Commit | Line | Data |
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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
601cecf0 | 3 | Copyright 1994, 1995, 1996, 1997, 2003 Andrew Cagney |
c906108c SS |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
8 | (at your option) any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _PSIM_C_ | |
22 | #define _PSIM_C_ | |
23 | ||
24 | #include "cpu.h" /* includes psim.h */ | |
25 | #include "idecode.h" | |
26 | #include "options.h" | |
27 | ||
28 | #include "tree.h" | |
29 | ||
30 | #include <signal.h> | |
31 | ||
32 | #include <stdio.h> | |
33 | #include <ctype.h> | |
34 | ||
35 | #ifdef HAVE_STDLIB_H | |
36 | #include <stdlib.h> | |
37 | #endif | |
38 | ||
39 | #include <setjmp.h> | |
40 | ||
41 | #ifdef HAVE_STRING_H | |
42 | #include <string.h> | |
43 | #else | |
44 | #ifdef HAVE_STRINGS_H | |
45 | #include <strings.h> | |
46 | #endif | |
47 | #endif | |
48 | ||
49 | ||
50 | #include "bfd.h" | |
c55c7ff1 | 51 | #include "libiberty.h" |
3a611ef5 | 52 | #include "gdb/signals.h" |
c906108c SS |
53 | |
54 | /* system structure, actual size of processor array determined at | |
55 | runtime */ | |
56 | ||
57 | struct _psim { | |
58 | event_queue *events; | |
59 | device *devices; | |
60 | mon *monitor; | |
61 | os_emul *os_emulation; | |
62 | core *memory; | |
63 | ||
64 | /* escape routine for inner functions */ | |
65 | void *path_to_halt; | |
66 | void *path_to_restart; | |
67 | ||
68 | /* status from last halt */ | |
69 | psim_status halt_status; | |
70 | ||
71 | /* the processors proper */ | |
72 | int nr_cpus; | |
73 | int last_cpu; /* CPU that last (tried to) execute an instruction */ | |
74 | cpu *processors[MAX_NR_PROCESSORS]; | |
75 | }; | |
76 | ||
77 | ||
78 | int current_target_byte_order; | |
79 | int current_host_byte_order; | |
80 | int current_environment; | |
81 | int current_alignment; | |
82 | int current_floating_point; | |
83 | int current_model_issue = MODEL_ISSUE_IGNORE; | |
84 | int current_stdio = DO_USE_STDIO; | |
85 | model_enum current_model = WITH_DEFAULT_MODEL; | |
86 | ||
87 | ||
88 | /* create the device tree */ | |
89 | ||
90 | INLINE_PSIM\ | |
91 | (device *) | |
92 | psim_tree(void) | |
93 | { | |
94 | device *root = tree_parse(NULL, "core"); | |
95 | tree_parse(root, "/aliases"); | |
96 | tree_parse(root, "/options"); | |
97 | tree_parse(root, "/chosen"); | |
98 | tree_parse(root, "/packages"); | |
99 | tree_parse(root, "/cpus"); | |
100 | tree_parse(root, "/openprom"); | |
101 | tree_parse(root, "/openprom/init"); | |
102 | tree_parse(root, "/openprom/trace"); | |
103 | tree_parse(root, "/openprom/options"); | |
104 | return root; | |
105 | } | |
106 | ||
107 | STATIC_INLINE_PSIM\ | |
108 | (char *) | |
109 | find_arg(char *err_msg, | |
110 | int *ptr_to_argp, | |
111 | char **argv) | |
112 | { | |
113 | *ptr_to_argp += 1; | |
114 | if (argv[*ptr_to_argp] == NULL) | |
115 | error(err_msg); | |
116 | return argv[*ptr_to_argp]; | |
117 | } | |
118 | ||
119 | INLINE_PSIM\ | |
120 | (void) | |
6efef468 | 121 | psim_usage(int verbose, int help) |
c906108c SS |
122 | { |
123 | printf_filtered("Usage:\n"); | |
124 | printf_filtered("\n"); | |
125 | printf_filtered("\tpsim [ <psim-option> ... ] <image> [ <image-arg> ... ]\n"); | |
126 | printf_filtered("\n"); | |
127 | printf_filtered("Where\n"); | |
128 | printf_filtered("\n"); | |
