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This was approved for 3.4 BIB branch. But since it is dead now, I am putting
[official-gcc.git] / gcc / gengtype.c
blob855e5edfe960d0fb75c430c2e172fbe9e9a4f96b
1 /* Process source files and output type information.
2 Copyright (C) 2002 Free Software Foundation, Inc.
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 2, 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 COPYING. If not, write to the Free
18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
19 02111-1307, USA. */
20
21 #include "bconfig.h"
22 #include "system.h"
23 #include "coretypes.h"
24 #include "tm.h"
25 #include "gengtype.h"
26 #include "gtyp-gen.h"
27
28 /* Nonzero iff an error has occurred. */
29 static int hit_error = 0;
30
31 static void gen_rtx_next PARAMS ((void));
32 static void write_rtx_next PARAMS ((void));
33 static void open_base_files PARAMS ((void));
34 static void close_output_files PARAMS ((void));
35
36 /* Report an error at POS, printing MSG. */
37
38 void
39 error_at_line VPARAMS ((struct fileloc *pos, const char *msg, ...))
40 {
41 VA_OPEN (ap, msg);
42 VA_FIXEDARG (ap, struct fileloc *, pos);
43 VA_FIXEDARG (ap, const char *, msg);
44
45 fprintf (stderr, "%s:%d: ", pos->file, pos->line);
46 vfprintf (stderr, msg, ap);
47 fputc ('\n', stderr);
48 hit_error = 1;
49
50 VA_CLOSE (ap);
51 }
52
53 /* vasprintf, but produces fatal message on out-of-memory. */
54 int
55 xvasprintf (result, format, args)
56 char ** result;
57 const char *format;
58 va_list args;
59 {
60 int ret = vasprintf (result, format, args);
61 if (*result == NULL || ret < 0)
62 {
63 fputs ("gengtype: out of memory", stderr);
64 xexit (1);
65 }
66 return ret;
67 }
68
69 /* Wrapper for xvasprintf. */
70 char *
71 xasprintf VPARAMS ((const char *format, ...))
72 {
73 char *result;
74 VA_OPEN (ap, format);
75 VA_FIXEDARG (ap, const char *, format);
76 xvasprintf (&result, format, ap);
77 VA_CLOSE (ap);
78 return result;
79 }
80
81 /* The one and only TYPE_STRING. */
82
83 struct type string_type = {
84 TYPE_STRING, NULL, NULL, GC_USED
85 UNION_INIT_ZERO
86 };
87
88 /* Lists of various things. */
89
90 static pair_p typedefs;
91 static type_p structures;
92 static type_p param_structs;
93 static pair_p variables;
94
95 static void do_scalar_typedef PARAMS ((const char *, struct fileloc *));
96 static type_p find_param_structure
97 PARAMS ((type_p t, type_p param[NUM_PARAM]));
98 static type_p adjust_field_tree_exp PARAMS ((type_p t, options_p opt));
99 static type_p adjust_field_rtx_def PARAMS ((type_p t, options_p opt));
100
101 /* Define S as a typedef to T at POS. */
102
103 void
104 do_typedef (s, t, pos)
105 const char *s;
106 type_p t;
107 struct fileloc *pos;
108 {
109 pair_p p;
110
111 for (p = typedefs; p != NULL; p = p->next)
112 if (strcmp (p->name, s) == 0)
113 {
114 if (p->type != t)
115 {
116 error_at_line (pos, "type `%s' previously defined", s);
117 error_at_line (&p->line, "previously defined here");
118 }
119 return;
120 }
121
122 p = xmalloc (sizeof (struct pair));
123 p->next = typedefs;
124 p->name = s;
125 p->type = t;
126 p->line = *pos;
127 typedefs = p;
128 }
129
130 /* Define S as a typename of a scalar. */
131
132 static void
133 do_scalar_typedef (s, pos)
134 const char *s;
135 struct fileloc *pos;
136 {
137 do_typedef (s, create_scalar_type (s, strlen (s)), pos);
138 }
139
140 /* Return the type previously defined for S. Use POS to report errors. */
141
142 type_p
143 resolve_typedef (s, pos)
144 const char *s;
145 struct fileloc *pos;
146 {
147 pair_p p;
148 for (p = typedefs; p != NULL; p = p->next)
149 if (strcmp (p->name, s) == 0)
150 return p->type;
151 error_at_line (pos, "unidentified type `%s'", s);
152 return create_scalar_type ("char", 4);
153 }
154
155 /* Create a new structure with tag NAME (or a union iff ISUNION is nonzero),
156 at POS with fields FIELDS and options O. */
157
158 void
159 new_structure (name, isunion, pos, fields, o)
160 const char *name;
161 int isunion;
162 struct fileloc *pos;
163 pair_p fields;
164 options_p o;
165 {
166 type_p si;
167 type_p s = NULL;
168 lang_bitmap bitmap = get_base_file_bitmap (pos->file);
169
170 for (si = structures; si != NULL; si = si->next)
171 if (strcmp (name, si->u.s.tag) == 0
172 && UNION_P (si) == isunion)
173 {
174 type_p ls = NULL;
175 if (si->kind == TYPE_LANG_STRUCT)
176 {
177 ls = si;
178
179 for (si = ls->u.s.lang_struct; si != NULL; si = si->next)
180 if (si->u.s.bitmap == bitmap)
181 s = si;
182 }
183 else if (si->u.s.line.file != NULL && si->u.s.bitmap != bitmap)
184 {
185 ls = si;
186 si = xcalloc (1, sizeof (struct type));
187 memcpy (si, ls, sizeof (struct type));
188 ls->kind = TYPE_LANG_STRUCT;
189 ls->u.s.lang_struct = si;
190 ls->u.s.fields = NULL;
191 si->next = NULL;
192 si->pointer_to = NULL;
193 si->u.s.lang_struct = ls;
194 }
195 else
196 s = si;
197
198 if (ls != NULL && s == NULL)
199 {
200 s = xcalloc (1, sizeof (struct type));
201 s->next = ls->u.s.lang_struct;
202 ls->u.s.lang_struct = s;
203 s->u.s.lang_struct = ls;
204 }
205 break;
206 }
207
208 if (s == NULL)
209 {
210 s = xcalloc (1, sizeof (struct type));
211 s->next = structures;
212 structures = s;
213 }
214
215 if (s->u.s.line.file != NULL
216 || (s->u.s.lang_struct && (s->u.s.lang_struct->u.s.bitmap & bitmap)))
217 {
218 error_at_line (pos, "duplicate structure definition");
219 error_at_line (&s->u.s.line, "previous definition here");
220 }
221
222 s->kind = isunion ? TYPE_UNION : TYPE_STRUCT;
223 s->u.s.tag = name;
224 s->u.s.line = *pos;
225 s->u.s.fields = fields;
226 s->u.s.opt = o;
227 s->u.s.bitmap = bitmap;
228 if (s->u.s.lang_struct)
229 s->u.s.lang_struct->u.s.bitmap |= bitmap;
230 }
231
232 /* Return the previously-defined structure with tag NAME (or a union
233 iff ISUNION is nonzero), or a new empty structure or union if none
234 was defined previously. */
235
236 type_p
237 find_structure (name, isunion)
238 const char *name;
239 int isunion;
240 {
241 type_p s;
242
243 for (s = structures; s != NULL; s = s->next)
244 if (strcmp (name, s->u.s.tag) == 0
245 && UNION_P (s) == isunion)
246 return s;
247
248 s = xcalloc (1, sizeof (struct type));
249 s->next = structures;
250 structures = s;
251 s->kind = isunion ? TYPE_UNION : TYPE_STRUCT;
252 s->u.s.tag = name;
253 structures = s;
254 return s;
255 }
256
257 /* Return the previously-defined parameterized structure for structure
258 T and parameters PARAM, or a new parameterized empty structure or
259 union if none was defined previously. */
260
261 static type_p
262 find_param_structure (t, param)
263 type_p t;
264 type_p param[NUM_PARAM];
265 {
266 type_p res;
267
268 for (res = param_structs; res; res = res->next)
269 if (res->u.param_struct.stru == t
270 && memcmp (res->u.param_struct.param, param,
271 sizeof (type_p) * NUM_PARAM) == 0)
272 break;
273 if (res == NULL)
274 {
275 res = xcalloc (1, sizeof (*res));
276 res->kind = TYPE_PARAM_STRUCT;
277 res->next = param_structs;
278 param_structs = res;
279 res->u.param_struct.stru = t;
280 memcpy (res->u.param_struct.param, param, sizeof (type_p) * NUM_PARAM);
281 }
282 return res;
283 }
284
285 /* Return a scalar type with name NAME. */
286
287 type_p
288 create_scalar_type (name, name_len)
289 const char *name;
290 size_t name_len;
291 {
292 type_p r = xcalloc (1, sizeof (struct type));
293 r->kind = TYPE_SCALAR;
294 r->u.sc = xmemdup (name, name_len, name_len + 1);
295 return r;
296 }
297
298 /* Return a pointer to T. */
299
300 type_p
301 create_pointer (t)
302 type_p t;
303 {
304 if (! t->pointer_to)
305 {
306 type_p r = xcalloc (1, sizeof (struct type));
307 r->kind = TYPE_POINTER;
308 r->u.p = t;
309 t->pointer_to = r;
310 }
311 return t->pointer_to;
312 }
313
314 /* Return an array of length LEN. */
315
316 type_p
317 create_array (t, len)
318 type_p t;
319 const char *len;
320 {
321 type_p v;
322
323 v = xcalloc (1, sizeof (*v));
324 v->kind = TYPE_ARRAY;
325 v->u.a.p = t;
326 v->u.a.len = len;
327 return v;
328 }
329
330 /* Add a variable named S of type T with options O defined at POS,
331 to `variables'. */
332
333 void
334 note_variable (s, t, o, pos)
335 const char *s;
336 type_p t;
337 options_p o;
338 struct fileloc *pos;
339 {
340 pair_p n;
341 n = xmalloc (sizeof (*n));
342 n->name = s;
343 n->type = t;
344 n->line = *pos;
345 n->opt = o;
346 n->next = variables;
347 variables = n;
348 }
349
350 enum rtx_code {
351 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) ENUM ,
352 #include "rtl.def"
353 #undef DEF_RTL_EXPR
354 NUM_RTX_CODE
355 };
356
357 /* We really don't care how long a CONST_DOUBLE is. */
358 #define CONST_DOUBLE_FORMAT "ww"
359 static const char * const rtx_format[NUM_RTX_CODE] = {
360 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) FORMAT ,
361 #include "rtl.def"
362 #undef DEF_RTL_EXPR
363 };
364
365 static int rtx_next[NUM_RTX_CODE];
366
367 /* Generate the contents of the rtx_next array. This really doesn't belong
368 in gengtype at all, but it's needed for adjust_field_rtx_def. */
369
370 static void
371 gen_rtx_next ()
372 {
373 int i;
374 for (i = 0; i < NUM_RTX_CODE; i++)
375 {
376 int k;
377
378 rtx_next[i] = -1;
379 if (strncmp (rtx_format[i], "iuu", 3) == 0)
380 rtx_next[i] = 2;
381 else if (i == COND_EXEC || i == SET || i == EXPR_LIST || i == INSN_LIST)
382 rtx_next[i] = 1;
383 else
384 for (k = strlen (rtx_format[i]) - 1; k >= 0; k--)
385 if (rtx_format[i][k] == 'e' || rtx_format[i][k] == 'u')
386 rtx_next[i] = k;
387 }
388 }
389
390 /* Write out the contents of the rtx_next array. */
391 static void
392 write_rtx_next ()
393 {
394 outf_p f = get_output_file_with_visibility (NULL);
395 int i;
396
397 oprintf (f, "\n/* Used to implement the RTX_NEXT macro. */\n");
