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feaee4bd AC |
1 | /* The IGEN simulator generator for GDB, the GNU Debugger. |
2 | ||
3 | Copyright 2002 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 2 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, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
23 | ||
c906108c SS |
24 | |
25 | ||
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <stdio.h> | |
29 | #include <fcntl.h> | |
30 | #include <ctype.h> | |
31 | ||
32 | #include "config.h" | |
33 | #include "misc.h" | |
34 | #include "lf.h" | |
35 | #include "table.h" | |
36 | ||
37 | #ifdef HAVE_UNISTD_H | |
38 | #include <unistd.h> | |
39 | #endif | |
40 | ||
41 | #ifdef HAVE_STDLIB_H | |
42 | #include <stdlib.h> | |
43 | #endif | |
44 | ||
45 | typedef struct _open_table open_table; | |
46 | struct _open_table { | |
47 | size_t size; | |
48 | char *buffer; | |
49 | char *pos; | |
50 | line_ref pseudo_line; | |
51 | line_ref real_line; | |
52 | open_table *parent; | |
53 | table *root; | |
54 | }; | |
55 | struct _table { | |
56 | open_table *current; | |
57 | }; | |
58 | ||
59 | ||
60 | static line_ref * | |
61 | current_line (open_table *file) | |
62 | { | |
63 | line_ref *entry = ZALLOC (line_ref); | |
64 | *entry = file->pseudo_line; | |
65 | return entry; | |
66 | } | |
67 | ||
68 | static table_entry * | |
69 | new_table_entry (open_table *file, | |
70 | table_entry_type type) | |
71 | { | |
72 | table_entry *entry; | |
73 | entry = ZALLOC (table_entry); | |
74 | entry->file = file->root; | |
75 | entry->line = current_line (file); | |
76 | entry->type = type; | |
77 | return entry; | |
78 | } | |
79 | ||
80 | static void | |
81 | set_nr_table_entry_fields (table_entry *entry, | |
82 | int nr_fields) | |
83 | { | |
84 | entry->field = NZALLOC (char*, nr_fields + 1); | |
85 | entry->nr_fields = nr_fields; | |
86 | } | |
87 | ||
88 | ||
89 | void | |
90 | table_push (table *root, | |
91 | line_ref *line, | |
92 | table_include *includes, | |
93 | const char *file_name) | |
94 | { | |
95 | FILE *ff; | |
96 | open_table *file; | |
97 | table_include dummy; | |
98 | table_include *include = &dummy; | |
99 | ||
100 | /* dummy up a search of this directory */ | |
101 | dummy.next = includes; | |
102 | dummy.dir = ""; | |
103 | ||
104 | /* create a file descriptor */ | |
105 | file = ZALLOC (open_table); | |
106 | if (file == NULL) | |
107 | { | |
108 | perror (file_name); | |
109 | exit (1); | |
110 | } | |
111 | file->root = root; | |
112 | file->parent = root->current; | |
113 | root->current = file; | |
114 | ||
115 | while (1) | |
116 | { | |
117 | /* save the file name */ | |
118 | char *dup_name = NZALLOC (char, strlen (include->dir) + strlen (file_name) + 2); | |
119 | if (dup_name == NULL) | |
120 | { | |
121 | perror (file_name); | |
122 | exit (1); | |
123 | } | |
124 | if (include->dir[0] != '\0') | |
125 | { | |
126 | strcat (dup_name, include->dir); | |
127 | strcat (dup_name, "/"); | |
128 | } | |
129 | strcat (dup_name, file_name); | |
130 | file->real_line.file_name = dup_name; | |
131 | file->pseudo_line.file_name = dup_name; | |
132 | /* open the file */ | |
133 | ||
134 | ff = fopen (dup_name, "rb"); | |
135 | if (ff) | |
136 | break; | |
137 | /* zfree (dup_name); */ | |
138 | if (include->next == NULL) | |
