/[gxemul]/upstream/0.3.1/src/emul_parse.c
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Contents of /upstream/0.3.1/src/emul_parse.c

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Revision 3 - (show annotations)
Mon Oct 8 16:17:52 2007 UTC (16 years, 7 months ago) by dpavlin
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0.3.1
1 /*
2 * Copyright (C) 2005 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: emul_parse.c,v 1.29 2005/03/14 19:14:04 debug Exp $
29 *
30 * Set up an emulation by parsing a config file.
31 *
32 *
33 * TODO: This could be extended to support XML config files as well, but
34 * XML is ugly.
35 */
36
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <string.h>
40
41 #include "diskimage.h"
42 #include "emul.h"
43 #include "machine.h"
44 #include "misc.h"
45 #include "net.h"
46
47
48 #define is_word_char(ch) ( \
49 (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || \
50 ch == '_' || ch == '$' || (ch >= '0' && ch <= '9') )
51
52
53 #define EXPECT_WORD 1
54 #define EXPECT_LEFT_PARENTHESIS 2
55 #define EXPECT_RIGHT_PARENTHESIS 4
56
57
58 /*
59 * read_one_word():
60 *
61 * Reads the file f until it has read a complete word. Whitespace is ignored,
62 * and also any exclamation mark ('!') and anything following an exclamation
63 * mark on a line.
64 *
65 * Used internally by emul_parse_config().
66 */
67 static void read_one_word(FILE *f, char *buf, int buflen, int *line,
68 int expect)
69 {
70 int ch;
71 int done = 0;
72 int curlen = 0;
73 int in_word = 0;
74
75 while (!done) {
76 if (curlen >= buflen - 1)
77 break;
78
79 ch = fgetc(f);
80 if (ch == EOF)
81 break;
82
83 if (in_word) {
84 if (is_word_char(ch)) {
85 buf[curlen++] = ch;
86 if (curlen == buflen - 1)
87 done = 1;
88 continue;
89 } else {
90 if (ungetc(ch, f) == EOF) {
91 fatal("ungetc() failed?\n");
92 exit(1);
93 }
94 break;
95 }
96 }
97
98 if (ch == '\n') {
99 (*line) ++;
100 continue;
101 }
102
103 if (ch == '\r')
104 continue;
105
106 if (ch == '!') {
107 /* Skip until newline: */
108 while (ch != '\n' && ch != EOF)
109 ch = fgetc(f);
110 if (ch == '\n')
111 (*line) ++;
112 continue;
113 }
114
115 if (ch == '{') {
116 int depth = 1;
117
118 /* Skip until '}': */
119 while (depth > 0) {
120 ch = fgetc(f);
121 if (ch == '\n')
122 (*line) ++;
123 if (ch == '{')
124 depth ++;
125 if (ch == '}')
126 depth --;
127 if (ch == EOF) {
128 fatal("line %i: unexpected EOF inside"
129 " a nested comment\n", *line);
130 exit(1);
131 }
132 }
133 continue;
134 }
135
136 /* Whitespace? */
137 if (ch <= ' ')
138 continue;
139
140 if (ch == '"' || ch == '\'') {
141 /* This is a quoted word. */
142 int start_ch = ch;
143
144 if (expect & EXPECT_LEFT_PARENTHESIS) {
145 fatal("unexpected character '%c', line %i\n",
146 ch, *line);
147 exit(1);
148 }
149
150 while (curlen < buflen - 1) {
151 ch = fgetc(f);
152 if (ch == '\n') {
153 fatal("line %i: newline inside"
154 " quotes?\n", *line);
155 exit(1);
156 }
157 if (ch == EOF) {