398 oprintf (f, "const unsigned char rtx_next[NUM_RTX_CODE] = {\n");
399 for (i = 0; i < NUM_RTX_CODE; i++)
400 if (rtx_next[i] == -1)
401 oprintf (f, " 0,\n");
402 else
403 oprintf (f,
404 " offsetof (struct rtx_def, fld) + %d * sizeof (rtunion),\n",
405 rtx_next[i]);
406 oprintf (f, "};\n");
407 }
408
409 /* Handle `special("rtx_def")'. This is a special case for field
410 `fld' of struct rtx_def, which is an array of unions whose values
411 are based in a complex way on the type of RTL. */
412
413 static type_p
414 adjust_field_rtx_def (t, opt)
415 type_p t;
416 options_p opt ATTRIBUTE_UNUSED;
417 {
418 pair_p flds = NULL;
419 options_p nodot;
420 int i;
421 type_p rtx_tp, rtvec_tp, tree_tp, mem_attrs_tp, note_union_tp, scalar_tp;
422 type_p bitmap_tp, basic_block_tp;
423
424 static const char * const rtx_name[NUM_RTX_CODE] = {
425 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) NAME ,
426 #include "rtl.def"
427 #undef DEF_RTL_EXPR
428 };
429
430 if (t->kind != TYPE_ARRAY)
431 {
432 error_at_line (&lexer_line,
433 "special `rtx_def' must be applied to an array");
434 return &string_type;
435 }
436
437 nodot = xmalloc (sizeof (*nodot));
438 nodot->next = NULL;
439 nodot->name = "dot";
440 nodot->info = "";
441
442 rtx_tp = create_pointer (find_structure ("rtx_def", 0));
443 rtvec_tp = create_pointer (find_structure ("rtvec_def", 0));
444 tree_tp = create_pointer (find_structure ("tree_node", 1));
445 mem_attrs_tp = create_pointer (find_structure ("mem_attrs", 0));
446 bitmap_tp = create_pointer (find_structure ("bitmap_element_def", 0));
447 basic_block_tp = create_pointer (find_structure ("basic_block_def", 0));
448 scalar_tp = create_scalar_type ("rtunion scalar", 14);
449
450 {
451 pair_p note_flds = NULL;
452 int c;
453
454 for (c = 0; c < 3; c++)
455 {
456 pair_p old_note_flds = note_flds;
457
458 note_flds = xmalloc (sizeof (*note_flds));
459 note_flds->line.file = __FILE__;
460 note_flds->line.line = __LINE__;
461 note_flds->name = "rttree";
462 note_flds->type = tree_tp;
463 note_flds->opt = xmalloc (sizeof (*note_flds->opt));
464 note_flds->opt->next = nodot;
465 note_flds->opt->name = "tag";
466 note_flds->next = old_note_flds;
467 }
468
469 note_flds->type = rtx_tp;
470 note_flds->name = "rtx";
471 note_flds->opt->info = "NOTE_INSN_EXPECTED_VALUE";
472 note_flds->next->opt->info = "NOTE_INSN_BLOCK_BEG";
473 note_flds->next->next->opt->info = "NOTE_INSN_BLOCK_END";
474
475 new_structure ("rtx_def_note_subunion", 1, &lexer_line, note_flds, NULL);
476 }
477
478 note_union_tp = find_structure ("rtx_def_note_subunion", 1);
479
480 for (i = 0; i < NUM_RTX_CODE; i++)
481 {
482 pair_p old_flds = flds;
483 pair_p subfields = NULL;
484 size_t aindex, nmindex;
485 const char *sname;
486 char *ftag;
487
488 for (aindex = 0; aindex < strlen (rtx_format[i]); aindex++)
489 {
490 pair_p old_subf = subfields;
491 type_p t;
492 const char *subname;
493
494 switch (rtx_format[i][aindex])
495 {
496 case '*':
497 case 'i':
498 case 'n':
499 case 'w':
500 t = scalar_tp;
501 subname = "rtint";
502 break;
503
504 case '0':
505 if (i == MEM && aindex == 1)
506 t = mem_attrs_tp, subname = "rtmem";
507 else if (i == JUMP_INSN && aindex == 9)
508 t = rtx_tp, subname = "rtx";
509 else if (i == CODE_LABEL && aindex == 4)
510 t = scalar_tp, subname = "rtint";
511 else if (i == CODE_LABEL && aindex == 5)
512 t = rtx_tp, subname = "rtx";
513 else if (i == LABEL_REF
514 && (aindex == 1 || aindex == 2))
515 t = rtx_tp, subname = "rtx";
516 else if (i == NOTE && aindex == 4)
517 t = note_union_tp, subname = "";
518 else if (i == NOTE && aindex >= 7)
519 t = scalar_tp, subname = "rtint";
520 else if (i == ADDR_DIFF_VEC && aindex == 4)
521 t = scalar_tp, subname = "rtint";
522 else if (i == VALUE && aindex == 0)
523 t = scalar_tp, subname = "rtint";
524 else if (i == REG && aindex == 1)
525 t = scalar_tp, subname = "rtint";
526 else if (i == SCRATCH && aindex == 0)
527 t = scalar_tp, subname = "rtint";
528 else if (i == BARRIER && aindex >= 3)
529 t = scalar_tp, subname = "rtint";
530 else
531 {
532 error_at_line (&lexer_line,
533 "rtx type `%s' has `0' in position %lu, can't handle",
534 rtx_name[i], (unsigned long) aindex);
535 t = &string_type;
536 subname = "rtint";
537 }
538 break;
539
540 case 's':
541 case 'S':
542 case 'T':
543 t = &string_type;
544 subname = "rtstr";
545 break;
546
547 case 'e':
548 case 'u':
549 t = rtx_tp;
550 subname = "rtx";
551 break;
552
553 case 'E':
554 case 'V':
555 t = rtvec_tp;
556 subname = "rtvec";
557 break;
558
559 case 't':
560 t = tree_tp;
561 subname = "rttree";
562 break;
563
564 case 'b':
565 t = bitmap_tp;
566 subname = "rtbit";
567 break;
568
569 case 'B':
570 t = basic_block_tp;
571 subname = "bb";
572 break;
573
574 default:
575 error_at_line (&lexer_line,
576 "rtx type `%s' has `%c' in position %lu, can't handle",
577 rtx_name[i], rtx_format[i][aindex],
578 (unsigned long)aindex);
579 t = &string_type;
580 subname = "rtint";
581 break;
582 }
583
584 subfields = xmalloc (sizeof (*subfields));
585 subfields->next = old_subf;
586 subfields->type = t;
587 subfields->name = xasprintf ("[%lu].%s", (unsigned long)aindex,
588 subname);
589 subfields->line.file = __FILE__;
590 subfields->line.line = __LINE__;
591 if (t == note_union_tp)
592 {
593 subfields->opt = xmalloc (sizeof (*subfields->opt));
594 subfields->opt->next = nodot;
595 subfields->opt->name = "desc";
596 subfields->opt->info = "NOTE_LINE_NUMBER (&%0)";
597 }
598 else if (t == basic_block_tp)
599 {
600 /* We don't presently GC basic block structures... */
601 subfields->opt = xmalloc (sizeof (*subfields->opt));
602 subfields->opt->next = nodot;
603 subfields->opt->name = "skip";
604 subfields->opt->info = NULL;
605 }
606 else if ((size_t) rtx_next[i] == aindex)
607 {
608 /* The 'next' field will be marked by the chain_next option. */
609 subfields->opt = xmalloc (sizeof (*subfields->opt));
610 subfields->opt->next = nodot;
611 subfields->opt->name = "skip";
612 subfields->opt->info = NULL;
613 }
614 else
615 subfields->opt = nodot;
616 }
617
618 flds = xmalloc (sizeof (*flds));
619 flds->next = old_flds;
620 flds->name = "";
621 sname = xasprintf ("rtx_def_%s", rtx_name[i]);
622 new_structure (sname, 0, &lexer_line, subfields, NULL);
623 flds->type = find_structure (sname, 0);
624 flds->line.file = __FILE__;
625 flds->line.line = __LINE__;
626 flds->opt = xmalloc (sizeof (*flds->opt));
627 flds->opt->next = nodot;
628 flds->opt->name = "tag";
629 ftag = xstrdup (rtx_name[i]);
630 for (nmindex = 0; nmindex < strlen (ftag); nmindex++)
631 ftag[nmindex] = TOUPPER (ftag[nmindex]);
632 flds->opt->info = ftag;
633 }
634
635 new_structure ("rtx_def_subunion", 1, &lexer_line, flds, nodot);
636 return find_structure ("rtx_def_subunion", 1);
637 }
638
639 /* Handle `special("tree_exp")'. This is a special case for
640 field `operands' of struct tree_exp, which although it claims to contain
641 pointers to trees, actually sometimes contains pointers to RTL too.
642 Passed T, the old type of the field, and OPT its options. Returns
643 a new type for the field. */
644
645 static type_p
646 adjust_field_tree_exp (t, opt)
647 type_p t;
648 options_p opt ATTRIBUTE_UNUSED;
649 {
650 pair_p flds;
651 options_p nodot;
652 size_t i;
653 static const struct {
654 const char *name;
655 int first_rtl;
656 int num_rtl;
657 } data[] = {
658 { "SAVE_EXPR", 2, 1 },
659 { "GOTO_SUBROUTINE_EXPR", 0, 2 },
660 { "RTL_EXPR", 0, 2 },
661 { "WITH_CLEANUP_EXPR", 2, 1 },
662 { "METHOD_CALL_EXPR", 3, 1 }
663 };
664
665 if (t->kind != TYPE_ARRAY)
666 {
667 error_at_line (&lexer_line,
668 "special `tree_exp' must be applied to an array");
669 return &string_type;
670 }
671
672 nodot = xmalloc (sizeof (*nodot));
673 nodot->next = NULL;
674 nodot->name = "dot";
675 nodot->info = "";
676
677 flds = xmalloc (sizeof (*flds));
678 flds->next = NULL;
679 flds->name = "";
680 flds->type = t;
681 flds->line.file = __FILE__;
682 flds->line.line = __LINE__;
683 flds->opt = xmalloc (sizeof (*flds->opt));
684 flds->opt->next = nodot;
685 flds->opt->name = "length";
686 flds->opt->info = "TREE_CODE_LENGTH (TREE_CODE ((tree) &%0))";
687 {
688 options_p oldopt = flds->opt;
689 flds->opt = xmalloc (sizeof (*flds->opt));
690 flds->opt->next = oldopt;
691 flds->opt->name = "default";
692 flds->opt->info = "";
693 }
694
695 for (i = 0; i < ARRAY_SIZE (data); i++)
696 {
697 pair_p old_flds = flds;
698 pair_p subfields = NULL;
699 int r_index;
700 const char *sname;
701
702 for (r_index = 0;
703 r_index < data[i].first_rtl + data[i].num_rtl;
704 r_index++)
705 {
706 pair_p old_subf = subfields;
707 subfields = xmalloc (sizeof (*subfields));
708 subfields->next = old_subf;
709 subfields->name = xasprintf ("[%d]", r_index);
710 if (r_index < data[i].first_rtl)
711 subfields->type = t->u.a.p;
712 else
713 subfields->type = create_pointer (find_structure ("rtx_def", 0));
714 subfields->line.file = __FILE__;
715 subfields->line.line = __LINE__;
716 subfields->opt = nodot;
717 }
718
719 flds = xmalloc (sizeof (*flds));
720 flds->next = old_flds;
721 flds->name = "";
722 sname = xasprintf ("tree_exp_%s", data[i].name);
723 new_structure (sname, 0, &lexer_line, subfields, NULL);
724 flds->type = find_structure (sname, 0);
725 flds->line.file = __FILE__;
726 flds->line.line = __LINE__;
727 flds->opt = xmalloc (sizeof (*flds->opt));
728 flds->opt->next = nodot;
729 flds->opt->name = "tag";
730 flds->opt->info = data[i].name;
731 }
732
733 new_structure ("tree_exp_subunion", 1, &lexer_line, flds, nodot);
734 return find_structure ("tree_exp_subunion", 1);
735 }
736
737 /* Perform any special processing on a type T, about to become the type
738 of a field. Return the appropriate type for the field.