129 | printf_filtered("\t<image> Name of the PowerPC program to run.\n"); | |
130 | if (verbose) { | |
131 | printf_filtered("\t This can either be a PowerPC binary or\n"); | |
132 | printf_filtered("\t a text file containing a device tree\n"); | |
133 | printf_filtered("\t specification.\n"); | |
134 | printf_filtered("\t PSIM will attempt to determine from the\n"); | |
135 | printf_filtered("\t specified <image> the intended emulation\n"); | |
136 | printf_filtered("\t environment.\n"); | |
137 | printf_filtered("\t If PSIM gets it wrong, the emulation\n"); | |
138 | printf_filtered("\t environment can be specified using the\n"); | |
139 | printf_filtered("\t `-e' option (described below).\n"); | |
140 | printf_filtered("\n"); } | |
141 | printf_filtered("\t<image-arg> Argument to be passed to <image>\n"); | |
142 | if (verbose) { | |
143 | printf_filtered("\t These arguments will be passed to\n"); | |
144 | printf_filtered("\t <image> (as standard C argv, argc)\n"); | |
145 | printf_filtered("\t when <image> is started.\n"); | |
146 | printf_filtered("\n"); } | |
147 | printf_filtered("\t<psim-option> See below\n"); | |
148 | printf_filtered("\n"); | |
149 | printf_filtered("The following are valid <psim-option>s:\n"); | |
150 | printf_filtered("\n"); | |
151 | ||
152 | printf_filtered("\t-c <count> Limit the simulation to <count> iterations\n"); | |
153 | if (verbose) { | |
154 | printf_filtered("\n"); | |
155 | } | |
156 | ||
157 | printf_filtered("\t-i or -i2 Print instruction counting statistics\n"); | |
158 | if (verbose) { | |
159 | printf_filtered("\t Specify -i2 for a more detailed display\n"); | |
160 | printf_filtered("\n"); | |
161 | } | |
162 | ||
163 | printf_filtered("\t-I Print execution unit statistics\n"); | |
164 | if (verbose) { printf_filtered("\n"); } | |
165 | ||
166 | printf_filtered("\t-e <os-emul> specify an OS or platform to model\n"); | |
167 | if (verbose) { | |
168 | printf_filtered("\t Can be any of the following:\n"); | |
169 | printf_filtered("\t bug - OEA + MOTO BUG ROM calls\n"); | |
170 | printf_filtered("\t netbsd - UEA + NetBSD system calls\n"); | |
171 | printf_filtered("\t solaris - UEA + Solaris system calls\n"); | |
172 | printf_filtered("\t linux - UEA + Linux system calls\n"); | |
173 | printf_filtered("\t chirp - OEA + a few OpenBoot calls\n"); | |
174 | printf_filtered("\n"); } | |
175 | ||
176 | printf_filtered("\t-E <endian> Specify the endianness of the target\n"); | |
177 | if (verbose) { | |
178 | printf_filtered("\t Can be any of the following:\n"); | |
179 | printf_filtered("\t big - big endian target\n"); | |
180 | printf_filtered("\t little - little endian target\n"); | |
181 | printf_filtered("\n"); } | |
182 | ||
183 | printf_filtered("\t-f <file> Merge <file> into the device tree\n"); | |
184 | if (verbose) { printf_filtered("\n"); } | |
185 | ||
186 | printf_filtered("\t-h -? -H give more detailed usage\n"); | |
187 | if (verbose) { printf_filtered("\n"); } | |
188 | ||
189 | printf_filtered("\t-m <model> Specify the processor to model (604)\n"); | |
190 | if (verbose) { | |
191 | printf_filtered("\t Selects the processor to use when\n"); | |
192 | printf_filtered("\t modeling execution units. Includes:\n"); | |
193 | printf_filtered("\t 604, 603 and 603e\n"); | |
194 | printf_filtered("\n"); } | |
195 | ||
196 | printf_filtered("\t-n <nr-smp> Specify the number of processors in SMP simulations\n"); | |
