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1 | /* The IGEN simulator generator for GDB, the GNU Debugger. | |
2 | ||
3 | Copyright 2002-2024 Free Software Foundation, Inc. | |
4 | ||
5 | Contributed by Andrew Cagney. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | ||
23 | ||
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <stdio.h> | |
27 | #include <fcntl.h> | |
28 | #include <ctype.h> | |
29 | ||
30 | #include "misc.h" | |
31 | #include "lf.h" | |
32 | #include "table.h" | |
33 | ||
34 | #include <unistd.h> | |
35 | #include <stdlib.h> | |
36 | ||
37 | typedef struct _open_table open_table; | |
38 | struct _open_table | |
39 | { | |
40 | size_t size; | |
41 | char *buffer; | |
42 | char *pos; | |
43 | line_ref pseudo_line; | |
44 | line_ref real_line; | |
45 | open_table *parent; | |
46 | table *root; | |
47 | }; | |
48 | struct _table | |
49 | { | |
50 | open_table *current; | |
51 | }; | |
52 | ||
53 | ||
54 | static line_ref * | |
55 | current_line (open_table * file) | |
56 | { | |
57 | line_ref *entry = ZALLOC (line_ref); | |
58 | *entry = file->pseudo_line; | |
59 | return entry; | |
60 | } | |
61 | ||
62 | static table_entry * | |
63 | new_table_entry (open_table * file, table_entry_type type) | |
64 | { | |
65 | table_entry *entry; | |
66 | entry = ZALLOC (table_entry); | |
67 | entry->file = file->root; | |
68 | entry->line = current_line (file); | |
69 | entry->type = type; | |
70 | return entry; | |
71 | } | |
72 | ||
73 | static void | |
74 | set_nr_table_entry_fields (table_entry *entry, int nr_fields) | |
75 | { | |
76 | entry->field = NZALLOC (char *, nr_fields + 1); | |
77 | entry->nr_fields = nr_fields; | |
78 | } | |
79 | ||
80 | ||
81 | void | |
82 | table_push (table *root, | |
83 | const line_ref *line, | |
84 | table_include *includes, | |
85 | const char *file_name) | |
86 | { | |
87 | FILE *ff; | |
88 | open_table *file; | |
89 | table_include dummy; | |
90 | table_include *include = &dummy; | |
91 | ||
92 | /* dummy up a search of this directory */ | |
93 | dummy.next = includes; | |
94 | dummy.dir = ""; | |
95 | ||
96 | /* create a file descriptor */ | |
97 | file = ZALLOC (open_table); | |
98 | if (file == NULL) | |
99 | { | |
100 | perror (file_name); | |
101 | exit (1); | |
102 | } | |
103 | file->root = root; | |
104 | file->parent = root->current; | |
105 | root->current = file; | |
106 | ||
107 | while (1) | |
108 | { | |
109 | /* save the file name */ | |
110 | char *dup_name = | |
111 | NZALLOC (char, strlen (include->dir) + strlen (file_name) + 2); | |
112 | if (dup_name == NULL) | |
113 | { | |
114 | perror (file_name); | |
115 | exit (1); | |
116 | } | |
117 | if (include->dir[0] != '\0') | |
118 | { | |
119 | strcat (dup_name, include->dir); | |
120 | strcat (dup_name, "/"); | |
121 | } | |
122 | strcat (dup_name, file_name); | |
123 | file->real_line.file_name = dup_name; | |
124 | file->pseudo_line.file_name = dup_name; | |
125 | /* open the file */ | |
126 | ||
127 | ff = fopen (dup_name, "rb"); | |
128 | if (ff) | |
129 | break; | |
130 | /* free (dup_name); */ | |
131 | if (include->next == NULL) | |
132 | { | |
133 | if (line != NULL) | |
134 | error (line, "Problem opening file `%s'\n", file_name); | |
135 | perror (file_name); | |