739 At present:
740 - Converts pointer-to-char, with no length parameter, to TYPE_STRING;
741 - Similarly for arrays of pointer-to-char;
742 - Converts structures for which a parameter is provided to
743 TYPE_PARAM_STRUCT;
744 - Handles "special" options.
745 */
746
747 type_p
748 adjust_field_type (t, opt)
749 type_p t;
750 options_p opt;
751 {
752 int length_p = 0;
753 const int pointer_p = t->kind == TYPE_POINTER;
754 type_p params[NUM_PARAM];
755 int params_p = 0;
756 int i;
757
758 for (i = 0; i < NUM_PARAM; i++)
759 params[i] = NULL;
760
761 for (; opt; opt = opt->next)
762 if (strcmp (opt->name, "length") == 0)
763 length_p = 1;
764 else if (strcmp (opt->name, "param_is") == 0
765 || (strncmp (opt->name, "param", 5) == 0
766 && ISDIGIT (opt->name[5])
767 && strcmp (opt->name + 6, "_is") == 0))
768 {
769 int num = ISDIGIT (opt->name[5]) ? opt->name[5] - '0' : 0;
770
771 if (! UNION_OR_STRUCT_P (t)
772 && (t->kind != TYPE_POINTER || ! UNION_OR_STRUCT_P (t->u.p)))
773 {
774 error_at_line (&lexer_line,
775 "option `%s' may only be applied to structures or structure pointers",
776 opt->name);
777 return t;
778 }
779
780 params_p = 1;
781 if (params[num] != NULL)
782 error_at_line (&lexer_line, "duplicate `%s' option", opt->name);
783 if (! ISDIGIT (opt->name[5]))
784 params[num] = create_pointer ((type_p) opt->info);
785 else
786 params[num] = (type_p) opt->info;
787 }
788 else if (strcmp (opt->name, "special") == 0)
789 {
790 const char *special_name = (const char *)opt->info;
791 if (strcmp (special_name, "tree_exp") == 0)
792 t = adjust_field_tree_exp (t, opt);
793 else if (strcmp (special_name, "rtx_def") == 0)
794 t = adjust_field_rtx_def (t, opt);
795 else
796 error_at_line (&lexer_line, "unknown special `%s'", special_name);
797 }
798
799 if (params_p)
800 {
801 type_p realt;
802
803 if (pointer_p)
804 t = t->u.p;
805 realt = find_param_structure (t, params);
806 t = pointer_p ? create_pointer (realt) : realt;
807 }
808
809 if (! length_p
810 && pointer_p
811 && t->u.p->kind == TYPE_SCALAR
812 && (strcmp (t->u.p->u.sc, "char") == 0
813 || strcmp (t->u.p->u.sc, "unsigned char") == 0))
814 return &string_type;
815 if (t->kind == TYPE_ARRAY && t->u.a.p->kind == TYPE_POINTER
816 && t->u.a.p->u.p->kind == TYPE_SCALAR
817 && (strcmp (t->u.a.p->u.p->u.sc, "char") == 0
818 || strcmp (t->u.a.p->u.p->u.sc, "unsigned char") == 0))
819 return create_array (&string_type, t->u.a.len);
820
821 return t;
822 }
823
824 /* Create a union for YYSTYPE, as yacc would do it, given a fieldlist FIELDS
825 and information about the correspondance between token types and fields
826 in TYPEINFO. POS is used for error messages. */
827
828 void
829 note_yacc_type (o, fields, typeinfo, pos)
830 options_p o;
831 pair_p fields;
832 pair_p typeinfo;
833 struct fileloc *pos;
834 {
835 pair_p p;
836 pair_p *p_p;
837
838 for (p = typeinfo; p; p = p->next)
839 {
840 pair_p m;
841
842 if (p->name == NULL)
843 continue;
844
845 if (p->type == (type_p) 1)
846 {
847 pair_p pp;
848 int ok = 0;
849
850 for (pp = typeinfo; pp; pp = pp->next)
851 if (pp->type != (type_p) 1
852 && strcmp (pp->opt->info, p->opt->info) == 0)
853 {
854 ok = 1;
855 break;
856 }
857 if (! ok)
858 continue;
859 }
860
861 for (m = fields; m; m = m->next)
862 if (strcmp (m->name, p->name) == 0)
863 p->type = m->type;
864 if (p->type == NULL)
865 {
866 error_at_line (&p->line,
867 "couldn't match fieldname `%s'", p->name);
868 p->name = NULL;
869 }
870 }
871
872 p_p = &typeinfo;
873 while (*p_p)
874 {
875 pair_p p = *p_p;
876
877 if (p->name == NULL
878 || p->type == (type_p) 1)
879 *p_p = p->next;
880 else
881 p_p = &p->next;
882 }
883
884 new_structure ("yy_union", 1, pos, typeinfo, o);
885 do_typedef ("YYSTYPE", find_structure ("yy_union", 1), pos);
886 }
887 \f
888 static void process_gc_options PARAMS ((options_p, enum gc_used_enum,
889 int *, int *, int *));
890 static void set_gc_used_type PARAMS ((type_p, enum gc_used_enum, type_p *));
891 static void set_gc_used PARAMS ((pair_p));
892
893 /* Handle OPT for set_gc_used_type. */
894
895 static void
896 process_gc_options (opt, level, maybe_undef, pass_param, length)
897 options_p opt;
898 enum gc_used_enum level;
899 int *maybe_undef;
900 int *pass_param;
901 int *length;
902 {
903 options_p o;
904 for (o = opt; o; o = o->next)
905 if (strcmp (o->name, "ptr_alias") == 0 && level == GC_POINTED_TO)
906 set_gc_used_type ((type_p) o->info, GC_POINTED_TO, NULL);
907 else if (strcmp (o->name, "maybe_undef") == 0)
908 *maybe_undef = 1;
909 else if (strcmp (o->name, "use_params") == 0)
910 *pass_param = 1;
911 else if (strcmp (o->name, "length") == 0)
912 *length = 1;
913 }
914
915 /* Set the gc_used field of T to LEVEL, and handle the types it references. */
916
917 static void
918 set_gc_used_type (t, level, param)
919 type_p t;
920 enum gc_used_enum level;
921 type_p param[NUM_PARAM];
922 {
923 if (t->gc_used >= level)
924 return;
925
926 t->gc_used = level;
927
928 switch (t->kind)
929 {
930 case TYPE_STRUCT:
931 case TYPE_UNION:
932 {
933 pair_p f;
934 int dummy;
935
936 process_gc_options (t->u.s.opt, level, &dummy, &dummy, &dummy);
937
938 for (f = t->u.s.fields; f; f = f->next)
939 {
940 int maybe_undef = 0;
941 int pass_param = 0;
942 int length = 0;
943 process_gc_options (f->opt, level, &maybe_undef, &pass_param,
944 &length);
945
946 if (length && f->type->kind == TYPE_POINTER)
947 set_gc_used_type (f->type->u.p, GC_USED, NULL);
948 else if (maybe_undef && f->type->kind == TYPE_POINTER)
949 set_gc_used_type (f->type->u.p, GC_MAYBE_POINTED_TO, NULL);
950 else if (pass_param && f->type->kind == TYPE_POINTER && param)
951 set_gc_used_type (find_param_structure (f->type->u.p, param),
952 GC_POINTED_TO, NULL);
953 else
954 set_gc_used_type (f->type, GC_USED, pass_param ? param : NULL);
955 }
956 break;
957 }
958
959 case TYPE_POINTER:
960 set_gc_used_type (t->u.p, GC_POINTED_TO, NULL);
961 break;
962
963 case TYPE_ARRAY:
964 set_gc_used_type (t->u.a.p, GC_USED, param);
965 break;
966
967 case TYPE_LANG_STRUCT:
968 for (t = t->u.s.lang_struct; t; t = t->next)
969 set_gc_used_type (t, level, param);
970 break;
971
972 case TYPE_PARAM_STRUCT:
973 {
974 int i;
975 for (i = 0; i < NUM_PARAM; i++)
976 if (t->u.param_struct.param[i] != 0)
977 set_gc_used_type (t->u.param_struct.param[i], GC_USED, NULL);
978 }
979 if (t->u.param_struct.stru->gc_used == GC_POINTED_TO)
980 level = GC_POINTED_TO;
981 else
982 level = GC_USED;
983 t->u.param_struct.stru->gc_used = GC_UNUSED;
984 set_gc_used_type (t->u.param_struct.stru, level,
985 t->u.param_struct.param);
986 break;
987
988 default:
989 break;
990 }
991 }
992
993 /* Set the gc_used fields of all the types pointed to by VARIABLES. */
994
995 static void
996 set_gc_used (variables)
997 pair_p variables;
998 {
999 pair_p p;
1000 for (p = variables; p; p = p->next)
1001 set_gc_used_type (p->type, GC_USED, NULL);
1002 }
1003 \f
1004 /* File mapping routines. For each input file, there is one output .c file
1005 (but some output files have many input files), and there is one .h file
1006 for the whole build. */
1007
1008 /* The list of output files. */
1009 static outf_p output_files;
1010
1011 /* The output header file that is included into pretty much every
1012 source file. */
1013 outf_p header_file;
1014
1015 /* Number of files specified in gtfiles. */
1016 #define NUM_GT_FILES (ARRAY_SIZE (all_files) - 1)
1017
1018 /* Number of files in the language files array. */
1019 #define NUM_LANG_FILES (ARRAY_SIZE (lang_files) - 1)
1020
1021 /* Length of srcdir name. */
1022 static int srcdir_len = 0;
1023
1024 #define NUM_BASE_FILES (ARRAY_SIZE (lang_dir_names) - 1)
1025 outf_p base_files[NUM_BASE_FILES];
1026
1027 static outf_p create_file PARAMS ((const char *, const char *));
1028 static const char * get_file_basename PARAMS ((const char *));
1029
1030 /* Create and return an outf_p for a new file for NAME, to be called
1031 ONAME. */
1032
1033 static outf_p
1034 create_file (name, oname)
1035 const char *name;
1036 const char *oname;
1037 {
1038 static const char *const hdr[] = {
1039 " Copyright (C) 2002 Free Software Foundation, Inc.\n",
1040 "\n",
1041 "This file is part of GCC.\n",
1042 "\n",
1043 "GCC is free software; you can redistribute it and/or modify it under\n",
1044 "the terms of the GNU General Public License as published by the Free\n",
1045 "Software Foundation; either version 2, or (at your option) any later\n",
1046 "version.\n",
1047 "\n",
1048 "GCC is distributed in the hope that it will be useful, but WITHOUT ANY\n",
1049 "WARRANTY; without even the implied warranty of MERCHANTABILITY or\n",
1050 "FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License\n",
1051 "for more details.\n",
1052 "\n",
1053 "You should have received a copy of the GNU General Public License\n",
1054 "along with GCC; see the file COPYING. If not, write to the Free\n",
1055 "Software Foundation, 59 Temple Place - Suite 330, Boston, MA\n",
1056 "02111-1307, USA. */\n",
1057 "\n",
1058 "/* This file is machine generated. Do not edit. */\n"
1059 };
1060 outf_p f;
1061 size_t i;
1062
1063 f = xcalloc (sizeof (*f), 1);
1064 f->next = output_files;
1065 f->name = oname;
1066 output_files = f;
1067
1068 oprintf (f, "/* Type information for %s.\n", name);
1069 for (i = 0; i < ARRAY_SIZE (hdr); i++)
1070 oprintf (f, "%s", hdr[i]);
1071 return f;
1072 }
1073
1074 /* Print, like fprintf, to O. */
1075 void
1076 oprintf VPARAMS ((outf_p o, const char *format, ...))