197 | if (verbose) { | |
198 | printf_filtered("\t Specifies the number of processors that are\n"); | |
199 | printf_filtered("\t to be modeled in a symetric multi-processor (SMP)\n"); | |
200 | printf_filtered("\t simulation\n"); | |
201 | printf_filtered("\n"); } | |
202 | ||
203 | printf_filtered("\t-o <dev-spec> Add device <dev-spec> to the device tree\n"); | |
204 | if (verbose) { printf_filtered("\n"); } | |
205 | ||
206 | printf_filtered("\t-r <ram-size> Set RAM size in bytes (OEA environments)\n"); | |
207 | if (verbose) { printf_filtered("\n"); } | |
208 | ||
209 | printf_filtered("\t-t [!]<trace> Enable (disable) <trace> option\n"); | |
210 | if (verbose) { printf_filtered("\n"); } | |
211 | ||
212 | printf_filtered("\n"); | |
213 | trace_usage(verbose); | |
214 | device_usage(verbose); | |
215 | if (verbose > 1) { | |
216 | printf_filtered("\n"); | |
217 | print_options(); | |
218 | } | |
6efef468 JM |
219 | |
220 | if (REPORT_BUGS_TO[0]) | |
221 | printf ("Report bugs to %s\n", REPORT_BUGS_TO); | |
222 | exit (help ? 0 : 1); | |
c906108c SS |
223 | } |
224 | ||
225 | /* Test "string" for containing a string of digits that form a number | |
7a292a7a | 226 | between "min" and "max". The return value is the number or "err". */ |
c906108c SS |
227 | static |
228 | int is_num( char *string, int min, int max, int err) | |
229 | { | |
230 | int result = 0; | |
231 | ||
232 | for ( ; *string; ++string) | |
233 | { | |
234 | if (!isdigit(*string)) | |
235 | { | |
236 | result = err; | |
237 | break; | |
238 | } | |
239 | result = result * 10 + (*string - '0'); | |
240 | } | |
241 | if (result < min || result > max) | |
242 | result = err; | |
243 | ||
244 | return result; | |
245 | } | |
246 | ||
247 | INLINE_PSIM\ | |
248 | (char **) | |
249 | psim_options(device *root, | |
250 | char **argv) | |
251 | { | |
252 | device *current = root; | |
253 | int argp; | |
254 | if (argv == NULL) | |
255 | return NULL; | |
256 | argp = 0; | |
257 | while (argv[argp] != NULL && argv[argp][0] == '-') { | |
258 | char *p = argv[argp] + 1; | |
259 | char *param; | |
260 | while (*p != '\0') { | |
261 | switch (*p) { | |
262 | default: | |
11eef9ed | 263 | printf_filtered ("Invalid Option: %s\n", argv[argp]); |
6efef468 | 264 | psim_usage(0, 0); |
c906108c SS |
265 | error (""); |
266 | break; | |
267 | case 'c': | |
268 | param = find_arg("Missing <count> option for -c (max-iterations)\n", &argp, argv); | |
269 | tree_parse(root, "/openprom/options/max-iterations %s", param); | |
270 | break; | |
271 | case 'e': | |
272 | param = find_arg("Missing <emul> option for -e (os-emul)\n", &argp, argv); | |
273 | tree_parse(root, "/openprom/options/os-emul %s", param); | |
274 | break; | |
275 | case 'E': | |
276 | /* endian spec, ignored for now */ | |
277 | param = find_arg("Missing <endian> option for -E (target-endian)\n", &argp, argv); | |
278 | if (strcmp (param, "big") == 0) | |
279 | tree_parse (root, "/options/little-endian? false"); | |
280 | else if (strcmp (param, "little") == 0) | |
281 | tree_parse (root, "/options/little-endian? true"); | |
282 | else | |
283 | { | |
284 | printf_filtered ("Invalid <endian> option for -E (target-endian)\n"); | |
6efef468 | 285 | psim_usage (0, 0); |
c906108c SS |
286 | } |
287 | break; | |
288 | case 'f': | |
289 | param = find_arg("Missing <file> option for -f\n", &argp, argv); | |