136 | exit (1); | |
137 | } | |
138 | include = include->next; | |
139 | } | |
140 | ||
141 | ||
142 | /* determine the size */ | |
143 | fseek (ff, 0, SEEK_END); | |
144 | file->size = ftell (ff); | |
145 | fseek (ff, 0, SEEK_SET); | |
146 | ||
147 | /* allocate this much memory */ | |
148 | file->buffer = (char *) zalloc (file->size + 1); | |
149 | if (file->buffer == NULL) | |
150 | { | |
151 | perror (file_name); | |
152 | exit (1); | |
153 | } | |
154 | file->pos = file->buffer; | |
155 | ||
156 | /* read it all in */ | |
157 | if (fread (file->buffer, 1, file->size, ff) < file->size) | |
158 | { | |
159 | perror (file_name); | |
160 | exit (1); | |
161 | } | |
162 | file->buffer[file->size] = '\0'; | |
163 | ||
164 | /* set the initial line numbering */ | |
165 | file->real_line.line_nr = 1; /* specifies current line */ | |
166 | file->pseudo_line.line_nr = 1; /* specifies current line */ | |
167 | ||
168 | /* done */ | |
169 | fclose (ff); | |
170 | } | |
171 | ||
172 | table * | |
173 | table_open (const char *file_name) | |
174 | { | |
175 | table *root; | |
176 | ||
177 | /* create a file descriptor */ | |
178 | root = ZALLOC (table); | |
179 | if (root == NULL) | |
180 | { | |
181 | perror (file_name); | |
182 | exit (1); | |
183 | } | |
184 | ||
185 | table_push (root, NULL, NULL, file_name); | |
186 | return root; | |
187 | } | |
188 | ||
189 | char * | |
190 | skip_spaces (char *chp) | |
191 | { | |
192 | while (1) | |
193 | { | |
194 | if (*chp == '\0' || *chp == '\n' || !isspace (*chp)) | |
195 | return chp; | |
196 | chp++; | |
197 | } | |
198 | } | |
199 | ||
200 | ||
201 | char * | |
202 | back_spaces (char *start, char *chp) | |
203 | { | |
204 | while (1) | |
205 | { | |
206 | if (chp <= start || !isspace (chp[-1])) | |
207 | return chp; | |
208 | chp--; | |
209 | } | |
210 | } | |
211 | ||
212 | char * | |
213 | skip_digits (char *chp) | |
214 | { | |
215 | while (1) | |
216 | { | |
217 | if (*chp == '\0' || *chp == '\n' || !isdigit (*chp)) | |
218 | return chp; | |
219 | chp++; | |
220 | } | |
221 | } | |
222 | ||
223 | char * | |
224 | skip_to_separator (char *chp, char *separators) | |
225 | { | |
226 | while (1) | |
227 | { | |
228 | char *sep = separators; | |
229 | while (1) | |
230 | { | |
231 | if (*chp == *sep) | |
232 | return chp; | |
233 | if (*sep == '\0') | |
234 | break; | |
235 | sep++; | |
236 | } | |
237 | chp++; | |
238 | } | |
239 | } | |
240 | ||
241 | static char * | |
242 | skip_to_null (char *chp) | |
243 | { | |
244 | return skip_to_separator (chp, ""); | |
245 | } | |
246 | ||
247 | ||
248 | static char * | |
249 | skip_to_nl (char *chp) | |
250 | { | |
251 | return skip_to_separator (chp, "\n"); | |
252 | } | |
253 | ||
254 | ||
255 | static void | |
256 | next_line (open_table * file) | |
257 | { | |
258 | file->pos = skip_to_nl (file->pos); | |
259 | if (*file->pos == '0') | |
260 | error (&file->pseudo_line, "Missing <nl> at end of line\n"); | |
261 | *file->pos = '\0'; | |
262 | file->pos += 1; | |
263 | file->real_line.line_nr += 1; | |
264 | file->pseudo_line.line_nr += 1; | |
265 | } | |
266 | ||
267 | ||
268 | extern table_entry * | |
269 | table_read (table *root) | |
270 | { | |
271 | open_table *file = root->current; | |