158 fatal("line %i: EOF inside a quoted"
159 " string?\n", *line);
160 exit(1);
161 }
162 if (ch == start_ch)
163 break;
164 buf[curlen++] = ch;
165 }
166 break;
167 }
168
169 if ((expect & EXPECT_WORD) && is_word_char(ch)) {
170 buf[curlen++] = ch;
171 in_word = 1;
172 if (curlen == buflen - 1)
173 done = 1;
174 } else {
175 if ((expect & EXPECT_LEFT_PARENTHESIS) && ch == '(') {
176 buf[curlen++] = ch;
177 break;
178 }
179 if ((expect & EXPECT_RIGHT_PARENTHESIS) && ch == ')') {
180 buf[curlen++] = ch;
181 break;
182 }
183
184 fatal("unexpected character '%c', line %i\n",
185 ch, *line);
186 exit(1);
187 }
188 }
189
190 buf[curlen] = '\0';
191 }
192
193
194 #define PARSESTATE_NONE 0
195 #define PARSESTATE_EMUL 1
196 #define PARSESTATE_NET 2
197 #define PARSESTATE_MACHINE 3
198
199 static char cur_net_ipv4net[50];
200 static char cur_net_ipv4len[50];
201
202 static char cur_machine_name[50];
203 static char cur_machine_cpu[50];
204 static char cur_machine_type[50];
205 static char cur_machine_subtype[50];
206 static char cur_machine_bootname[150];
207 static char cur_machine_bootarg[250];
208 static char cur_machine_slowsi[10];
209 static char cur_machine_debugger_on_badaddr[10];
210 static char cur_machine_prom_emulation[10];
211 static char cur_machine_use_x11[10];
212 static char cur_machine_x11_scaledown[10];
213 static char cur_machine_bintrans[10];
214 static char cur_machine_old_bintrans[10];
215 static char cur_machine_bintrans_size[10];
216 static char cur_machine_byte_order[20];
217 static char cur_machine_random_mem[10];
218 static char cur_machine_random_cpu[10];
219 static char cur_machine_force_netboot[10];
220 static char cur_machine_start_paused[10];
221 static char cur_machine_ncpus[10];
222 static char cur_machine_n_gfx_cards[10];
223 static char cur_machine_serial_nr[10];
224 static char cur_machine_emulated_hz[10];
225 static char cur_machine_memory[10];
226 #define MAX_N_LOAD 15
227 #define MAX_LOAD_LEN 2000
228 static char *cur_machine_load[MAX_N_LOAD];
229 static int cur_machine_n_load;
230 #define MAX_N_DISK 10
231 #define MAX_DISK_LEN 2000
232 static char *cur_machine_disk[MAX_N_DISK];
233 static int cur_machine_n_disk;
234 #define MAX_N_DEVICE 20
235 #define MAX_DEVICE_LEN 400
236 static char *cur_machine_device[MAX_N_DISK];
237 static int cur_machine_n_device;
238 #define MAX_N_X11_DISP 5
239 #define MAX_X11_DISP_LEN 1000
240 static char *cur_machine_x11_disp[MAX_N_X11_DISP];
241 static int cur_machine_n_x11_disp;
242
243 #define WORD(w,var) { \
244 if (strcmp(word, w) == 0) { \
245 read_one_word(f, word, maxbuflen, \
246 line, EXPECT_LEFT_PARENTHESIS); \
247 read_one_word(f, var, sizeof(var), \
248 line, EXPECT_WORD); \
249 read_one_word(f, word, maxbuflen, \
250 line, EXPECT_RIGHT_PARENTHESIS); \
251 return; \
252 } \
253 }
254
255
256 /*
257 * parse_on_off():
258 *
259 * Returns 1 for "on", "yes", "enable", or "1".
260 * Returns 0 for "off", "no", "disable", or "0".
261 * Prints a fatal warning and exit()s for other values.