139 | { | |
140 | if (line != NULL) | |
141 | error (line, "Problem opening file `%s'\n", file_name); | |
142 | perror (file_name); | |
143 | exit (1); | |
144 | } | |
145 | include = include->next; | |
146 | } | |
147 | ||
148 | ||
149 | /* determine the size */ | |
150 | fseek (ff, 0, SEEK_END); | |
151 | file->size = ftell (ff); | |
152 | fseek (ff, 0, SEEK_SET); | |
153 | ||
154 | /* allocate this much memory */ | |
155 | file->buffer = (char*) zalloc (file->size + 1); | |
156 | if (file->buffer == NULL) | |
157 | { | |
158 | perror (file_name); | |
159 | exit (1); | |
160 | } | |
161 | file->pos = file->buffer; | |
162 | ||
163 | /* read it all in */ | |
164 | if (fread (file->buffer, 1, file->size, ff) < file->size) { | |
165 | perror (file_name); | |
166 | exit (1); | |
167 | } | |
168 | file->buffer[file->size] = '\0'; | |
169 | ||
170 | /* set the initial line numbering */ | |
171 | file->real_line.line_nr = 1; /* specifies current line */ | |
172 | file->pseudo_line.line_nr = 1; /* specifies current line */ | |
173 | ||
174 | /* done */ | |
175 | fclose (ff); | |
176 | } | |
177 | ||
178 | table * | |
179 | table_open (const char *file_name) | |
180 | { | |
181 | table *root; | |
182 | ||
183 | /* create a file descriptor */ | |
184 | root = ZALLOC (table); | |
185 | if (root == NULL) | |
186 | { | |
187 | perror (file_name); | |
188 | exit (1); | |
189 | } | |
190 | ||
191 | table_push (root, NULL, NULL, file_name); | |
192 | return root; | |
193 | } | |
194 | ||
195 | char * | |
196 | skip_spaces (char *chp) | |
197 | { | |
198 | while (1) | |
199 | { | |
200 | if (*chp == '\0' | |
201 | || *chp == '\n' | |
202 | || !isspace (*chp)) | |
203 | return chp; | |
204 | chp++; | |
205 | } | |
206 | } | |
207 | ||
208 | ||
209 | char * | |
210 | back_spaces (char *start, char *chp) | |
211 | { | |
212 | while (1) | |
213 | { | |
214 | if (chp <= start | |
215 | || !isspace (chp[-1])) | |
216 | return chp; | |
217 | chp--; | |
218 | } | |
219 | } | |
220 | ||
221 | char * | |
222 | skip_digits (char *chp) | |
223 | { | |
224 | while (1) | |
225 | { | |
226 | if (*chp == '\0' | |
227 | || *chp == '\n' | |
228 | || !isdigit (*chp)) | |
229 | return chp; | |
230 | chp++; | |
231 | } | |
232 | } | |
233 | ||
234 | char * | |
235 | skip_to_separator (char *chp, | |
236 | char *separators) | |
237 | { | |
238 | while (1) | |
239 | { | |
240 | char *sep = separators; | |
241 | while (1) | |
242 | { | |
243 | if (*chp == *sep) | |
244 | return chp; | |
245 | if (*sep == '\0') | |
246 | break; | |
247 | sep++; | |
248 | } | |
249 | chp++; | |
250 | } | |
251 | } | |
252 | ||
253 | static char * | |
254 | skip_to_null (char *chp) | |
255 | { | |
256 | return skip_to_separator (chp, ""); | |
257 | } | |
258 | ||
259 | ||
260 | static char * | |
261 | skip_to_nl (char * chp) | |
262 | { | |
263 | return skip_to_separator (chp, "\n"); | |
264 | } | |
265 | ||
266 | ||
267 | static void | |
268 | next_line (open_table *file) | |
269 | { | |
270 | file->pos = skip_to_nl (file->pos); | |
271 | if (*file->pos == '0') | |
272 | error (&file->pseudo_line, "Missing <nl> at end of line\n"); | |
273 | *file->pos = '\0'; | |
274 | file->pos += 1; | |
275 | file->real_line.line_nr += 1; | |
276 | file->pseudo_line.line_nr += 1; | |
277 | } | |
278 | ||
279 | ||
