE_INT_PRINT_DEC, | |
1237 | IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))), | |
1238 | size); | |
c6a13190 ILT |
1239 | } |
1240 | else | |
1241 | return; | |
1242 | ||
1243 | fprintf (go_dump_file, "\n"); | |
1244 | } | |
1245 | ||
1246 | /* Output a variable. */ | |
1247 | ||
1248 | static void | |
99b1c316 | 1249 | go_output_var (class godump_container *container, tree decl) |
c6a13190 | 1250 | { |
4053a5a0 | 1251 | bool is_valid; |
4bbed9ce DV |
1252 | tree type_name; |
1253 | tree id; | |
4053a5a0 | 1254 | |
6e2830c3 TS |
1255 | if (container->decls_seen.contains (decl) |
1256 | || container->decls_seen.contains (DECL_NAME (decl))) | |
c6a13190 | 1257 | return; |
6e2830c3 TS |
1258 | container->decls_seen.add (decl); |
1259 | container->decls_seen.add (DECL_NAME (decl)); | |
4053a5a0 | 1260 | |
4bbed9ce DV |
1261 | type_name = TYPE_NAME (TREE_TYPE (decl)); |
1262 | id = NULL_TREE; | |
1263 | if (type_name != NULL_TREE && TREE_CODE (type_name) == IDENTIFIER_NODE) | |
1264 | id = type_name; | |
1265 | else if (type_name != NULL_TREE && TREE_CODE (type_name) == TYPE_DECL | |
1266 | && DECL_SOURCE_LOCATION (type_name) != BUILTINS_LOCATION | |
1267 | && DECL_NAME (type_name)) | |
1268 | id = DECL_NAME (type_name); | |
1269 | if (id != NULL_TREE | |
1270 | && (!htab_find_slot (container->type_hash, IDENTIFIER_POINTER (id), | |
1271 | NO_INSERT) | |
1272 | || htab_find_slot (container->invalid_hash, IDENTIFIER_POINTER (id), | |
1273 | NO_INSERT))) | |
1274 | id = NULL_TREE; | |
1275 | if (id != NULL_TREE) | |
1276 | { | |
1277 | struct obstack *ob; | |
1278 | ||
1279 | ob = &container->type_obstack; | |
1280 | obstack_1grow (ob, '_'); | |
1281 | go_append_string (ob, id); | |
1282 | is_valid = htab_find_slot (container->type_hash, IDENTIFIER_POINTER (id), | |
1283 | NO_INSERT) != NULL; | |
1284 | } | |
1285 | else | |
57ab0915 DV |
1286 | is_valid = go_format_type (container, TREE_TYPE (decl), true, false, NULL, |
1287 | false); | |
4053a5a0 ILT |
1288 | if (is_valid |
1289 | && htab_find_slot (container->type_hash, | |
1290 | IDENTIFIER_POINTER (DECL_NAME (decl)), | |
1291 | NO_INSERT) != NULL) | |
1292 | { | |
1293 | /* There is already a type with this name, probably from a | |
1294 | struct tag. Prefer the type to the variable. */ | |
1295 | is_valid = false; | |
1296 | } | |
1297 | if (!is_valid) | |
c6a13190 | 1298 | fprintf (go_dump_file, "// "); |
4053a5a0 | 1299 | |
c6a13190 ILT |
1300 | fprintf (go_dump_file, "var _%s ", |
1301 | IDENTIFIER_POINTER (DECL_NAME (decl))); | |
1302 | go_output_type (container); | |
1303 | fprintf (go_dump_file, "\n"); | |
1304 | ||
1305 | /* Sometimes an extern variable is declared with an unknown struct | |
1306 | type. */ | |
4bbed9ce | 1307 | if (type_name != NULL_TREE && RECORD_OR_UNION_TYPE_P (TREE_TYPE (decl))) |
c6a13190 | 1308 | { |
c6a13190 | 1309 | if (TREE_CODE (type_name) == IDENTIFIER_NODE) |
6e2830c3 | 1310 | container->pot_dummy_types.add (IDENTIFIER_POINTER (type_name)); |
c6a13190 | 1311 | else if (TREE_CODE (type_name) == TYPE_DECL) |
6e2830c3 TS |
1312 | container->pot_dummy_types.add |
1313 | (IDENTIFIER_POINTER (DECL_NAME (type_name))); | |
c6a13190 ILT |
1314 | } |
1315 | } | |
1316 | ||
5743331e ILT |
1317 | /* Output the final value of a preprocessor macro or enum constant. |
1318 | This is called via htab_traverse_noresize. */ | |
1319 | ||
1320 | static int | |
1321 | go_print_macro (void **slot, void *arg ATTRIBUTE_UNUSED) | |
1322 | { | |
1323 | struct macro_hash_value *mhval = (struct macro_hash_value *) *slot; | |
1324 | fprintf (go_dump_file, "const _%s = %s\n", mhval->name, mhval->value); | |
1325 | return 1; | |
1326 | } | |
1327 | ||
c6a13190 ILT |
1328 | /* Build a hash table with the Go keywords. */ |
1329 | ||
1330 | static const char * const keywords[] = { | |
1331 | "__asm__", "break", "case", "chan", "const", "continue", "default", | |
1332 | "defer", "else", "fallthrough", "for", "func", "go", "goto", "if", | |
1333 | "import", "interface", "map", "package", "range", "return", "select", | |
1334 | "struct", "switch", "type", "var" | |
1335 | }; | |
1336 | ||
1337 | static void | |
99b1c316 | 1338 | keyword_hash_init (class godump_container *container) |
c6a13190 ILT |
1339 | { |
1340 | size_t i; | |
1341 | size_t count = sizeof (keywords) / sizeof (keywords[0]); | |
1342 | void **slot; | |
1343 | ||