262 */
263 int parse_on_off(char *s)
264 {
265 if (strcasecmp(s, "on") == 0 || strcasecmp(s, "yes") == 0 ||
266 strcasecmp(s, "enable") == 0 || strcasecmp(s, "1") == 0)
267 return 1;
268 if (strcasecmp(s, "off") == 0 || strcasecmp(s, "no") == 0 ||
269 strcasecmp(s, "disable") == 0 || strcasecmp(s, "0") == 0)
270 return 0;
271
272 fatal("parse_on_off(): unknown value '%s'\n", s);
273 exit(1);
274 }
275
276
277 /*
278 * parse__none():
279 *
280 * emul ( [...] )
281 */
282 static void parse__none(struct emul *e, FILE *f, int *in_emul, int *line,
283 int *parsestate, char *word, size_t maxbuflen)
284 {
285 if (strcmp(word, "emul") == 0) {
286 if (*in_emul) {
287 fatal("line %i: only one emul per config "
288 "file is supported!\n", *line);
289 exit(1);
290 }
291 *parsestate = PARSESTATE_EMUL;
292 *in_emul = 1;
293 read_one_word(f, word, maxbuflen,
294 line, EXPECT_LEFT_PARENTHESIS);
295 return;
296 }
297
298 fatal("line %i: expecting 'emul', not '%s'\n", *line, word);
299 exit(1);
300 }
301
302
303 /*
304 * parse__emul():
305 *
306 * name, net, machine
307 */
308 static void parse__emul(struct emul *e, FILE *f, int *in_emul, int *line,
309 int *parsestate, char *word, size_t maxbuflen)
310 {
311 if (word[0] == ')') {
312 *parsestate = PARSESTATE_NONE;
313 return;
314 }
315
316 if (strcmp(word, "name") == 0) {
317 char tmp[200];
318 read_one_word(f, word, maxbuflen,
319 line, EXPECT_LEFT_PARENTHESIS);
320 read_one_word(f, tmp, sizeof(tmp), line, EXPECT_WORD);
321 read_one_word(f, word, maxbuflen,
322 line, EXPECT_RIGHT_PARENTHESIS);
323 if (e->name != NULL) {
324 free(e->name);
325 e->name = NULL;
326 }
327 e->name = strdup(tmp);
328 if (e->name == NULL) {
329 fprintf(stderr, "out of memory in parse__emul()\n");
330 exit(1);
331 }
332 debug("name: \"%s\"\n", e->name);
333 return;
334 }
335
336 if (strcmp(word, "net") == 0) {
337 *parsestate = PARSESTATE_NET;
338 read_one_word(f, word, maxbuflen,
339 line, EXPECT_LEFT_PARENTHESIS);
340
341 /* Default net: */
342 strcpy(cur_net_ipv4net, "10.0.0.0");
343 strcpy(cur_net_ipv4len, "8");
344 return;
345 }
346
347 if (strcmp(word, "machine") == 0) {
348 *parsestate = PARSESTATE_MACHINE;
349 read_one_word(f, word, maxbuflen,
350 line, EXPECT_LEFT_PARENTHESIS);
351
352 /* A "zero state": */
353 cur_machine_name[0] = '\0';
354 cur_machine_cpu[0] = '\0';
355 cur_machine_type[0] = '\0';
356 cur_machine_subtype[0] = '\0';
357 cur_machine_bootname[0] = '\0';
358 cur_machine_bootarg[0] = '\0';
359 cur_machine_n_load = 0;
360 cur_machine_n_disk = 0;
361 cur_machine_n_device = 0;
362 cur_machine_n_x11_disp = 0;
363 cur_machine_slowsi[0] = '\0';
364 cur_machine_debugger_on_badaddr[0] = '\0';
365 cur_machine_prom_emulation[0] = '\0';
366 cur_machine_use_x11[0] = '\0';
367 cur_machine_x11_scaledown[0] = '\0';
368 cur_machine_bintrans[0] = '\0';
369 cur_machine_old_bintrans[0] = '\0';
370 cur_machine_bintrans_size[0] = '\0';
371 cur_machine_byte_order[0] = '\0';
372 cur_machine_random_mem[0] = '\0';
373 cur_machine_random_cpu[0] = '\0';
374 cur_machine_force_netboot[0] = '\0';
375 cur_machine_start_paused[0] = '\0';
376 cur_machine_ncpus[0] = '\0';
377 cur_machine_n_gfx_cards[0] = '\0';
378 cur_machine_serial_nr[0] = '\0';
379 cur_machine_emulated_hz[0] = '\0';
380 cur_machine_memory[0] = '\0';
381 return;
382 }
383
384 fatal("line %i: not expecting '%s' in an 'emul' section\n",
385 *line, word);
386 exit(1);
387 }
388
389
390 /*
391 * parse__net():
392 *
393 * Simple words: ipv4net, ipv4len
394 *
395 * TODO: more words? for example an option to disable the gateway? that would
396 * have to be implemented correctly in src/net.c first.