280 | extern table_entry * | |
281 | table_read (table *root) | |
282 | { | |
283 | open_table *file = root->current; | |
284 | table_entry *entry = NULL; | |
285 | while(1) | |
286 | { | |
287 | ||
288 | /* end-of-file? */ | |
289 | while (*file->pos == '\0') | |
290 | { | |
291 | if (file->parent != NULL) | |
292 | { | |
293 | file = file->parent; | |
294 | root->current = file; | |
295 | } | |
296 | else | |
297 | return NULL; | |
298 | } | |
299 | ||
300 | /* code_block? */ | |
301 | if (*file->pos == '{') | |
302 | { | |
303 | char *chp; | |
304 | next_line (file); /* discard leading brace */ | |
305 | entry = new_table_entry (file, table_code_entry); | |
306 | chp = file->pos; | |
307 | /* determine how many lines are involved - look for <nl> "}" */ | |
308 | { | |
309 | int nr_lines = 0; | |
310 | while (*file->pos != '}') | |
311 | { | |
312 | next_line (file); | |
313 | nr_lines++; | |
314 | } | |
315 | set_nr_table_entry_fields (entry, nr_lines); | |
316 | } | |
317 | /* now enter each line */ | |
318 | { | |
319 | int line_nr; | |
320 | for (line_nr = 0; line_nr < entry->nr_fields; line_nr++) | |
321 | { | |
322 | if (strncmp (chp, " ", 2) == 0) | |
323 | entry->field[line_nr] = chp + 2; | |
324 | else | |
325 | entry->field[line_nr] = chp; | |
326 | chp = skip_to_null (chp) + 1; | |
327 | } | |
328 | /* skip trailing brace */ | |
329 | ASSERT (*file->pos == '}'); | |
330 | next_line (file); | |
331 | } | |
332 | break; | |
333 | } | |
334 | ||
335 | /* tab block? */ | |
336 | if (*file->pos == '\t') | |
337 | { | |
338 | char *chp = file->pos; | |
339 | entry = new_table_entry (file, table_code_entry); | |
340 | /* determine how many lines are involved - look for <nl> !<tab> */ | |
341 | { | |
342 | int nr_lines = 0; | |
343 | int nr_blank_lines = 0; | |
344 | while (1) | |
345 | { | |
346 | if (*file->pos == '\t') | |
347 | { | |
348 | nr_lines = nr_lines + nr_blank_lines + 1; | |
349 | nr_blank_lines = 0; | |
350 | next_line (file); | |
351 | } | |
352 | else | |
353 | { | |
354 | file->pos = skip_spaces (file->pos); | |
355 | if (*file->pos != '\n') | |
356 | break; | |
357 | nr_blank_lines++; | |
358 | next_line (file); | |
359 | } | |
360 | } | |
361 | set_nr_table_entry_fields (entry, nr_lines); | |
362 | } | |
363 | /* now enter each line */ | |
364 | { | |
365 | int line_nr; | |
366 | for (line_nr = 0; line_nr < entry->nr_fields; line_nr++) | |
367 | { | |
368 | if (*chp == '\t') | |
369 | entry->field[line_nr] = chp + 1; | |
370 | else | |
371 | entry->field[line_nr] = ""; /* blank */ | |
372 | chp = skip_to_null (chp) + 1; | |
373 | } | |
374 | } | |
375 | break; | |
376 | } | |
377 | ||
378 | /* cpp directive? */ | |
379 | if (file->pos[0] == '#') | |
380 | { | |
381 | char *chp = skip_spaces (file->pos + 1); | |
382 | ||
383 | /* cpp line-nr directive - # <line-nr> "<file>" */ | |
384 | if (isdigit (*chp) | |
385 | && *skip_digits (chp) == ' ' | |
386 | && *skip_spaces (skip_digits (chp)) == '"') | |
387 | { | |
388 | int line_nr; | |
389 | char *file_name; | |
390 | file->pos = chp; | |
391 | /* parse the number */ | |
392 | line_nr = atoi(file->pos) - 1; | |
393 | /* skip to the file name */ | |
394 | while (file->pos[0] != '0' | |
395 | && file->pos[0] != '"' | |
396 | && file->pos[0] != '\0') | |
397 | file->pos++; | |