1077 {
1078 char *s;
1079 size_t slength;
1080
1081 VA_OPEN (ap, format);
1082 VA_FIXEDARG (ap, outf_p, o);
1083 VA_FIXEDARG (ap, const char *, format);
1084 slength = xvasprintf (&s, format, ap);
1085
1086 if (o->bufused + slength > o->buflength)
1087 {
1088 size_t new_len = o->buflength;
1089 if (new_len == 0)
1090 new_len = 1024;
1091 do {
1092 new_len *= 2;
1093 } while (o->bufused + slength >= new_len);
1094 o->buf = xrealloc (o->buf, new_len);
1095 o->buflength = new_len;
1096 }
1097 memcpy (o->buf + o->bufused, s, slength);
1098 o->bufused += slength;
1099 free (s);
1100 VA_CLOSE (ap);
1101 }
1102
1103 /* Open the global header file and the language-specific header files. */
1104
1105 static void
1106 open_base_files ()
1107 {
1108 size_t i;
1109
1110 header_file = create_file ("GCC", "gtype-desc.h");
1111
1112 for (i = 0; i < NUM_BASE_FILES; i++)
1113 base_files[i] = create_file (lang_dir_names[i],
1114 xasprintf ("gtype-%s.h", lang_dir_names[i]));
1115
1116 /* gtype-desc.c is a little special, so we create it here. */
1117 {
1118 /* The order of files here matters very much. */
1119 static const char *const ifiles [] = {
1120 "config.h", "system.h", "coretypes.h", "tm.h", "varray.h",
1121 "hashtab.h", "splay-tree.h", "bitmap.h", "tree.h", "rtl.h",
1122 "function.h", "insn-config.h", "expr.h", "hard-reg-set.h",
1123 "basic-block.h", "cselib.h", "insn-addr.h", "ssa.h", "optabs.h",
1124 "libfuncs.h", "debug.h", "ggc.h",
1125 NULL
1126 };
1127 const char *const *ifp;
1128 outf_p gtype_desc_c;
1129
1130 gtype_desc_c = create_file ("GCC", "gtype-desc.c");
1131 for (ifp = ifiles; *ifp; ifp++)
1132 oprintf (gtype_desc_c, "#include \"%s\"\n", *ifp);
1133 }
1134 }
1135
1136 /* Determine the pathname to F relative to $(srcdir). */
1137
1138 static const char *
1139 get_file_basename (f)
1140 const char *f;
1141 {
1142 const char *basename;
1143 unsigned i;
1144
1145 basename = strrchr (f, '/');
1146
1147 if (!basename)
1148 return f;
1149
1150 basename++;
1151
1152 for (i = 1; i < NUM_BASE_FILES; i++)
1153 {
1154 const char * s1;
1155 const char * s2;
1156 int l1;
1157 int l2;
1158 s1 = basename - strlen (lang_dir_names [i]) - 1;
1159 s2 = lang_dir_names [i];
1160 l1 = strlen (s1);
1161 l2 = strlen (s2);
1162 if (l1 >= l2 && !memcmp (s1, s2, l2))
1163 {
1164 basename -= l2 + 1;
1165 if ((basename - f - 1) != srcdir_len)
1166 abort (); /* Match is wrong - should be preceded by $srcdir. */
1167 break;
1168 }
1169 }
1170
1171 return basename;
1172 }
1173
1174 /* Return a bitmap which has bit `1 << BASE_FILE_<lang>' set iff
1175 INPUT_FILE is used by <lang>.
1176
1177 This function should be written to assume that a file _is_ used
1178 if the situation is unclear. If it wrongly assumes a file _is_ used,
1179 a linker error will result. If it wrongly assumes a file _is not_ used,
1180 some GC roots may be missed, which is a much harder-to-debug problem. */
1181
1182 unsigned
1183 get_base_file_bitmap (input_file)
1184 const char *input_file;
1185 {
1186 const char *basename = get_file_basename (input_file);
1187 const char *slashpos = strchr (basename, '/');
1188 unsigned j;
1189 unsigned k;
1190 unsigned bitmap;
1191
1192 if (slashpos)
1193 {
1194 size_t i;
1195 for (i = 1; i < NUM_BASE_FILES; i++)
1196 if ((size_t)(slashpos - basename) == strlen (lang_dir_names [i])
1197 && memcmp (basename, lang_dir_names[i], strlen (lang_dir_names[i])) == 0)
1198 {
1199 /* It's in a language directory, set that language. */
1200 bitmap = 1 << i;
1201 return bitmap;
1202 }
1203
1204 abort (); /* Should have found the language. */
1205 }
1206
1207 /* If it's in any config-lang.in, then set for the languages
1208 specified. */
1209
1210 bitmap = 0;
1211
1212 for (j = 0; j < NUM_LANG_FILES; j++)
1213 {
1214 if (!strcmp(input_file, lang_files[j]))
1215 {
1216 for (k = 0; k < NUM_BASE_FILES; k++)
1217 {
1218 if (!strcmp(lang_dir_names[k], langs_for_lang_files[j]))
1219 bitmap |= (1 << k);
1220 }
1221 }
1222 }
1223
1224 /* Otherwise, set all languages. */
1225 if (!bitmap)
1226 bitmap = (1 << NUM_BASE_FILES) - 1;
1227
1228 return bitmap;
1229 }
1230
1231 /* An output file, suitable for definitions, that can see declarations
1232 made in INPUT_FILE and is linked into every language that uses
1233 INPUT_FILE. */
1234
1235 outf_p
1236 get_output_file_with_visibility (input_file)
1237 const char *input_file;
1238 {
1239 outf_p r;
1240 size_t len;
1241 const char *basename;
1242 const char *for_name;
1243 const char *output_name;
1244
1245 /* This can happen when we need a file with visibility on a
1246 structure that we've never seen. We have to just hope that it's
1247 globally visible. */
1248 if (input_file == NULL)
1249 input_file = "system.h";
1250
1251 /* Determine the output file name. */
1252 basename = get_file_basename (input_file);
1253
1254 len = strlen (basename);
1255 if ((len > 2 && memcmp (basename+len-2, ".c", 2) == 0)
1256 || (len > 2 && memcmp (basename+len-2, ".y", 2) == 0)
1257 || (len > 3 && memcmp (basename+len-3, ".in", 3) == 0))
1258 {
1259 char *s;
1260
1261 output_name = s = xasprintf ("gt-%s", basename);
1262 for (; *s != '.'; s++)
1263 if (! ISALNUM (*s) && *s != '-')
1264 *s = '-';
1265 memcpy (s, ".h", sizeof (".h"));
1266 for_name = basename;
1267 }
1268 else if (strcmp (basename, "c-common.h") == 0)
1269 output_name = "gt-c-common.h", for_name = "c-common.c";
1270 else if (strcmp (basename, "c-tree.h") == 0)
1271 output_name = "gt-c-decl.h", for_name = "c-decl.c";
1272 else
1273 {
1274 size_t i;
1275
1276 for (i = 0; i < NUM_BASE_FILES; i++)
1277 if (memcmp (basename, lang_dir_names[i], strlen (lang_dir_names[i])) == 0
1278 && basename[strlen(lang_dir_names[i])] == '/')
1279 return base_files[i];
1280
1281 output_name = "gtype-desc.c";
1282 for_name = NULL;
1283 }
1284
1285 /* Look through to see if we've ever seen this output filename before. */
1286 for (r = output_files; r; r = r->next)
1287 if (strcmp (r->name, output_name) == 0)
1288 return r;
1289
1290 /* If not, create it. */
1291 r = create_file (for_name, output_name);
1292
1293 return r;
1294 }
1295
1296 /* The name of an output file, suitable for definitions, that can see
1297 declarations made in INPUT_FILE and is linked into every language
1298 that uses INPUT_FILE. */
1299
1300 const char *
1301 get_output_file_name (input_file)
1302 const char *input_file;
1303 {
1304 return get_output_file_with_visibility (input_file)->name;
1305 }
1306
1307 /* Copy the output to its final destination,
1308 but don't unnecessarily change modification times. */
1309
1310 static void close_output_files PARAMS ((void));
1311
1312 static void
1313 close_output_files ()
1314 {
1315 outf_p of;
1316
1317 for (of = output_files; of; of = of->next)
1318 {
1319 FILE * newfile;
1320
1321 newfile = fopen (of->name, "r");
1322 if (newfile != NULL )
1323 {
1324 int no_write_p;
1325 size_t i;
1326
1327 for (i = 0; i < of->bufused; i++)
1328 {
1329 int ch;
1330 ch = fgetc (newfile);
1331 if (ch == EOF || ch != (unsigned char) of->buf[i])
1332 break;
1333 }
1334 no_write_p = i == of->bufused && fgetc (newfile) == EOF;
1335 fclose (newfile);
1336
1337 if (no_write_p)
1338 continue;
1339 }
1340
1341 newfile = fopen (of->name, "w");
1342 if (newfile == NULL)
1343 {
1344 perror ("opening output file");
1345 exit (1);
1346 }
1347 if (fwrite (of->buf, 1, of->bufused, newfile) != of->bufused)
1348 {
1349 perror ("writing output file");
1350 exit (1);
1351 }
1352 if (fclose (newfile) != 0)
1353 {
1354 perror ("closing output file");
1355 exit (1);
1356 }
1357 }
1358 }
1359 \f
1360 struct flist {
1361 struct flist *next;
1362 int started_p;
1363 const char *name;
1364 outf_p f;
1365 };
1366
1367 static void output_escaped_param PARAMS ((outf_p , const char *, const char *,
1368 const char *, const char *,
1369 struct fileloc *));
1370 static void output_mangled_typename PARAMS ((outf_p, type_p));
1371 static void write_gc_structure_fields
1372 PARAMS ((outf_p , type_p, const char *, const char *, options_p,
1373 int, struct fileloc *, lang_bitmap, type_p *));
1374 static void write_gc_marker_routine_for_structure PARAMS ((type_p, type_p,
1375 type_p *));
1376 static void write_gc_types PARAMS ((type_p structures, type_p param_structs));
1377 static void write_enum_defn PARAMS ((type_p structures, type_p param_structs));
1378 static void put_mangled_filename PARAMS ((outf_p , const char *));
1379 static void finish_root_table PARAMS ((struct flist *flp, const char *pfx,