290 | psim_merge_device_file(root, param); | |
291 | break; | |
292 | case 'h': | |
293 | case '?': | |
6efef468 | 294 | psim_usage(1, 1); |
c906108c SS |
295 | break; |
296 | case 'H': | |
6efef468 | 297 | psim_usage(2, 1); |
c906108c SS |
298 | break; |
299 | case 'i': | |
300 | if (isdigit(p[1])) { | |
301 | tree_parse(root, "/openprom/trace/print-info %c", p[1]); | |
302 | p++; | |
303 | } | |
304 | else { | |
305 | tree_parse(root, "/openprom/trace/print-info 1"); | |
306 | } | |
307 | break; | |
308 | case 'I': | |
309 | tree_parse(root, "/openprom/trace/print-info 2"); | |
310 | tree_parse(root, "/openprom/options/model-issue %d", | |
311 | MODEL_ISSUE_PROCESS); | |
312 | break; | |
313 | case 'm': | |
314 | param = find_arg("Missing <model> option for -m (model)\n", &argp, argv); | |
315 | tree_parse(root, "/openprom/options/model \"%s", param); | |
316 | break; | |
317 | case 'n': | |
318 | param = find_arg("Missing <nr-smp> option for -n (smp)\n", &argp, argv); | |
319 | tree_parse(root, "/openprom/options/smp %s", param); | |
320 | break; | |
321 | case 'o': | |
322 | param = find_arg("Missing <dev-spec> option for -o\n", &argp, argv); | |
c906108c SS |
323 | if (memcmp(param, "mpc860c0", 8) == 0) |
324 | { | |
325 | if (param[8] == '\0') | |
326 | tree_parse(root, "/options/mpc860c0 5"); | |
327 | else if (param[8] == '=' && is_num(param+9, 1, 10, 0)) | |
328 | { | |
329 | tree_parse(root, "/options/mpc860c0 %s", param+9); | |
330 | } | |
331 | else error("Invalid mpc860c0 option for -o\n"); | |
332 | } | |
333 | else | |
c906108c SS |
334 | current = tree_parse(current, "%s", param); |
335 | break; | |
336 | case 'r': | |
337 | param = find_arg("Missing <ram-size> option for -r (oea-memory-size)\n", &argp, argv); | |
338 | tree_parse(root, "/openprom/options/oea-memory-size %s", | |
339 | param); | |
340 | break; | |
341 | case 't': | |
342 | param = find_arg("Missing <trace> option for -t (trace/*)\n", &argp, argv); | |
343 | if (param[0] == '!') | |
344 | tree_parse(root, "/openprom/trace/%s 0", param+1); | |
345 | else | |
346 | tree_parse(root, "/openprom/trace/%s 1", param); | |
347 | break; | |
47243d69 EZ |
348 | case '-': |
349 | /* it's a long option of the form --optionname=optionvalue. | |
350 | Such options can be passed through if we are invoked by | |
351 | gdb. */ | |
352 | if (strstr(argv[argp], "architecture") != NULL) { | |
353 | /* we must consume the argument here, so that we get out | |
354 | of the loop. */ | |
355 | p = argv[argp] + strlen(argv[argp]) - 1; | |
356 | printf_filtered("Warning - architecture parameter ignored\n"); | |
357 | } | |
6efef468 JM |
358 | else if (strcmp (argv[argp], "--help") == 0) |
359 | psim_usage (0, 1); | |
8294052c | 360 | else if (strncmp (argv[argp], "--sysroot=", |
94e4274d | 361 | sizeof ("--sysroot=") - 1) == 0) |
8294052c JB |
362 | /* Ignore this option. */ |
363 | p = argv[argp] + strlen(argv[argp]) - 1; | |
6efef468 JM |
364 | else if (strcmp (argv[argp], "--version") == 0) |
365 | { | |
366 | extern const char version[]; | |
367 | printf ("GNU simulator %s%s\n", PKGVERSION, version); | |
368 | exit (0); | |
369 | } | |
47243d69 | 370 | else |
11eef9ed JB |
371 | { |
372 | printf_filtered ("Invalid option: %s\n", argv[argp]); | |
373 | psim_usage (0, 0); | |
374 | error (""); | |
375 | } | |
47243d69 | 376 | break; |
c906108c SS |