272 | table_entry *entry = NULL; | |
273 | while (1) | |
274 | { | |
275 | ||
276 | /* end-of-file? */ | |
277 | while (*file->pos == '\0') | |
278 | { | |
279 | if (file->parent != NULL) | |
280 | { | |
281 | file = file->parent; | |
282 | root->current = file; | |
283 | } | |
284 | else | |
285 | return NULL; | |
286 | } | |
287 | ||
288 | /* code_block? */ | |
289 | if (*file->pos == '{') | |
290 | { | |
291 | char *chp; | |
292 | next_line (file); /* discard leading brace */ | |
293 | entry = new_table_entry (file, table_code_entry); | |
294 | chp = file->pos; | |
295 | /* determine how many lines are involved - look for <nl> "}" */ | |
296 | { | |
297 | int nr_lines = 0; | |
298 | while (*file->pos != '}') | |
299 | { | |
300 | next_line (file); | |
301 | nr_lines++; | |
302 | } | |
303 | set_nr_table_entry_fields (entry, nr_lines); | |
304 | } | |
305 | /* now enter each line */ | |
306 | { | |
307 | int line_nr; | |
308 | for (line_nr = 0; line_nr < entry->nr_fields; line_nr++) | |
309 | { | |
310 | if (strncmp (chp, " ", 2) == 0) | |
311 | entry->field[line_nr] = chp + 2; | |
312 | else | |
313 | entry->field[line_nr] = chp; | |
314 | chp = skip_to_null (chp) + 1; | |
315 | } | |
316 | /* skip trailing brace */ | |
317 | ASSERT (*file->pos == '}'); | |
318 | next_line (file); | |
319 | } | |
320 | break; | |
321 | } | |
322 | ||
323 | /* tab block? */ | |
324 | if (*file->pos == '\t') | |
325 | { | |
326 | char *chp = file->pos; | |
327 | entry = new_table_entry (file, table_code_entry); | |
328 | /* determine how many lines are involved - look for <nl> !<tab> */ | |
329 | { | |
330 | int nr_lines = 0; | |
331 | int nr_blank_lines = 0; | |
332 | while (1) | |
333 | { | |
334 | if (*file->pos == '\t') | |
335 | { | |
336 | nr_lines = nr_lines + nr_blank_lines + 1; | |
337 | nr_blank_lines = 0; | |
338 | next_line (file); | |
339 | } | |
340 | else | |
341 | { | |
342 | file->pos = skip_spaces (file->pos); | |
343 | if (*file->pos != '\n') | |
344 | break; | |
345 | nr_blank_lines++; | |
346 | next_line (file); | |
347 | } | |
348 | } | |
349 | set_nr_table_entry_fields (entry, nr_lines); | |
350 | } | |
351 | /* now enter each line */ | |
352 | { | |
353 | int line_nr; | |
354 | for (line_nr = 0; line_nr < entry->nr_fields; line_nr++) | |
355 | { | |
356 | if (*chp == '\t') | |
357 | entry->field[line_nr] = chp + 1; | |
358 | else | |
359 | entry->field[line_nr] = ""; /* blank */ | |
360 | chp = skip_to_null (chp) + 1; | |
361 | } | |
362 | } | |
363 | break; | |
364 | } | |
365 | ||
366 | /* cpp directive? */ | |
367 | if (file->pos[0] == '#') | |
368 | { | |
369 | char *chp = skip_spaces (file->pos + 1); | |
370 | ||
371 | /* cpp line-nr directive - # <line-nr> "<file>" */ | |
372 | if (isdigit (*chp) | |
373 | && *skip_digits (chp) == ' ' | |
374 | && *skip_spaces (skip_digits (chp)) == '"') | |
375 | { | |
376 | int line_nr; | |
377 | char *file_name; | |
378 | file->pos = chp; | |
379 | /* parse the number */ | |
380 | line_nr = atoi (file->pos) - 1; | |
381 | /* skip to the file name */ | |
382 | while (file->pos[0] != '0' | |
383 | && file->pos[0] != '"' && file->pos[0] != '\0') | |
384 | file->pos++; | |
385 | if (file->pos[0] != '"') | |
386 | error (&file->real_line, | |