1380 const char *tname, const char *lastname,
1381 const char *name));
1382 static void write_gc_root PARAMS ((outf_p , pair_p, type_p, const char *, int,
1383 struct fileloc *, const char *));
1384 static void write_gc_roots PARAMS ((pair_p));
1385
1386 static int gc_counter;
1387
1388 /* Print PARAM to OF processing escapes. VAL references the current object,
1389 PREV_VAL the object containing the current object, ONAME is the name
1390 of the option and LINE is used to print error messages. */
1391
1392 static void
1393 output_escaped_param (of, param, val, prev_val, oname, line)
1394 outf_p of;
1395 const char *param;
1396 const char *val;
1397 const char *prev_val;
1398 const char *oname;
1399 struct fileloc *line;
1400 {
1401 const char *p;
1402
1403 for (p = param; *p; p++)
1404 if (*p != '%')
1405 oprintf (of, "%c", *p);
1406 else switch (*++p)
1407 {
1408 case 'h':
1409 oprintf (of, "(%s)", val);
1410 break;
1411 case '0':
1412 oprintf (of, "(*x)");
1413 break;
1414 case '1':
1415 oprintf (of, "(%s)", prev_val);
1416 break;
1417 case 'a':
1418 {
1419 const char *pp = val + strlen (val);
1420 while (pp[-1] == ']')
1421 while (*pp != '[')
1422 pp--;
1423 oprintf (of, "%s", pp);
1424 }
1425 break;
1426 default:
1427 error_at_line (line, "`%s' option contains bad escape %c%c",
1428 oname, '%', *p);
1429 }
1430 }
1431
1432 /* Print a mangled name representing T to OF. */
1433
1434 static void
1435 output_mangled_typename (of, t)
1436 outf_p of;
1437 type_p t;
1438 {
1439 if (t == NULL)
1440 oprintf (of, "Z");
1441 else switch (t->kind)
1442 {
1443 case TYPE_POINTER:
1444 oprintf (of, "P");
1445 output_mangled_typename (of, t->u.p);
1446 break;
1447 case TYPE_SCALAR:
1448 oprintf (of, "I");
1449 break;
1450 case TYPE_STRING:
1451 oprintf (of, "S");
1452 break;
1453 case TYPE_STRUCT:
1454 case TYPE_UNION:
1455 case TYPE_LANG_STRUCT:
1456 oprintf (of, "%lu%s", (unsigned long) strlen (t->u.s.tag), t->u.s.tag);
1457 break;
1458 case TYPE_PARAM_STRUCT:
1459 {
1460 int i;
1461 for (i = 0; i < NUM_PARAM; i++)
1462 if (t->u.param_struct.param[i] != NULL)
1463 output_mangled_typename (of, t->u.param_struct.param[i]);
1464 output_mangled_typename (of, t->u.param_struct.stru);
1465 }
1466 break;
1467 case TYPE_ARRAY:
1468 abort ();
1469 }
1470 }
1471
1472 /* Write out code to OF which marks the fields of S. VAL references
1473 the current object, PREV_VAL the object containing the current
1474 object, OPTS is a list of options to apply, INDENT is the current
1475 indentation level, LINE is used to print error messages, BITMAP
1476 indicates which languages to print the structure for, and PARAM is
1477 the current parameter (from an enclosing param_is option). */
1478
1479 static void
1480 write_gc_structure_fields (of, s, val, prev_val, opts, indent, line, bitmap,
1481 param)
1482 outf_p of;
1483 type_p s;
1484 const char *val;
1485 const char *prev_val;
1486 options_p opts;
1487 int indent;
1488 struct fileloc *line;
1489 lang_bitmap bitmap;
1490 type_p * param;
1491 {
1492 pair_p f;
1493 int seen_default = 0;
1494
1495 if (! s->u.s.line.file)
1496 error_at_line (line, "incomplete structure `%s'", s->u.s.tag);
1497 else if ((s->u.s.bitmap & bitmap) != bitmap)
1498 {
1499 error_at_line (line, "structure defined for mismatching languages");
1500 error_at_line (&s->u.s.line, "one structure defined here");
1501 }
1502
1503 if (s->kind == TYPE_UNION)
1504 {
1505 const char *tagexpr = NULL;
1506 options_p oo;
1507
1508 for (oo = opts; oo; oo = oo->next)
1509 if (strcmp (oo->name, "desc") == 0)
1510 tagexpr = (const char *)oo->info;
1511 if (tagexpr == NULL)
1512 {
1513 tagexpr = "1";
1514 error_at_line (line, "missing `desc' option");
1515 }
1516
1517 oprintf (of, "%*sswitch (", indent, "");
1518 output_escaped_param (of, tagexpr, val, prev_val, "desc", line);
1519 oprintf (of, ")\n");
1520 indent += 2;
1521 oprintf (of, "%*s{\n", indent, "");
1522 }
1523
1524 for (f = s->u.s.fields; f; f = f->next)
1525 {
1526 const char *tagid = NULL;
1527 const char *length = NULL;
1528 int skip_p = 0;
1529 int default_p = 0;
1530 int maybe_undef_p = 0;
1531 int use_param_num = -1;
1532 int use_params_p = 0;
1533 int needs_cast_p = 0;
1534 options_p oo;
1535 type_p t = f->type;
1536 const char *dot = ".";
1537
1538 for (oo = f->opt; oo; oo = oo->next)
1539 if (strcmp (oo->name, "length") == 0)
1540 length = (const char *)oo->info;
1541 else if (strcmp (oo->name, "maybe_undef") == 0)
1542 maybe_undef_p = 1;
1543 else if (strcmp (oo->name, "tag") == 0)
1544 tagid = (const char *)oo->info;
1545 else if (strcmp (oo->name, "special") == 0)
1546 ;
1547 else if (strcmp (oo->name, "skip") == 0)
1548 skip_p = 1;
1549 else if (strcmp (oo->name, "default") == 0)
1550 default_p = 1;
1551 else if (strcmp (oo->name, "desc") == 0)
1552 ;
1553 else if (strcmp (oo->name, "descbits") == 0)
1554 ;
1555 else if (strcmp (oo->name, "param_is") == 0)
1556 ;
1557 else if (strncmp (oo->name, "use_param", 9) == 0
1558 && (oo->name[9] == '\0' || ISDIGIT (oo->name[9])))
1559 use_param_num = oo->name[9] == '\0' ? 0 : oo->name[9] - '0';
1560 else if (strcmp (oo->name, "use_params") == 0)
1561 use_params_p = 1;
1562 else if (strcmp (oo->name, "dot") == 0)
1563 dot = (const char *)oo->info;
1564 else
1565 error_at_line (&f->line, "unknown field option `%s'\n", oo->name);
1566
1567 if (skip_p)
1568 continue;
1569
1570 if (use_params_p)
1571 {
1572 int pointer_p = t->kind == TYPE_POINTER;
1573
1574 if (pointer_p)
1575 t = t->u.p;
1576 t = find_param_structure (t, param);
1577 if (pointer_p)
1578 t = create_pointer (t);
1579 }
1580
1581 if (use_param_num != -1)
1582 {
1583 if (param != NULL && param[use_param_num] != NULL)
1584 {
1585 type_p nt = param[use_param_num];
1586
1587 if (t->kind == TYPE_ARRAY)
1588 nt = create_array (nt, t->u.a.len);
1589 else if (length != NULL && t->kind == TYPE_POINTER)
1590 nt = create_pointer (nt);
1591 needs_cast_p = (t->kind != TYPE_POINTER
1592 && nt->kind == TYPE_POINTER);
1593 t = nt;
1594 }
1595 else if (s->kind != TYPE_UNION)
1596 error_at_line (&f->line, "no parameter defined");
1597 }
1598
1599 if (t->kind == TYPE_SCALAR
1600 || (t->kind == TYPE_ARRAY
1601 && t->u.a.p->kind == TYPE_SCALAR))
1602 continue;
1603
1604 seen_default |= default_p;
1605
1606 if (maybe_undef_p
1607 && (t->kind != TYPE_POINTER
1608 || t->u.p->kind != TYPE_STRUCT))
1609 error_at_line (&f->line,
1610 "field `%s' has invalid option `maybe_undef_p'\n",
1611 f->name);
1612 if (s->kind == TYPE_UNION)
1613 {
1614 if (tagid)
1615 {
1616 oprintf (of, "%*scase %s:\n", indent, "", tagid);
1617
1618 }
1619 else if (default_p)
1620 {
1621 oprintf (of, "%*sdefault:\n", indent, "");
1622 }
1623 else
1624 {
1625 error_at_line (&f->line, "field `%s' has no tag", f->name);
1626 continue;
1627 }
1628 indent += 2;
1629 }
1630
1631 switch (t->kind)
1632 {
1633 case TYPE_STRING:
1634 /* Do nothing; strings go in the string pool. */
1635 break;
1636
1637 case TYPE_LANG_STRUCT:
1638 {
1639 type_p ti;
1640 for (ti = t->u.s.lang_struct; ti; ti = ti->next)
1641 if (ti->u.s.bitmap & bitmap)
1642 {
1643 t = ti;
1644 break;
1645 }
1646 if (ti == NULL)
1647 {
1648 error_at_line (&f->line,
1649 "structure not defined for this language");
1650 break;
1651 }
1652 }
1653 /* Fall through... */
1654 case TYPE_STRUCT:
1655 case TYPE_UNION:
1656 {
1657 char *newval;
1658
1659 newval = xasprintf ("%s%s%s", val, dot, f->name);
1660 write_gc_structure_fields (of, t, newval, val, f->opt, indent,
1661 &f->line, bitmap, param);
1662 free (newval);
1663 break;
1664 }
1665
1666 case TYPE_POINTER:
1667 if (! length)
1668 {
1669 if (maybe_undef_p
1670 && t->u.p->u.s.line.file == NULL)
1671 oprintf (of, "%*sif (%s%s%s) abort();\n", indent, "",
1672 val, dot, f->name);
1673 else if (UNION_OR_STRUCT_P (t->u.p)
1674 || t->u.p->kind == TYPE_PARAM_STRUCT)
1675 {
1676 oprintf (of, "%*sgt_ggc_m_", indent, "");
1677 output_mangled_typename (of, t->u.p);
1678 oprintf (of, " (");
1679 if (needs_cast_p)
1680 oprintf (of, "(%s %s *)",
1681 UNION_P (t->u.p) ? "union" : "struct",
1682 t->u.p->u.s.tag);
1683 oprintf (of, "%s%s%s);\n", val, dot, f->name);
1684 }
1685 else
1686 error_at_line (&f->line, "field `%s' is pointer to scalar",
1687 f->name);
1688 break;
1689 }
1690 else if (t->u.p->kind == TYPE_SCALAR
1691 || t->u.p->kind == TYPE_STRING)
1692 oprintf (of, "%*sggc_mark (%s%s%s);\n", indent, "",
1693 val, dot, f->name);
1694 else
1695 {