377 | } |
378 | p += 1; | |
379 | } | |
380 | argp += 1; | |
381 | } | |
382 | /* force the trace node to process its options now *before* the tree | |
383 | initialization occures */ | |
384 | device_ioctl(tree_find_device(root, "/openprom/trace"), | |
385 | NULL, 0, | |
386 | device_ioctl_set_trace); | |
387 | ||
7a292a7a SS |
388 | { |
389 | void semantic_init(device* root); | |
390 | semantic_init(root); | |
391 | } | |
c906108c SS |
392 | |
393 | /* return where the options end */ | |
394 | return argv + argp; | |
395 | } | |
396 | ||
397 | INLINE_PSIM\ | |
398 | (void) | |
399 | psim_command(device *root, | |
400 | char **argv) | |
401 | { | |
402 | int argp = 0; | |
403 | if (argv[argp] == NULL) { | |
404 | return; | |
405 | } | |
406 | else if (strcmp(argv[argp], "trace") == 0) { | |
407 | const char *opt = find_arg("Missing <trace> option", &argp, argv); | |
408 | if (opt[0] == '!') | |
409 | trace_option(opt + 1, 0); | |
410 | else | |
411 | trace_option(opt, 1); | |
412 | } | |
413 | else if (strcmp(*argv, "change-media") == 0) { | |
414 | char *device = find_arg("Missing device name", &argp, argv); | |
415 | char *media = argv[++argp]; | |
416 | device_ioctl(tree_find_device(root, device), NULL, 0, | |
417 | device_ioctl_change_media, media); | |
418 | } | |
419 | else { | |
420 | printf_filtered("Unknown PSIM command %s, try\n", argv[argp]); | |
421 | printf_filtered(" trace <trace-option>\n"); | |
422 | printf_filtered(" change-media <device> [ <new-image> ]\n"); | |
423 | } | |
424 | } | |
425 | ||
426 | ||
427 | /* create the simulator proper from the device tree and executable */ | |
428 | ||
429 | INLINE_PSIM\ | |
430 | (psim *) | |
431 | psim_create(const char *file_name, | |
432 | device *root) | |
433 | { | |
434 | int cpu_nr; | |
435 | const char *env; | |
436 | psim *system; | |
437 | os_emul *os_emulation; | |
438 | int nr_cpus; | |
439 | ||
440 | /* given this partially populated device tree, os_emul_create() uses | |
441 | it and file_name to determine the selected emulation and hence | |
442 | further populate the tree with any other required nodes. */ | |
443 | ||
444 | os_emulation = os_emul_create(file_name, root); | |
445 | if (os_emulation == NULL) | |
446 | error("psim: either file %s was not reconized or unreconized or unknown os-emulation type\n", file_name); | |
447 | ||
448 | /* fill in the missing real number of CPU's */ | |
449 | nr_cpus = tree_find_integer_property(root, "/openprom/options/smp"); | |
450 | if (MAX_NR_PROCESSORS < nr_cpus) | |
451 | error("target and configured number of cpus conflict\n"); | |
452 | ||
453 | /* fill in the missing TARGET BYTE ORDER information */ | |
454 | current_target_byte_order | |
455 | = (tree_find_boolean_property(root, "/options/little-endian?") | |
456 | ? LITTLE_ENDIAN | |
457 | : BIG_ENDIAN); | |
458 | if (CURRENT_TARGET_BYTE_ORDER != current_target_byte_order) | |
459 | error("target and configured byte order conflict\n"); | |
460 | ||
461 | /* fill in the missing HOST BYTE ORDER information */ | |
462 | current_host_byte_order = (current_host_byte_order = 1, | |
463 | (*(char*)(¤t_host_byte_order) | |
464 | ? LITTLE_ENDIAN | |
465 | : BIG_ENDIAN)); | |
466 | if (CURRENT_HOST_BYTE_ORDER != current_host_byte_order) | |
467 | error("host and configured byte order conflict\n"); | |
468 | ||
469 | /* fill in the missing OEA/VEA information */ | |