387 | "Missing opening quote in cpp directive\n"); | |
388 | /* parse the file name */ | |
389 | file->pos++; | |
390 | file_name = file->pos; | |
391 | while (file->pos[0] != '"' && file->pos[0] != '\0') | |
392 | file->pos++; | |
393 | if (file->pos[0] != '"') | |
394 | error (&file->real_line, | |
395 | "Missing closing quote in cpp directive\n"); | |
396 | file->pos[0] = '\0'; | |
397 | file->pos++; | |
398 | file->pos = skip_to_nl (file->pos); | |
399 | if (file->pos[0] != '\n') | |
400 | error (&file->real_line, | |
401 | "Missing newline in cpp directive\n"); | |
402 | file->pseudo_line.file_name = file_name; | |
403 | file->pseudo_line.line_nr = line_nr; | |
404 | next_line (file); | |
405 | continue; | |
406 | } | |
407 | ||
408 | /* #define and #undef - not implemented yet */ | |
409 | ||
410 | /* Old style # comment */ | |
411 | next_line (file); | |
412 | continue; | |
413 | } | |
414 | ||
415 | /* blank line or end-of-file? */ | |
416 | file->pos = skip_spaces (file->pos); | |
417 | if (*file->pos == '\0') | |
418 | error (&file->pseudo_line, "Missing <nl> at end of file\n"); | |
419 | if (*file->pos == '\n') | |
420 | { | |
421 | next_line (file); | |
422 | continue; | |
423 | } | |
424 | ||
425 | /* comment - leading // or # - skip */ | |
426 | if ((file->pos[0] == '/' && file->pos[1] == '/') | |
427 | || (file->pos[0] == '#')) | |
428 | { | |
429 | next_line (file); | |
430 | continue; | |
431 | } | |
432 | ||
433 | /* colon field */ | |
434 | { | |
435 | char *chp = file->pos; | |
436 | entry = new_table_entry (file, table_colon_entry); | |
437 | next_line (file); | |
438 | /* figure out how many fields */ | |
439 | { | |
440 | int nr_fields = 1; | |
441 | char *tmpch = chp; | |
442 | while (1) | |
443 | { | |
444 | tmpch = skip_to_separator (tmpch, "\\:"); | |
445 | if (*tmpch == '\\') | |
446 | { | |
447 | /* eat the escaped character */ | |
448 | char *cp = tmpch; | |
449 | while (cp[1] != '\0') | |
450 | { | |
451 | cp[0] = cp[1]; | |
452 | cp++; | |
453 | } | |
454 | cp[0] = '\0'; | |
455 | tmpch++; | |
456 | } | |
457 | else if (*tmpch != ':') | |
458 | break; | |
459 | else | |
460 | { | |
461 | *tmpch = '\0'; | |
462 | tmpch++; | |
463 | nr_fields++; | |
464 | } | |
465 | } | |
466 | set_nr_table_entry_fields (entry, nr_fields); | |
467 | } | |
468 | /* now parse them */ | |
469 | { | |
470 | int field_nr; | |
471 | for (field_nr = 0; field_nr < entry->nr_fields; field_nr++) | |
472 | { | |
473 | chp = skip_spaces (chp); | |
474 | entry->field[field_nr] = chp; | |
475 | chp = skip_to_null (chp); | |
476 | *back_spaces (entry->field[field_nr], chp) = '\0'; | |
477 | chp++; | |
478 | } | |
479 | } | |
480 | break; | |
481 | } | |
482 | ||
483 | } | |
484 | ||
485 | ASSERT (entry == NULL || entry->field[entry->nr_fields] == NULL); | |
486 | return entry; | |
487 | } | |
488 | ||
489 | extern void | |
490 | table_print_code (lf *file, const table_entry *entry) | |
491 | { | |
492 | int field_nr; | |
493 | for (field_nr = 0; field_nr < entry->nr_fields; field_nr++) | |
494 | { | |
495 | char *chp = entry->field[field_nr]; | |
496 | int in_bit_field = 0; | |
497 | if (*chp == '#') | |
498 | lf_indent_suppress (file); | |
499 | while (*chp != '\0') | |
500 | { | |