1696 int loopcounter = ++gc_counter;
1697
1698 oprintf (of, "%*sif (%s%s%s != NULL) {\n", indent, "",
1699 val, dot, f->name);
1700 indent += 2;
1701 oprintf (of, "%*ssize_t i%d;\n", indent, "", loopcounter);
1702 oprintf (of, "%*sggc_set_mark (%s%s%s);\n", indent, "",
1703 val, dot, f->name);
1704 oprintf (of, "%*sfor (i%d = 0; i%d < (size_t)(", indent, "",
1705 loopcounter, loopcounter);
1706 output_escaped_param (of, length, val, prev_val, "length", line);
1707 oprintf (of, "); i%d++) {\n", loopcounter);
1708 indent += 2;
1709 switch (t->u.p->kind)
1710 {
1711 case TYPE_STRUCT:
1712 case TYPE_UNION:
1713 {
1714 char *newval;
1715
1716 newval = xasprintf ("%s%s%s[i%d]", val, dot, f->name,
1717 loopcounter);
1718 write_gc_structure_fields (of, t->u.p, newval, val,
1719 f->opt, indent, &f->line,
1720 bitmap, param);
1721 free (newval);
1722 break;
1723 }
1724 case TYPE_POINTER:
1725 if (UNION_OR_STRUCT_P (t->u.p->u.p)
1726 || t->u.p->u.p->kind == TYPE_PARAM_STRUCT)
1727 {
1728 oprintf (of, "%*sgt_ggc_m_", indent, "");
1729 output_mangled_typename (of, t->u.p->u.p);
1730 oprintf (of, " (%s%s%s[i%d]);\n", val, dot, f->name,
1731 loopcounter);
1732 }
1733 else
1734 error_at_line (&f->line,
1735 "field `%s' is array of pointer to scalar",
1736 f->name);
1737 break;
1738 default:
1739 error_at_line (&f->line,
1740 "field `%s' is array of unimplemented type",
1741 f->name);
1742 break;
1743 }
1744 indent -= 2;
1745 oprintf (of, "%*s}\n", indent, "");
1746 indent -= 2;
1747 oprintf (of, "%*s}\n", indent, "");
1748 }
1749 break;
1750
1751 case TYPE_ARRAY:
1752 {
1753 int loopcounter = ++gc_counter;
1754 type_p ta;
1755 int i;
1756
1757 if (! length &&
1758 (strcmp (t->u.a.len, "0") == 0
1759 || strcmp (t->u.a.len, "1") == 0))
1760 error_at_line (&f->line,
1761 "field `%s' is array of size %s",
1762 f->name, t->u.a.len);
1763
1764 /* Arrays of scalars can be ignored. */
1765 for (ta = t; ta->kind == TYPE_ARRAY; ta = ta->u.a.p)
1766 ;
1767 if (ta->kind == TYPE_SCALAR
1768 || ta->kind == TYPE_STRING)
1769 break;
1770
1771 oprintf (of, "%*s{\n", indent, "");
1772 indent += 2;
1773
1774 for (ta = t, i = 0; ta->kind == TYPE_ARRAY; ta = ta->u.a.p, i++)
1775 {
1776 oprintf (of, "%*ssize_t i%d_%d;\n",
1777 indent, "", loopcounter, i);
1778 oprintf (of, "%*sconst size_t ilimit%d_%d = (",
1779 indent, "", loopcounter, i);
1780 if (i == 0 && length != NULL)
1781 output_escaped_param (of, length, val, prev_val,
1782 "length", line);
1783 else
1784 oprintf (of, "%s", ta->u.a.len);
1785 oprintf (of, ");\n");
1786 }
1787
1788 for (ta = t, i = 0; ta->kind == TYPE_ARRAY; ta = ta->u.a.p, i++)
1789 {
1790 oprintf (of,
1791 "%*sfor (i%d_%d = 0; i%d_%d < ilimit%d_%d; i%d_%d++) {\n",
1792 indent, "", loopcounter, i, loopcounter, i,
1793 loopcounter, i, loopcounter, i);
1794 indent += 2;
1795 }
1796
1797 if (ta->kind == TYPE_POINTER
1798 && (UNION_OR_STRUCT_P (ta->u.p)
1799 || ta->u.p->kind == TYPE_PARAM_STRUCT))
1800 {
1801 oprintf (of, "%*sgt_ggc_m_", indent, "");
1802 output_mangled_typename (of, ta->u.p);
1803 oprintf (of, " (%s%s%s", val, dot, f->name);
1804 for (ta = t, i = 0;
1805 ta->kind == TYPE_ARRAY;
1806 ta = ta->u.a.p, i++)
1807 oprintf (of, "[i%d_%d]", loopcounter, i);
1808 oprintf (of, ");\n");
1809 }
1810 else if (ta->kind == TYPE_STRUCT || ta->kind == TYPE_UNION)
1811 {
1812 char *newval;
1813 int len;
1814
1815 len = strlen (val) + strlen (f->name) + 2;
1816 for (ta = t; ta->kind == TYPE_ARRAY; ta = ta->u.a.p)
1817 len += sizeof ("[i_]") + 2*6;
1818
1819 newval = xmalloc (len);
1820 sprintf (newval, "%s%s%s", val, dot, f->name);
1821 for (ta = t, i = 0;
1822 ta->kind == TYPE_ARRAY;
1823 ta = ta->u.a.p, i++)
1824 sprintf (newval + strlen (newval), "[i%d_%d]",
1825 loopcounter, i);
1826 write_gc_structure_fields (of, t->u.p, newval, val,
1827 f->opt, indent, &f->line, bitmap,
1828 param);
1829 free (newval);
1830 }
1831 else if (ta->kind == TYPE_POINTER && ta->u.p->kind == TYPE_SCALAR
1832 && use_param_num != -1 && param == NULL)
1833 oprintf (of, "%*sabort();\n", indent, "");
1834 else
1835 error_at_line (&f->line,
1836 "field `%s' is array of unimplemented type",
1837 f->name);
1838 for (ta = t, i = 0; ta->kind == TYPE_ARRAY; ta = ta->u.a.p, i++)
1839 {
1840 indent -= 2;
1841 oprintf (of, "%*s}\n", indent, "");
1842 }
1843
1844 indent -= 2;
1845 oprintf (of, "%*s}\n", indent, "");
1846 break;
1847 }
1848
1849 default:
1850 error_at_line (&f->line,
1851 "field `%s' is unimplemented type",
1852 f->name);
1853 break;
1854 }
1855
1856 if (s->kind == TYPE_UNION)
1857 {
1858 oprintf (of, "%*sbreak;\n", indent, "");
1859 indent -= 2;
1860 }
1861 }
1862 if (s->kind == TYPE_UNION)
1863 {
1864 if (! seen_default)
1865 {
1866 oprintf (of, "%*sdefault:\n", indent, "");
1867 oprintf (of, "%*s break;\n", indent, "");
1868 }
1869 oprintf (of, "%*s}\n", indent, "");
1870 indent -= 2;
1871 }
1872 }
1873
1874 /* Write out a marker routine for S. PARAM is the parameter from an
1875 enclosing PARAM_IS option. */
1876
1877 static void
1878 write_gc_marker_routine_for_structure (orig_s, s, param)
1879 type_p orig_s;
1880 type_p s;
1881 type_p * param;
1882 {
1883 outf_p f;
1884 const char *fn = s->u.s.line.file;
1885 int i;
1886 const char *chain_next = NULL;
1887 const char *chain_prev = NULL;
1888 options_p opt;
1889
1890 /* This is a hack, and not the good kind either. */
1891 for (i = NUM_PARAM - 1; i >= 0; i--)
1892 if (param && param[i] && param[i]->kind == TYPE_POINTER
1893 && UNION_OR_STRUCT_P (param[i]->u.p))
1894 fn = param[i]->u.p->u.s.line.file;
1895
1896 f = get_output_file_with_visibility (fn);
1897
1898 for (opt = s->u.s.opt; opt; opt = opt->next)
1899 if (strcmp (opt->name, "chain_next") == 0)
1900 chain_next = (const char *) opt->info;
1901 else if (strcmp (opt->name, "chain_prev") == 0)
1902 chain_prev = (const char *) opt->info;
1903
1904 if (chain_prev != NULL && chain_next == NULL)
1905 error_at_line (&s->u.s.line, "chain_prev without chain_next");
1906
1907 oprintf (f, "\n");
1908 oprintf (f, "void\n");
1909 if (param == NULL)
1910 oprintf (f, "gt_ggc_mx_%s", s->u.s.tag);
1911 else
1912 {
1913 oprintf (f, "gt_ggc_m_");
1914 output_mangled_typename (f, orig_s);
1915 }
1916 oprintf (f, " (x_p)\n");
1917 oprintf (f, " void *x_p;\n");
1918 oprintf (f, "{\n");
1919 oprintf (f, " %s %s * %sx = (%s %s *)x_p;\n",
1920 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag,
1921 chain_next == NULL ? "const " : "",
1922 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag);
1923 if (chain_next != NULL)
1924 oprintf (f, " %s %s * xlimit = x;\n",
1925 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag);
1926 if (chain_next == NULL)
1927 oprintf (f, " if (ggc_test_and_set_mark (x))\n");
1928 else
1929 {
1930 oprintf (f, " while (ggc_test_and_set_mark (xlimit))\n");
1931 oprintf (f, " xlimit = (");
1932 output_escaped_param (f, chain_next, "*xlimit", "*xlimit",
1933 "chain_next", &s->u.s.line);
1934 oprintf (f, ");\n");
1935 if (chain_prev != NULL)
1936 {
1937 oprintf (f, " if (x != xlimit)\n");
1938 oprintf (f, " for (;;)\n");
1939 oprintf (f, " {\n");
1940 oprintf (f, " %s %s * const xprev = (",
1941 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag);
1942 output_escaped_param (f, chain_prev, "*x", "*x",
1943 "chain_prev", &s->u.s.line);
1944 oprintf (f, ");\n");
1945 oprintf (f, " if (xprev == NULL) break;\n");
1946 oprintf (f, " x = xprev;\n");
1947 oprintf (f, " ggc_set_mark (xprev);\n");
1948 oprintf (f, " }\n");
1949 }
1950 oprintf (f, " while (x != xlimit)\n");
1951 }
1952 oprintf (f, " {\n");
1953
1954 gc_counter = 0;
1955 write_gc_structure_fields (f, s, "(*x)", "not valid postage",
1956 s->u.s.opt, 6, &s->u.s.line, s->u.s.bitmap,
1957 param);
1958
1959 if (chain_next != NULL)
1960 {
1961 oprintf (f, " x = (");
1962 output_escaped_param (f, chain_next, "*x", "*x",
1963 "chain_next", &s->u.s.line);
1964 oprintf (f, ");\n");
1965 }
1966
1967 oprintf (f, " }\n");
1968 oprintf (f, "}\n");
1969 }
1970
1971 /* Write out marker routines for STRUCTURES and PARAM_STRUCTS. */
1972
1973 static void
1974 write_gc_types (structures, param_structs)
1975 type_p structures;
1976 type_p param_structs;
1977 {
1978 type_p s;
1979
1980 oprintf (header_file, "\n/* GC marker procedures. */\n");
1981 for (s = structures; s; s = s->next)
1982 if (s->gc_used == GC_POINTED_TO
1983 || s->gc_used == GC_MAYBE_POINTED_TO)
1984 {
1985 options_p opt;
1986
1987 if (s->gc_used == GC_MAYBE_POINTED_TO