397 */
398 static void parse__net(struct emul *e, FILE *f, int *in_emul, int *line,
399 int *parsestate, char *word, size_t maxbuflen)
400 {
401 if (word[0] == ')') {
402 /* Finished with the 'net' section. Let's create the net: */
403 if (e->net != NULL) {
404 fatal("line %i: more than one net isn't really "
405 "supported yet\n", *line);
406 exit(1);
407 }
408
409 e->net = net_init(e, NET_INIT_FLAG_GATEWAY,
410 cur_net_ipv4net, atoi(cur_net_ipv4len));
411
412 if (e->net == NULL) {
413 fatal("line %i: fatal error: could not create"
414 " the net (?)\n", *line);
415 exit(1);
416 }
417
418 *parsestate = PARSESTATE_EMUL;
419 return;
420 }
421
422 WORD("ipv4net", cur_net_ipv4net);
423 WORD("ipv4len", cur_net_ipv4len);
424
425 fatal("line %i: not expecting '%s' in a 'net' section\n", *line, word);
426 exit(1);
427 }
428
429
430 /*
431 * parse__machine():
432 */
433 static void parse__machine(struct emul *e, FILE *f, int *in_emul, int *line,
434 int *parsestate, char *word, size_t maxbuflen)
435 {
436 int r, i;
437
438 if (word[0] == ')') {
439 /* Finished with the 'machine' section. */
440 struct machine *m;
441
442 if (!cur_machine_name[0])
443 strcpy(cur_machine_name, "no_name");
444
445 m = emul_add_machine(e, cur_machine_name);
446
447 r = machine_name_to_type(cur_machine_type, cur_machine_subtype,
448 &m->machine_type, &m->machine_subtype, &m->arch);
449 if (!r)
450 exit(1);
451
452 if (cur_machine_cpu[0])
453 m->cpu_name = strdup(cur_machine_cpu);
454
455 if (!cur_machine_use_x11[0])
456 strcpy(cur_machine_use_x11, "no");
457 m->use_x11 = parse_on_off(cur_machine_use_x11);
458
459 if (!cur_machine_slowsi[0])
460 strcpy(cur_machine_slowsi, "no");
461 m->slow_serial_interrupts_hack_for_linux =
462 parse_on_off(cur_machine_slowsi);
463
464 if (!cur_machine_debugger_on_badaddr[0])
465 strcpy(cur_machine_debugger_on_badaddr, "no");
466 m->single_step_on_bad_addr =
467 parse_on_off(cur_machine_debugger_on_badaddr);
468
469 if (!cur_machine_prom_emulation[0])
470 strcpy(cur_machine_prom_emulation, "yes");
471 m->prom_emulation = parse_on_off(cur_machine_prom_emulation);
472
473 if (!cur_machine_random_mem[0])
474 strcpy(cur_machine_random_mem, "no");
475 m->random_mem_contents =
476 parse_on_off(cur_machine_random_mem);
477
478 if (!cur_machine_random_cpu[0])
479 strcpy(cur_machine_random_cpu, "no");
480 m->use_random_bootstrap_cpu =
481 parse_on_off(cur_machine_random_cpu);
482
483 m->byte_order_override = NO_BYTE_ORDER_OVERRIDE;
484 if (cur_machine_byte_order[0]) {
485 if (strncasecmp(cur_machine_byte_order, "big", 3) == 0)
486 m->byte_order_override = EMUL_BIG_ENDIAN;
487 else if (strncasecmp(cur_machine_byte_order, "little",
488 6) == 0)
489 m->byte_order_override = EMUL_LITTLE_ENDIAN;
490 else {
491 fatal("Byte order must be big-endian or"
492 " little-endian\n");