398 | if (file->pos[0] != '"') | |
399 | error (&file->real_line, "Missing opening quote in cpp directive\n"); | |
400 | /* parse the file name */ | |
401 | file->pos++; | |
402 | file_name = file->pos; | |
403 | while (file->pos[0] != '"' | |
404 | && file->pos[0] != '\0') | |
405 | file->pos++; | |
406 | if (file->pos[0] != '"') | |
407 | error (&file->real_line, "Missing closing quote in cpp directive\n"); | |
408 | file->pos[0] = '\0'; | |
409 | file->pos++; | |
410 | file->pos = skip_to_nl (file->pos); | |
411 | if (file->pos[0] != '\n') | |
412 | error (&file->real_line, "Missing newline in cpp directive\n"); | |
413 | file->pseudo_line.file_name = file_name; | |
414 | file->pseudo_line.line_nr = line_nr; | |
415 | next_line (file); | |
416 | continue; | |
417 | } | |
418 | ||
419 | /* #define and #undef - not implemented yet */ | |
420 | ||
421 | /* Old style # comment */ | |
422 | next_line (file); | |
423 | continue; | |
424 | } | |
425 | ||
426 | /* blank line or end-of-file? */ | |
427 | file->pos = skip_spaces (file->pos); | |
428 | if (*file->pos == '\0') | |
429 | error (&file->pseudo_line, "Missing <nl> at end of file\n"); | |
430 | if (*file->pos == '\n') | |
431 | { | |
432 | next_line (file); | |
433 | continue; | |
434 | } | |
435 | ||
436 | /* comment - leading // or # - skip */ | |
437 | if ((file->pos[0] == '/' && file->pos[1] == '/') | |
438 | || (file->pos[0] == '#')) | |
439 | { | |
440 | next_line (file); | |
441 | continue; | |
442 | } | |
443 | ||
444 | /* colon field */ | |
445 | { | |
446 | char *chp = file->pos; | |
447 | entry = new_table_entry (file, table_colon_entry); | |
448 | next_line (file); | |
449 | /* figure out how many fields */ | |
450 | { | |
451 | int nr_fields = 1; | |
452 | char *tmpch = chp; | |
453 | while (1) | |
454 | { | |
455 | tmpch = skip_to_separator (tmpch, "\\:"); | |
456 | if (*tmpch == '\\') | |
457 | { | |
458 | /* eat the escaped character */ | |
459 | char *cp = tmpch; | |
460 | while (cp[1] != '\0') | |
461 | { | |
462 | cp[0] = cp[1]; | |
463 | cp++; | |
464 | } | |
465 | cp[0] = '\0'; | |
466 | tmpch++; | |
467 | } | |
468 | else if (*tmpch != ':') | |
469 | break; | |
470 | else | |
471 | { | |
472 | *tmpch = '\0'; | |
473 | tmpch++; | |
474 | nr_fields++; | |
475 | } | |
476 | } | |
477 | set_nr_table_entry_fields (entry, nr_fields); | |
478 | } | |
479 | /* now parse them */ | |
480 | { | |
481 | int field_nr; | |
482 | for (field_nr = 0; field_nr < entry->nr_fields; field_nr++) | |
483 | { | |
484 | chp = skip_spaces (chp); | |
485 | entry->field[field_nr] = chp; | |
486 | chp = skip_to_null (chp); | |
487 | *back_spaces (entry->field[field_nr], chp) = '\0'; | |
488 | chp++; | |
489 | } | |
490 | } | |
491 | break; | |
492 | } | |
493 | ||
494 | } | |
495 | ||
496 | ASSERT (entry == NULL || entry->field[entry->nr_fields] == NULL); | |
497 | return entry; | |
498 | } | |
499 | ||
500 | extern void | |
501 | table_print_code (lf *file, | |
502 | table_entry *entry) | |
503 | { | |
504 | int field_nr; | |
505 | int nr = 0; | |
506 | for (field_nr = 0; | |
507 | field_nr < entry->nr_fields; | |
508 | field_nr++) | |
509 | { | |
510 | char *chp = entry->field[field_nr]; | |
511 | int in_bit_field = 0; | |
512 | if (*chp == '#') | |
513 | lf_indent_suppress(file); | |
514 | while (*chp != '\0') | |