1988 && s->u.s.line.file == NULL)
1989 continue;
1990
1991 oprintf (header_file, "#define gt_ggc_m_");
1992 output_mangled_typename (header_file, s);
1993 oprintf (header_file, "(X) do { \\\n");
1994 oprintf (header_file,
1995 " if (X != NULL) gt_ggc_mx_%s (X);\\\n", s->u.s.tag);
1996 oprintf (header_file,
1997 " } while (0)\n");
1998
1999 for (opt = s->u.s.opt; opt; opt = opt->next)
2000 if (strcmp (opt->name, "ptr_alias") == 0)
2001 {
2002 type_p t = (type_p) opt->info;
2003 if (t->kind == TYPE_STRUCT
2004 || t->kind == TYPE_UNION
2005 || t->kind == TYPE_LANG_STRUCT)
2006 oprintf (header_file,
2007 "#define gt_ggc_mx_%s gt_ggc_mx_%s\n",
2008 s->u.s.tag, t->u.s.tag);
2009 else
2010 error_at_line (&s->u.s.line,
2011 "structure alias is not a structure");
2012 break;
2013 }
2014 if (opt)
2015 continue;
2016
2017 /* Declare the marker procedure only once. */
2018 oprintf (header_file,
2019 "extern void gt_ggc_mx_%s PARAMS ((void *));\n",
2020 s->u.s.tag);
2021
2022 if (s->u.s.line.file == NULL)
2023 {
2024 fprintf (stderr, "warning: structure `%s' used but not defined\n",
2025 s->u.s.tag);
2026 continue;
2027 }
2028
2029 if (s->kind == TYPE_LANG_STRUCT)
2030 {
2031 type_p ss;
2032 for (ss = s->u.s.lang_struct; ss; ss = ss->next)
2033 write_gc_marker_routine_for_structure (s, ss, NULL);
2034 }
2035 else
2036 write_gc_marker_routine_for_structure (s, s, NULL);
2037 }
2038
2039 for (s = param_structs; s; s = s->next)
2040 if (s->gc_used == GC_POINTED_TO)
2041 {
2042 type_p * param = s->u.param_struct.param;
2043 type_p stru = s->u.param_struct.stru;
2044
2045 /* Declare the marker procedure. */
2046 oprintf (header_file, "extern void gt_ggc_m_");
2047 output_mangled_typename (header_file, s);
2048 oprintf (header_file, " PARAMS ((void *));\n");
2049
2050 if (stru->u.s.line.file == NULL)
2051 {
2052 fprintf (stderr, "warning: structure `%s' used but not defined\n",
2053 s->u.s.tag);
2054 continue;
2055 }
2056
2057 if (stru->kind == TYPE_LANG_STRUCT)
2058 {
2059 type_p ss;
2060 for (ss = stru->u.s.lang_struct; ss; ss = ss->next)
2061 write_gc_marker_routine_for_structure (s, ss, param);
2062 }
2063 else
2064 write_gc_marker_routine_for_structure (s, stru, param);
2065 }
2066 }
2067
2068 /* Write out the 'enum' definition for gt_types_enum. */
2069
2070 static void
2071 write_enum_defn (structures, param_structs)
2072 type_p structures;
2073 type_p param_structs;
2074 {
2075 type_p s;
2076
2077 oprintf (header_file, "\n/* Enumeration of types known. */\n");
2078 oprintf (header_file, "enum gt_types_enum {\n");
2079 for (s = structures; s; s = s->next)
2080 if (s->gc_used == GC_POINTED_TO
2081 || s->gc_used == GC_MAYBE_POINTED_TO)
2082 {
2083 if (s->gc_used == GC_MAYBE_POINTED_TO
2084 && s->u.s.line.file == NULL)
2085 continue;
2086
2087 oprintf (header_file, " gt_ggc_e_");
2088 output_mangled_typename (header_file, s);
2089 oprintf (header_file, ", \n");
2090 }
2091 for (s = param_structs; s; s = s->next)
2092 if (s->gc_used == GC_POINTED_TO)
2093 {
2094 oprintf (header_file, " gt_e_");
2095 output_mangled_typename (header_file, s);
2096 oprintf (header_file, ", \n");
2097 }
2098 oprintf (header_file, " gt_types_enum_last\n");
2099 oprintf (header_file, "};\n");
2100 }
2101
2102
2103 /* Mangle FN and print it to F. */
2104
2105 static void
2106 put_mangled_filename (f, fn)
2107 outf_p f;
2108 const char *fn;
2109 {
2110 const char *name = get_output_file_name (fn);
2111 for (; *name != 0; name++)
2112 if (ISALNUM (*name))
2113 oprintf (f, "%c", *name);
2114 else
2115 oprintf (f, "%c", '_');
2116 }
2117
2118 /* Finish off the currently-created root tables in FLP. PFX, TNAME,
2119 LASTNAME, and NAME are all strings to insert in various places in
2120 the resulting code. */
2121
2122 static void
2123 finish_root_table (flp, pfx, lastname, tname, name)
2124 struct flist *flp;
2125 const char *pfx;
2126 const char *tname;
2127 const char *lastname;
2128 const char *name;
2129 {
2130 struct flist *fli2;
2131 unsigned started_bitmap = 0;
2132
2133 for (fli2 = flp; fli2; fli2 = fli2->next)
2134 if (fli2->started_p)
2135 {
2136 oprintf (fli2->f, " %s\n", lastname);
2137 oprintf (fli2->f, "};\n\n");
2138 }
2139
2140 for (fli2 = flp; fli2; fli2 = fli2->next)
2141 if (fli2->started_p)
2142 {
2143 lang_bitmap bitmap = get_base_file_bitmap (fli2->name);
2144 int fnum;
2145
2146 for (fnum = 0; bitmap != 0; fnum++, bitmap >>= 1)
2147 if (bitmap & 1)
2148 {
2149 oprintf (base_files[fnum],
2150 "extern const struct %s gt_ggc_%s_",
2151 tname, pfx);
2152 put_mangled_filename (base_files[fnum], fli2->name);
2153 oprintf (base_files[fnum], "[];\n");
2154 }
2155 }
2156
2157 for (fli2 = flp; fli2; fli2 = fli2->next)
2158 if (fli2->started_p)
2159 {
2160 lang_bitmap bitmap = get_base_file_bitmap (fli2->name);
2161 int fnum;
2162
2163 fli2->started_p = 0;
2164
2165 for (fnum = 0; bitmap != 0; fnum++, bitmap >>= 1)
2166 if (bitmap & 1)
2167 {
2168 if (! (started_bitmap & (1 << fnum)))
2169 {
2170 oprintf (base_files [fnum],
2171 "const struct %s * const %s[] = {\n",
2172 tname, name);
2173 started_bitmap |= 1 << fnum;
2174 }
2175 oprintf (base_files[fnum], " gt_ggc_%s_", pfx);
2176 put_mangled_filename (base_files[fnum], fli2->name);
2177 oprintf (base_files[fnum], ",\n");
2178 }
2179 }
2180
2181 {
2182 unsigned bitmap;
2183 int fnum;
2184
2185 for (bitmap = started_bitmap, fnum = 0; bitmap != 0; fnum++, bitmap >>= 1)
2186 if (bitmap & 1)
2187 {
2188 oprintf (base_files[fnum], " NULL\n");
2189 oprintf (base_files[fnum], "};\n");
2190 }
2191 }
2192 }
2193
2194 /* Write out to F the table entry and any marker routines needed to
2195 mark NAME as TYPE. The original variable is V, at LINE.
2196 HAS_LENGTH is nonzero iff V was a variable-length array. IF_MARKED
2197 is nonzero iff we are building the root table for hash table caches. */
2198
2199 static void
2200 write_gc_root (f, v, type, name, has_length, line, if_marked)
2201 outf_p f;
2202 pair_p v;
2203 type_p type;
2204 const char *name;
2205 int has_length;
2206 struct fileloc *line;
2207 const char *if_marked;
2208 {
2209 switch (type->kind)
2210 {
2211 case TYPE_STRUCT:
2212 {
2213 pair_p fld;
2214 for (fld = type->u.s.fields; fld; fld = fld->next)
2215 {
2216 int skip_p = 0;
2217 const char *desc = NULL;
2218 options_p o;
2219
2220 for (o = fld->opt; o; o = o->next)
2221 if (strcmp (o->name, "skip") == 0)
2222 skip_p = 1;
2223 else if (strcmp (o->name, "desc") == 0)
2224 desc = (const char *)o->info;
2225 else
2226 error_at_line (line,
2227 "field `%s' of global `%s' has unknown option `%s'",
2228 fld->name, name, o->name);
2229
2230 if (skip_p)
2231 continue;
2232 else if (desc && fld->type->kind == TYPE_UNION)
2233 {
2234 pair_p validf = NULL;
2235 pair_p ufld;
2236
2237 for (ufld = fld->type->u.s.fields; ufld; ufld = ufld->next)
2238 {
2239 const char *tag = NULL;
2240 options_p oo;
2241
2242 for (oo = ufld->opt; oo; oo = oo->next)
2243 if (strcmp (oo->name, "tag") == 0)
2244 tag = (const char *)oo->info;
2245 if (tag == NULL || strcmp (tag, desc) != 0)
2246 continue;
2247 if (validf != NULL)
2248 error_at_line (line,
2249 "both `%s.%s.%s' and `%s.%s.%s' have tag `%s'",
2250 name, fld->name, validf->name,
2251 name, fld->name, ufld->name,
2252 tag);
2253 validf = ufld;
2254 }
2255 if (validf != NULL)
2256 {
2257 char *newname;
2258 newname = xasprintf ("%s.%s.%s",
2259 name, fld->name, validf->name);
2260 write_gc_root (f, v, validf->type, newname, 0, line,
2261 if_marked);
2262 free (newname);
2263 }
2264 }
2265 else if (desc)
2266 error_at_line (line,
2267 "global `%s.%s' has `desc' option but is not union",
2268 name, fld->name);
2269 else
2270 {
2271 char *newname;
2272 newname = xasprintf ("%s.%s", name, fld->name);
2273 write_gc_root (f, v, fld->type, newname, 0, line, if_marked);
2274 free (newname);
2275 }
2276 }
2277 }
2278 break;
2279
2280 case TYPE_ARRAY:
2281 {
2282 char *newname;
2283 newname = xasprintf ("%s[0]", name);
2284 write_gc_root (f, v, type->u.a.p, newname, has_length, line, if_marked);
2285 free (newname);
2286 }
2287 break;
2288
2289 case TYPE_POINTER:
2290 {
2291 type_p ap, tp;
2292
2293 oprintf (f, " {\n");
2294 oprintf (f, " &%s,\n", name);
2295 oprintf (f, " 1");
2296
2297 for (ap = v->type; ap->kind == TYPE_ARRAY; ap = ap->u.a.p)
2298 if (ap->u.a.len[0])
2299 oprintf (f, " * (%s)", ap->u.a.len);
2300 else if (ap == v->type)
2301 oprintf (f, " * ARRAY_SIZE (%s)", v->name);
2302 oprintf (f, ",\n");
2303 oprintf (f, " sizeof (%s", v->name);