493 exit(1);
494 }
495 }
496
497 if (!cur_machine_bintrans[0])
498 strcpy(cur_machine_bintrans, "yes");
499 m->bintrans_enable = m->bintrans_enabled_from_start =
500 parse_on_off(cur_machine_bintrans);
501
502 if (!cur_machine_old_bintrans[0])
503 strcpy(cur_machine_old_bintrans, "no");
504 m->old_bintrans_enable = parse_on_off(cur_machine_old_bintrans);
505
506 if (!m->bintrans_enable && m->old_bintrans_enable) {
507 fatal("cannot use old bintrans when bintrans is"
508 " disabled.\n");
509 exit(1);
510 }
511
512 /* TODO: Hm... */
513 if (m->bintrans_enable)
514 m->speed_tricks = 0;
515
516 if (cur_machine_bintrans_size[0])
517 m->bintrans_size = 1048576 *
518 atoi(cur_machine_bintrans_size);
519
520 if (!cur_machine_force_netboot[0])
521 strcpy(cur_machine_force_netboot, "no");
522 m->force_netboot = parse_on_off(cur_machine_force_netboot);
523
524 if (!cur_machine_start_paused[0])
525 strcpy(cur_machine_start_paused, "no");
526 m->start_paused = parse_on_off(cur_machine_start_paused);
527
528 /* NOTE: Default nr of CPUs is 0: */
529 if (!cur_machine_ncpus[0])
530 strcpy(cur_machine_ncpus, "0");
531 m->ncpus = atoi(cur_machine_ncpus);
532
533 if (cur_machine_n_gfx_cards[0])
534 m->n_gfx_cards = atoi(cur_machine_n_gfx_cards);
535
536 if (cur_machine_serial_nr[0]) {
537 m->serial_nr = atoi(cur_machine_serial_nr);
538 e->next_serial_nr = m->serial_nr+1;
539 }
540
541 if (cur_machine_emulated_hz[0]) {
542 m->emulated_hz = mystrtoull(cur_machine_emulated_hz,
543 NULL, 0);
544 m->automatic_clock_adjustment = 0;
545 }
546
547 /* NOTE: Default nr of CPUs is 0: */
548 if (!cur_machine_memory[0])
549 strcpy(cur_machine_memory, "0");
550 m->physical_ram_in_mb = atoi(cur_machine_memory);
551
552 if (!cur_machine_x11_scaledown[0])
553 m->x11_scaledown = 1;
554 else {
555 m->x11_scaledown = atoi(cur_machine_x11_scaledown);
556 if (m->x11_scaledown < 0) {
557 fprintf(stderr, "Invalid scaledown value"
558 " (%i)\n", m->x11_scaledown);
559 exit(1);
560 }
561 }
562
563 for (i=0; i<cur_machine_n_disk; i++) {
564 diskimage_add(m, cur_machine_disk[i]);
565 free(cur_machine_disk[i]);
566 cur_machine_disk[i] = NULL;
567 }
568
569 m->boot_kernel_filename = strdup(cur_machine_bootname);
570
571 if (cur_machine_bootarg[0])
572 m->boot_string_argument = strdup(cur_machine_bootarg);
573
574 for (i=0; i<cur_machine_n_x11_disp; i++) {
575 m->x11_n_display_names ++;
576 m->x11_display_names = realloc(
577 m->x11_display_names, m->x11_n_display_names
578 * sizeof(char *));
579 if (m->x11_display_names == NULL) {
580 printf("out of memory\n");
581 exit(1);
582 }
583 m->x11_display_names[m->x11_n_display_names-1] =
584 strdup(cur_machine_x11_disp[i]);
585 if (m->x11_display_names
586 [m->x11_n_display_names-1] == NULL) {
587 printf("out of memory\n");
588 exit(1);
589 }
590 free(cur_machine_x11_disp[i]);