1344 | for (i = 0; i < count; i++) | |
1345 | { | |
1346 | slot = htab_find_slot (container->keyword_hash, keywords[i], INSERT); | |
1347 | *slot = CONST_CAST (void *, (const void *) keywords[i]); | |
1348 | } | |
1349 | } | |
1350 | ||
1351 | /* Traversing the pot_dummy_types and seeing which types are present | |
1352 | in the global types hash table and creating dummy definitions if | |
6e2830c3 | 1353 | not found. This function is invoked by hash_set::traverse. */ |
c6a13190 | 1354 | |
6e2830c3 TS |
1355 | bool |
1356 | find_dummy_types (const char *const &ptr, godump_container *adata) | |
c6a13190 | 1357 | { |
99b1c316 | 1358 | class godump_container *data = (class godump_container *) adata; |
c6a13190 ILT |
1359 | const char *type = (const char *) ptr; |
1360 | void **slot; | |
3eb9e389 | 1361 | void **islot; |
c6a13190 ILT |
1362 | |
1363 | slot = htab_find_slot (data->type_hash, type, NO_INSERT); | |
3eb9e389 ILT |
1364 | islot = htab_find_slot (data->invalid_hash, type, NO_INSERT); |
1365 | if (slot == NULL || islot != NULL) | |
c6a13190 ILT |
1366 | fprintf (go_dump_file, "type _%s struct {}\n", type); |
1367 | return true; | |
1368 | } | |
1369 | ||
1370 | /* Output symbols. */ | |
1371 | ||
1372 | static void | |
1373 | go_finish (const char *filename) | |
1374 | { | |
99b1c316 | 1375 | class godump_container container; |
c6a13190 ILT |
1376 | unsigned int ix; |
1377 | tree decl; | |
1378 | ||
1379 | real_debug_hooks->finish (filename); | |
1380 | ||
c6a13190 ILT |
1381 | container.type_hash = htab_create (100, htab_hash_string, |
1382 | string_hash_eq, NULL); | |
f17333e3 ILT |
1383 | container.invalid_hash = htab_create (10, htab_hash_string, |
1384 | string_hash_eq, NULL); | |
c6a13190 ILT |
1385 | container.keyword_hash = htab_create (50, htab_hash_string, |
1386 | string_hash_eq, NULL); | |
1387 | obstack_init (&container.type_obstack); | |
1388 | ||
1389 | keyword_hash_init (&container); | |
1390 | ||
9771b263 | 1391 | FOR_EACH_VEC_SAFE_ELT (queue, ix, decl) |
c6a13190 ILT |
1392 | { |
1393 | switch (TREE_CODE (decl)) | |
1394 | { | |
1395 | case FUNCTION_DECL: | |
1396 | go_output_fndecl (&container, decl); | |
1397 | break; | |
1398 | ||
1399 | case TYPE_DECL: | |
1400 | go_output_typedef (&container, decl); | |
1401 | break; | |
1402 | ||
1403 | case VAR_DECL: | |
1404 | go_output_var (&container, decl); | |
1405 | break; | |
1406 | ||
1407 | default: | |
c3284718 | 1408 | gcc_unreachable (); |
c6a13190 ILT |
1409 | } |
1410 | } | |
1411 | ||
5743331e ILT |
1412 | htab_traverse_noresize (macro_hash, go_print_macro, NULL); |
1413 | ||
c6a13190 | 1414 | /* To emit dummy definitions. */ |
6e2830c3 TS |
1415 | container.pot_dummy_types.traverse<godump_container *, find_dummy_types> |
1416 | (&container); | |
c6a13190 | 1417 | |
c6a13190 | 1418 | htab_delete (container.type_hash); |
f17333e3 | 1419 | htab_delete (container.invalid_hash); |
c6a13190 ILT |
1420 | htab_delete (container.keyword_hash); |
1421 | obstack_free (&container.type_obstack, NULL); | |
1422 | ||
9771b263 | 1423 | vec_free (queue); |
c6a13190 ILT |
1424 | |
1425 | if (fclose (go_dump_file) != 0) | |
1426 | error ("could not close Go dump file: %m"); | |
1427 | go_dump_file = NULL; | |
1428 | } | |
1429 | ||
1430 | /* Set up our hooks. */ | |
1431 | ||
1432 | const struct gcc_debug_hooks * | |
1433 | dump_go_spec_init (const char *filename, const struct gcc_debug_hooks *hooks) | |
1434 | { | |
1435 | go_dump_file = fopen (filename, "w"); | |
1436 | if (go_dump_file == NULL) | |
1437 | { | |
1438 | error ("could not open Go dump file %qs: %m", filename); | |
1439 | return hooks; | |
1440 | } | |
1441 | ||
1442 | go_debug_hooks = *hooks; | |
1443 | real_debug_hooks = hooks; | |
1444 | ||
1445 | go_debug_hooks.finish = go_finish; | |
1446 | go_debug_hooks.define = go_define; | |
1447 | go_debug_hooks.undef = go_undef; | |
1448 | go_debug_hooks.function_decl = go_function_decl; | |
d7438551 AH |
1449 | go_debug_hooks.early_global_decl = go_early_global_decl; |
1450 | go_debug_hooks.late_global_decl = go_late_global_decl; | |
c6a13190 ILT |
1451 | go_debug_hooks.type_decl = go_type_decl; |
1452 | ||
5743331e ILT |
1453 | macro_hash = htab_create (100, macro_hash_hashval, macro_hash_eq, |
1454 | macro_hash_del); | |
c6a13190 ILT |
1455 | |
1456 | return &go_debug_hooks; | |
1457 | } | |
1458 | ||
1459 | #include "gt-godump.h" |