501 | if (chp[0] == '{' && !isspace (chp[1]) && chp[1] != '\0') | |
502 | { | |
503 | in_bit_field = 1; | |
504 | lf_putchr (file, '_'); | |
505 | } | |
506 | else if (in_bit_field && chp[0] == ':') | |
507 | { | |
508 | lf_putchr (file, '_'); | |
509 | } | |
510 | else if (in_bit_field && *chp == '}') | |
511 | { | |
512 | lf_putchr (file, '_'); | |
513 | in_bit_field = 0; | |
514 | } | |
515 | else | |
516 | { | |
517 | lf_putchr (file, *chp); | |
518 | } | |
519 | chp++; | |
520 | } | |
521 | if (in_bit_field) | |
522 | { | |
523 | line_ref line = *entry->line; | |
524 | line.line_nr += field_nr; | |
525 | error (&line, "Bit field brace miss match\n"); | |
526 | } | |
527 | lf_putchr (file, '\n'); | |
528 | } | |
529 | } | |
530 | ||
531 | ||
532 | void | |
533 | dump_line_ref (lf *file, | |
534 | const char *prefix, | |
535 | const line_ref *line, | |
536 | const char *suffix) | |
537 | { | |
538 | lf_printf (file, "%s(line_ref*) %p", prefix, line); | |
539 | if (line != NULL) | |
540 | { | |
541 | lf_indent (file, +1); | |
542 | lf_printf (file, "\n(line_nr %d)", line->line_nr); | |
543 | lf_printf (file, "\n(file_name %s)", line->file_name); | |
544 | lf_indent (file, -1); | |
545 | } | |
546 | lf_printf (file, "%s", suffix); | |
547 | } | |
548 | ||
549 | ||
550 | static const char * | |
551 | table_entry_type_to_str (table_entry_type type) | |
552 | { | |
553 | switch (type) | |
554 | { | |
555 | case table_code_entry: | |
556 | return "code-entry"; | |
557 | case table_colon_entry: | |
558 | return "colon-entry"; | |
559 | } | |
560 | return "*invalid*"; | |
561 | } | |
562 | ||
563 | void | |
564 | dump_table_entry (lf *file, | |
565 | const char *prefix, | |
566 | const table_entry *entry, | |
567 | const char *suffix) | |
568 | { | |
569 | lf_printf (file, "%s(table_entry*) %p", prefix, entry); | |
570 | if (entry != NULL) | |
571 | { | |
572 | int field; | |
573 | lf_indent (file, +1); | |
574 | dump_line_ref (file, "\n(line ", entry->line, ")"); | |
575 | lf_printf (file, "\n(type %s)", table_entry_type_to_str (entry->type)); | |
576 | lf_printf (file, "\n(nr_fields %d)", entry->nr_fields); | |
577 | lf_printf (file, "\n(fields"); | |
578 | lf_indent (file, +1); | |
579 | for (field = 0; field < entry->nr_fields; field++) | |
580 | lf_printf (file, "\n\"%s\"", entry->field[field]); | |
581 | lf_indent (file, -1); | |
582 | lf_printf (file, ")"); | |
583 | lf_indent (file, -1); | |
584 | } | |
585 | lf_printf (file, "%s", suffix); | |
586 | } | |
587 | ||
588 | ||
589 | #ifdef MAIN | |
590 | int | |
591 | main (int argc, char **argv) | |
592 | { | |
593 | table *t; | |
594 | table_entry *entry; | |
595 | lf *l; | |
596 | int line_nr; | |
597 | ||
598 | if (argc != 2) | |
599 | { | |
600 | printf ("Usage: table <file>\n"); | |
601 | exit (1); | |
602 | } | |
603 | ||
604 | t = table_open (argv[1]); | |
605 | l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-table"); | |
606 | ||
607 | line_nr = 0; | |
608 | do | |
609 | { | |
610 | char line[10]; | |
611 | entry = table_read (t); | |
612 | line_nr++; | |
613 | sprintf (line, "(%d ", line_nr); | |
614 | dump_table_entry (l, line, entry, ")\n"); | |
615 | } | |
616 | while (entry != NULL); | |
617 | ||
618 | return 0; | |
619 | } | |
620 | #endif |