591 cur_machine_x11_disp[i] = NULL;
592 }
593
594 emul_machine_setup(m,
595 cur_machine_n_load, cur_machine_load,
596 cur_machine_n_device, cur_machine_device);
597
598 for (i=0; i<cur_machine_n_device; i++) {
599 free(cur_machine_device[i]);
600 cur_machine_device[i] = NULL;
601 }
602
603 for (i=0; i<cur_machine_n_load; i++) {
604 free(cur_machine_load[i]);
605 cur_machine_load[i] = NULL;
606 }
607
608 *parsestate = PARSESTATE_EMUL;
609 return;
610 }
611
612 WORD("name", cur_machine_name);
613 WORD("cpu", cur_machine_cpu);
614 WORD("type", cur_machine_type);
615 WORD("subtype", cur_machine_subtype);
616 WORD("bootname", cur_machine_bootname);
617 WORD("bootarg", cur_machine_bootarg);
618 WORD("slow_serial_interrupts_hack_for_linux", cur_machine_slowsi);
619 WORD("debugger_on_badaddr", cur_machine_debugger_on_badaddr);
620 WORD("prom_emulation", cur_machine_prom_emulation);
621 WORD("use_x11", cur_machine_use_x11);
622 WORD("x11_scaledown", cur_machine_x11_scaledown);
623 WORD("bintrans", cur_machine_bintrans);
624 WORD("old_bintrans", cur_machine_old_bintrans);
625 WORD("bintrans_size", cur_machine_bintrans_size);
626 WORD("byte_order", cur_machine_byte_order);
627 WORD("random_mem_contents", cur_machine_random_mem);
628 WORD("use_random_bootstrap_cpu", cur_machine_random_cpu);
629 WORD("force_netboot", cur_machine_force_netboot);
630 WORD("ncpus", cur_machine_ncpus);
631 WORD("serial_nr", cur_machine_serial_nr);
632 WORD("n_gfx_cards", cur_machine_n_gfx_cards);
633 WORD("emulated_hz", cur_machine_emulated_hz);
634 WORD("memory", cur_machine_memory);
635 WORD("start_paused", cur_machine_start_paused);
636
637 if (strcmp(word, "load") == 0) {
638 read_one_word(f, word, maxbuflen,
639 line, EXPECT_LEFT_PARENTHESIS);
640 if (cur_machine_n_load >= MAX_N_LOAD) {
641 fprintf(stderr, "too many loads\n");
642 exit(1);
643 }
644 cur_machine_load[cur_machine_n_load] = malloc(MAX_LOAD_LEN);
645 if (cur_machine_load[cur_machine_n_load] == NULL) {
646 fprintf(stderr, "out of memory\n");
647 exit(1);
648 }
649 read_one_word(f, cur_machine_load[cur_machine_n_load],
650 MAX_LOAD_LEN, line, EXPECT_WORD);
651 cur_machine_n_load ++;
652 read_one_word(f, word, maxbuflen,
653 line, EXPECT_RIGHT_PARENTHESIS);
654 return;
655 }
656
657 if (strcmp(word, "disk") == 0) {
658 read_one_word(f, word, maxbuflen,
659 line, EXPECT_LEFT_PARENTHESIS);
660 if (cur_machine_n_disk >= MAX_N_DISK) {
661 fprintf(stderr, "too many disks\n");
662 exit(1);
663 }
664 cur_machine_disk[cur_machine_n_disk] = malloc(MAX_DISK_LEN);
665 if (cur_machine_disk[cur_machine_n_disk] == NULL) {
666 fprintf(stderr, "out of memory\n");
667 exit(1);
668 }
669 read_one_word(f, cur_machine_disk[cur_machine_n_disk],
670 MAX_DISK_LEN, line, EXPECT_WORD);
671 cur_machine_n_disk ++;
672 read_one_word(f, word, maxbuflen,