2304 for (ap = v->type; ap->kind == TYPE_ARRAY; ap = ap->u.a.p)
2305 oprintf (f, "[0]");
2306 oprintf (f, "),\n");
2307
2308 tp = type->u.p;
2309
2310 if (! has_length && UNION_OR_STRUCT_P (tp))
2311 {
2312 oprintf (f, " &gt_ggc_mx_%s\n", tp->u.s.tag);
2313 }
2314 else if (! has_length && tp->kind == TYPE_PARAM_STRUCT)
2315 {
2316 oprintf (f, " &gt_ggc_m_");
2317 output_mangled_typename (f, tp);
2318 }
2319 else if (has_length
2320 && (tp->kind == TYPE_POINTER || UNION_OR_STRUCT_P (tp)))
2321 {
2322 oprintf (f, " &gt_ggc_ma_%s", name);
2323 }
2324 else
2325 {
2326 error_at_line (line,
2327 "global `%s' is pointer to unimplemented type",
2328 name);
2329 }
2330 if (if_marked)
2331 oprintf (f, ",\n &%s", if_marked);
2332 oprintf (f, "\n },\n");
2333 }
2334 break;
2335
2336 case TYPE_SCALAR:
2337 case TYPE_STRING:
2338 break;
2339
2340 default:
2341 error_at_line (line,
2342 "global `%s' is unimplemented type",
2343 name);
2344 }
2345 }
2346
2347 /* Output a table describing the locations and types of VARIABLES. */
2348
2349 static void
2350 write_gc_roots (variables)
2351 pair_p variables;
2352 {
2353 pair_p v;
2354 struct flist *flp = NULL;
2355
2356 for (v = variables; v; v = v->next)
2357 {
2358 outf_p f = get_output_file_with_visibility (v->line.file);
2359 struct flist *fli;
2360 const char *length = NULL;
2361 int deletable_p = 0;
2362 options_p o;
2363
2364 for (o = v->opt; o; o = o->next)
2365 if (strcmp (o->name, "length") == 0)
2366 length = (const char *)o->info;
2367 else if (strcmp (o->name, "deletable") == 0)
2368 deletable_p = 1;
2369 else if (strcmp (o->name, "param_is") == 0)
2370 ;
2371 else if (strncmp (o->name, "param", 5) == 0
2372 && ISDIGIT (o->name[5])
2373 && strcmp (o->name + 6, "_is") == 0)
2374 ;
2375 else if (strcmp (o->name, "if_marked") == 0)
2376 ;
2377 else
2378 error_at_line (&v->line,
2379 "global `%s' has unknown option `%s'",
2380 v->name, o->name);
2381
2382 for (fli = flp; fli; fli = fli->next)
2383 if (fli->f == f)
2384 break;
2385 if (fli == NULL)
2386 {
2387 fli = xmalloc (sizeof (*fli));
2388 fli->f = f;
2389 fli->next = flp;
2390 fli->started_p = 0;
2391 fli->name = v->line.file;
2392 flp = fli;
2393
2394 oprintf (f, "\n/* GC roots. */\n\n");
2395 }
2396
2397 if (! deletable_p
2398 && length
2399 && v->type->kind == TYPE_POINTER
2400 && (v->type->u.p->kind == TYPE_POINTER
2401 || v->type->u.p->kind == TYPE_STRUCT))
2402 {
2403 oprintf (f, "static void gt_ggc_ma_%s PARAMS ((void *));\n",
2404 v->name);
2405 oprintf (f, "static void\ngt_ggc_ma_%s (x_p)\n void *x_p;\n",
2406 v->name);
2407 oprintf (f, "{\n");
2408 oprintf (f, " size_t i;\n");
2409
2410 if (v->type->u.p->kind == TYPE_POINTER)
2411 {
2412 type_p s = v->type->u.p->u.p;
2413
2414 oprintf (f, " %s %s ** const x = (%s %s **)x_p;\n",
2415 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag,
2416 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag);
2417 oprintf (f, " if (ggc_test_and_set_mark (x))\n");
2418 oprintf (f, " for (i = 0; i < (%s); i++)\n", length);
2419 if (! UNION_OR_STRUCT_P (s)
2420 && ! s->kind == TYPE_PARAM_STRUCT)
2421 {
2422 error_at_line (&v->line,
2423 "global `%s' has unsupported ** type",
2424 v->name);
2425 continue;
2426 }
2427
2428 oprintf (f, " gt_ggc_m_");
2429 output_mangled_typename (f, s);
2430 oprintf (f, " (x[i]);\n");
2431 }
2432 else
2433 {
2434 type_p s = v->type->u.p;
2435
2436 oprintf (f, " %s %s * const x = (%s %s *)x_p;\n",
2437 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag,
2438 s->kind == TYPE_UNION ? "union" : "struct", s->u.s.tag);
2439 oprintf (f, " if (ggc_test_and_set_mark (x))\n");
2440 oprintf (f, " for (i = 0; i < (%s); i++)\n", length);
2441 oprintf (f, " {\n");
2442 write_gc_structure_fields (f, s, "x[i]", "x[i]",
2443 v->opt, 8, &v->line, s->u.s.bitmap,
2444 NULL);
2445 oprintf (f, " }\n");
2446 }
2447
2448 oprintf (f, "}\n\n");
2449 }
2450 }
2451
2452 for (v = variables; v; v = v->next)
2453 {
2454 outf_p f = get_output_file_with_visibility (v->line.file);
2455 struct flist *fli;
2456 int skip_p = 0;
2457 int length_p = 0;
2458 options_p o;
2459
2460 for (o = v->opt; o; o = o->next)
2461 if (strcmp (o->name, "length") == 0)
2462 length_p = 1;
2463 else if (strcmp (o->name, "deletable") == 0
2464 || strcmp (o->name, "if_marked") == 0)
2465 skip_p = 1;
2466
2467 if (skip_p)
2468 continue;
2469
2470 for (fli = flp; fli; fli = fli->next)
2471 if (fli->f == f)
2472 break;
2473 if (! fli->started_p)
2474 {
2475 fli->started_p = 1;
2476
2477 oprintf (f, "const struct ggc_root_tab gt_ggc_r_");
2478 put_mangled_filename (f, v->line.file);
2479 oprintf (f, "[] = {\n");
2480 }
2481
2482 write_gc_root (f, v, v->type, v->name, length_p, &v->line, NULL);
2483 }
2484
2485 finish_root_table (flp, "r", "LAST_GGC_ROOT_TAB", "ggc_root_tab",
2486 "gt_ggc_rtab");
2487
2488 for (v = variables; v; v = v->next)
2489 {
2490 outf_p f = get_output_file_with_visibility (v->line.file);
2491 struct flist *fli;
2492 int skip_p = 1;
2493 options_p o;
2494
2495 for (o = v->opt; o; o = o->next)
2496 if (strcmp (o->name, "deletable") == 0)
2497 skip_p = 0;
2498 else if (strcmp (o->name, "if_marked") == 0)
2499 skip_p = 1;
2500
2501 if (skip_p)
2502 continue;
2503
2504 for (fli = flp; fli; fli = fli->next)
2505 if (fli->f == f)
2506 break;
2507 if (! fli->started_p)
2508 {
2509 fli->started_p = 1;
2510
2511 oprintf (f, "const struct ggc_root_tab gt_ggc_rd_");
2512 put_mangled_filename (f, v->line.file);
2513 oprintf (f, "[] = {\n");
2514 }
2515
2516 oprintf (f, " { &%s, 1, sizeof (%s), NULL },\n",
2517 v->name, v->name);
2518 }
2519
2520 finish_root_table (flp, "rd", "LAST_GGC_ROOT_TAB", "ggc_root_tab",
2521 "gt_ggc_deletable_rtab");
2522
2523 for (v = variables; v; v = v->next)
2524 {
2525 outf_p f = get_output_file_with_visibility (v->line.file);
2526 struct flist *fli;
2527 const char *if_marked = NULL;
2528 int length_p = 0;
2529 options_p o;
2530
2531 for (o = v->opt; o; o = o->next)
2532 if (strcmp (o->name, "length") == 0)
2533 length_p = 1;
2534 else if (strcmp (o->name, "if_marked") == 0)
2535 if_marked = (const char *) o->info;
2536
2537 if (if_marked == NULL)
2538 continue;
2539
2540 if (v->type->kind != TYPE_POINTER
2541 || v->type->u.p->kind != TYPE_PARAM_STRUCT
2542 || v->type->u.p->u.param_struct.stru != find_structure ("htab", 0))
2543 {
2544 error_at_line (&v->line, "if_marked option used but not hash table");
2545 continue;
2546 }
2547
2548 for (fli = flp; fli; fli = fli->next)
2549 if (fli->f == f)
2550 break;
2551 if (! fli->started_p)
2552 {
2553 fli->started_p = 1;
2554
2555 oprintf (f, "const struct ggc_cache_tab gt_ggc_rc_");
2556 put_mangled_filename (f, v->line.file);
2557 oprintf (f, "[] = {\n");
2558 }
2559
2560 write_gc_root (f, v, v->type->u.p->u.param_struct.param[0],
2561 v->name, length_p, &v->line, if_marked);
2562 }
2563
2564 finish_root_table (flp, "rc", "LAST_GGC_CACHE_TAB", "ggc_cache_tab",
2565 "gt_ggc_cache_rtab");
2566 }
2567
2568 \f
2569 extern int main PARAMS ((int argc, char **argv));
2570 int
2571 main(argc, argv)
2572 int argc ATTRIBUTE_UNUSED;
2573 char **argv ATTRIBUTE_UNUSED;
2574 {
2575 unsigned i;
2576 static struct fileloc pos = { __FILE__, __LINE__ };
2577 unsigned j;
2578
2579 gen_rtx_next ();
2580
2581 srcdir_len = strlen (srcdir);
2582
2583 do_scalar_typedef ("CUMULATIVE_ARGS", &pos);
2584 do_scalar_typedef ("REAL_VALUE_TYPE", &pos);
2585 do_scalar_typedef ("uint8", &pos);
2586 do_scalar_typedef ("jword", &pos);
2587 do_scalar_typedef ("JCF_u2", &pos);
2588
2589 do_typedef ("PTR", create_pointer (create_scalar_type ("void",
2590 strlen ("void"))),
2591 &pos);
2592 do_typedef ("HARD_REG_SET", create_array (
2593 create_scalar_type ("unsigned long", strlen ("unsigned long")),
2594 "2"), &pos);
2595
2596 for (i = 0; i < NUM_GT_FILES; i++)
2597 {
2598 int dupflag = 0;
2599 /* Omit if already seen. */
2600 for (j = 0; j < i; j++)
2601 {
2602 if (!strcmp (all_files[i], all_files[j]))
2603 {
2604 dupflag = 1;
2605 break;
2606 }
2607 }
2608 if (!dupflag)
2609 parse_file (all_files[i]);
2610 }
2611
2612 if (hit_error != 0)
2613 exit (1);
2614
2615 set_gc_used (variables);
2616
2617 open_base_files ();
2618 write_enum_defn (structures, param_structs);
2619 write_gc_types (structures, param_structs);
2620 write_gc_roots (variables);
2621 write_rtx_next ();
2622 close_output_files ();
2623
2624 return (hit_error != 0);
2625 }
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