515 | { | |
516 | if (chp[0] == '{' | |
517 | && !isspace(chp[1]) | |
518 | && chp[1] != '\0') | |
519 | { | |
520 | in_bit_field = 1; | |
521 | nr += lf_putchr(file, '_'); | |
522 | } | |
523 | else if (in_bit_field && chp[0] == ':') | |
524 | { | |
525 | nr += lf_putchr(file, '_'); | |
526 | } | |
527 | else if (in_bit_field && *chp == '}') | |
528 | { | |
529 | nr += lf_putchr(file, '_'); | |
530 | in_bit_field = 0; | |
531 | } | |
532 | else | |
533 | { | |
534 | nr += lf_putchr(file, *chp); | |
535 | } | |
536 | chp++; | |
537 | } | |
538 | if (in_bit_field) | |
539 | { | |
540 | line_ref line = *entry->line; | |
541 | line.line_nr += field_nr; | |
542 | error (&line, "Bit field brace miss match\n"); | |
543 | } | |
544 | nr += lf_putchr(file, '\n'); | |
545 | } | |
546 | } | |
547 | ||
548 | ||
549 | ||
550 | void | |
551 | dump_line_ref (lf *file, | |
552 | char *prefix, | |
553 | const line_ref *line, | |
554 | char *suffix) | |
555 | { | |
556 | lf_printf (file, "%s(line_ref*) 0x%lx", prefix, (long) line); | |
557 | if (line != NULL) | |
558 | { | |
559 | lf_indent (file, +1); | |
560 | lf_printf (file, "\n(line_nr %d)", line->line_nr); | |
561 | lf_printf (file, "\n(file_name %s)", line->file_name); | |
562 | lf_indent (file, -1); | |
563 | } | |
564 | lf_printf (file, "%s", suffix); | |
565 | } | |
566 | ||
567 | ||
568 | static const char * | |
569 | table_entry_type_to_str (table_entry_type type) | |
570 | { | |
571 | switch (type) | |
572 | { | |
573 | case table_code_entry: return "code-entry"; | |
574 | case table_colon_entry: return "colon-entry"; | |
575 | } | |
576 | return "*invalid*"; | |
577 | } | |
578 | ||
579 | void | |
580 | dump_table_entry(lf *file, | |
581 | char *prefix, | |
582 | const table_entry *entry, | |
583 | char *suffix) | |
584 | { | |
585 | lf_printf (file, "%s(table_entry*) 0x%lx", prefix, (long) entry); | |
586 | if (entry != NULL) | |
587 | { | |
588 | int field; | |
589 | lf_indent (file, +1); | |
590 | dump_line_ref (file, "\n(line ", entry->line, ")"); | |
591 | lf_printf (file, "\n(type %s)", table_entry_type_to_str (entry->type)); | |
592 | lf_printf (file, "\n(nr_fields %d)", entry->nr_fields); | |
593 | lf_printf (file, "\n(fields"); | |
594 | lf_indent (file, +1); | |
595 | for (field = 0; field < entry->nr_fields; field++) | |
596 | lf_printf (file, "\n\"%s\"", entry->field[field]); | |
597 | lf_indent (file, -1); | |
598 | lf_printf (file, ")"); | |
599 | lf_indent (file, -1); | |
600 | } | |
601 | lf_printf (file, "%s", suffix); | |
602 | } | |
603 | ||
604 | ||
605 | #ifdef MAIN | |
606 | int | |
607 | main(int argc, char **argv) | |
608 | { | |
609 | table *t; | |
610 | table_entry *entry; | |
611 | lf *l; | |
612 | int line_nr; | |
613 | ||
614 | if (argc != 2) | |
615 | { | |
616 | printf("Usage: table <file>\n"); | |
617 | exit (1); | |
618 | } | |
619 | ||
620 | t = table_open (argv[1]); | |
621 | l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-table"); | |
622 | ||
623 | line_nr = 0; | |
624 | do | |
625 | { | |
626 | char line[10]; | |
627 | entry = table_read (t); | |
628 | line_nr ++; | |
629 | sprintf (line, "(%d ", line_nr); | |
630 | dump_table_entry (l, line, entry, ")\n"); | |
631 | } | |
632 | while (entry != NULL); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | #endif |