673 line, EXPECT_RIGHT_PARENTHESIS);
674 return;
675 }
676
677 if (strcmp(word, "device") == 0) {
678 read_one_word(f, word, maxbuflen,
679 line, EXPECT_LEFT_PARENTHESIS);
680 if (cur_machine_n_device >= MAX_N_DEVICE) {
681 fprintf(stderr, "too many devices\n");
682 exit(1);
683 }
684 cur_machine_device[cur_machine_n_device] =
685 malloc(MAX_DEVICE_LEN);
686 if (cur_machine_device[cur_machine_n_device] == NULL) {
687 fprintf(stderr, "out of memory\n");
688 exit(1);
689 }
690 read_one_word(f, cur_machine_device[cur_machine_n_device],
691 MAX_DEVICE_LEN, line, EXPECT_WORD);
692 cur_machine_n_device ++;
693 read_one_word(f, word, maxbuflen,
694 line, EXPECT_RIGHT_PARENTHESIS);
695 return;
696 }
697
698 if (strcmp(word, "add_x11_display") == 0) {
699 read_one_word(f, word, maxbuflen,
700 line, EXPECT_LEFT_PARENTHESIS);
701 if (cur_machine_n_x11_disp >= MAX_N_X11_DISP) {
702 fprintf(stderr, "too many x11 displays\n");
703 exit(1);
704 }
705 cur_machine_x11_disp[cur_machine_n_x11_disp] =
706 malloc(MAX_X11_DISP_LEN);
707 if (cur_machine_x11_disp[cur_machine_n_x11_disp] == NULL) {
708 fprintf(stderr, "out of memory\n");
709 exit(1);
710 }
711 read_one_word(f, cur_machine_x11_disp[cur_machine_n_x11_disp],
712 MAX_X11_DISP_LEN, line, EXPECT_WORD);
713 cur_machine_n_x11_disp ++;
714 read_one_word(f, word, maxbuflen,
715 line, EXPECT_RIGHT_PARENTHESIS);
716 return;
717 }
718
719 fatal("line %i: not expecting '%s' in a 'machine' section\n",
720 *line, word);
721 exit(1);
722 }
723
724
725 /*
726 * emul_parse_config():
727 *
728 * Set up an emulation by parsing a config file.
729 */
730 void emul_parse_config(struct emul *e, FILE *f)
731 {
732 char word[500];
733 int in_emul = 0;
734 int line = 1;
735 int parsestate = PARSESTATE_NONE;
736
737 /* debug("emul_parse_config()\n"); */
738
739 while (!feof(f)) {
740 read_one_word(f, word, sizeof(word), &line,
741 EXPECT_WORD | EXPECT_RIGHT_PARENTHESIS);
742 if (!word[0])
743 break;
744
745 /* debug("word = '%s'\n", word); */
746
747 switch (parsestate) {
748 case PARSESTATE_NONE:
749 parse__none(e, f, &in_emul, &line, &parsestate,
750 word, sizeof(word));
751 break;
752 case PARSESTATE_EMUL:
753 parse__emul(e, f, &in_emul, &line, &parsestate,
754 word, sizeof(word));
755 break;
756 case PARSESTATE_NET:
757 parse__net(e, f, &in_emul, &line, &parsestate,
758 word, sizeof(word));
759 break;
760 case PARSESTATE_MACHINE:
761 parse__machine(e, f, &in_emul, &line, &parsestate,
762 word, sizeof(word));
763 break;
764 default:
765 fatal("INTERNAL ERROR in emul_parse.c ("
766 "parsestate %i is not imlemented yet?)\n",
767 parsestate);
768 exit(1);
769 }
770 }
771
772 if (parsestate != PARSESTATE_NONE) {
773 fatal("EOF but not enough right parentheses?\n");
774 exit(1);
775 }
776 }
777

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