470 | env = tree_find_string_property(root, "/openprom/options/env"); | |
471 | current_environment = ((strcmp(env, "user") == 0 | |
472 | || strcmp(env, "uea") == 0) | |
473 | ? USER_ENVIRONMENT | |
474 | : (strcmp(env, "virtual") == 0 | |
475 | || strcmp(env, "vea") == 0) | |
476 | ? VIRTUAL_ENVIRONMENT | |
477 | : (strcmp(env, "operating") == 0 | |
478 | || strcmp(env, "oea") == 0) | |
479 | ? OPERATING_ENVIRONMENT | |
480 | : 0); | |
481 | if (current_environment == 0) | |
482 | error("unreconized /options env property\n"); | |
483 | if (CURRENT_ENVIRONMENT != current_environment) | |
484 | error("target and configured environment conflict\n"); | |
485 | ||
486 | /* fill in the missing ALLIGNMENT information */ | |
487 | current_alignment | |
488 | = (tree_find_boolean_property(root, "/openprom/options/strict-alignment?") | |
489 | ? STRICT_ALIGNMENT | |
490 | : NONSTRICT_ALIGNMENT); | |
491 | if (CURRENT_ALIGNMENT != current_alignment) | |
492 | error("target and configured alignment conflict\n"); | |
493 | ||
494 | /* fill in the missing FLOATING POINT information */ | |
495 | current_floating_point | |
496 | = (tree_find_boolean_property(root, "/openprom/options/floating-point?") | |
497 | ? HARD_FLOATING_POINT | |
498 | : SOFT_FLOATING_POINT); | |
499 | if (CURRENT_FLOATING_POINT != current_floating_point) | |
500 | error("target and configured floating-point conflict\n"); | |
501 | ||
502 | /* fill in the missing STDIO information */ | |
503 | current_stdio | |
504 | = (tree_find_boolean_property(root, "/openprom/options/use-stdio?") | |
505 | ? DO_USE_STDIO | |
506 | : DONT_USE_STDIO); | |
507 | if (CURRENT_STDIO != current_stdio) | |
508 | error("target and configured stdio interface conflict\n"); | |
509 | ||
510 | /* sort out the level of detail for issue modeling */ | |
511 | current_model_issue | |
512 | = tree_find_integer_property(root, "/openprom/options/model-issue"); | |
513 | if (CURRENT_MODEL_ISSUE != current_model_issue) | |
514 | error("target and configured model-issue conflict\n"); | |
515 | ||
516 | /* sort out our model architecture - wrong. | |
517 | ||
518 | FIXME: this should be obtaining the required information from the | |
519 | device tree via the "/chosen" property "cpu" which is an instance | |
520 | (ihandle) for the only executing processor. By converting that | |
521 | ihandle into the corresponding cpu's phandle and then querying | |
522 | the "name" property, the cpu type can be determined. Ok? */ | |
523 | ||
524 | model_set(tree_find_string_property(root, "/openprom/options/model")); | |
525 | ||
526 | /* create things */ | |
527 | system = ZALLOC(psim); | |
528 | system->events = event_queue_create(); | |
529 | system->memory = core_from_device(root); | |
530 | system->monitor = mon_create(); | |
531 | system->nr_cpus = nr_cpus; | |
532 | system->os_emulation = os_emulation; | |
533 | system->devices = root; | |
534 | ||
535 | /* now all the processors attaching to each their per-cpu information */ | |
536 | for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++) { | |
537 | system->processors[cpu_nr] = cpu_create(system, | |
538 | system->memory, | |
539 | mon_cpu(system->monitor, | |
540 | cpu_nr), | |
541 | system->os_emulation, | |
542 | cpu_nr); | |
543 | } | |
544 | ||
545 | /* dump out the contents of the device tree */ | |
546 | if (ppc_trace[trace_print_device_tree] || ppc_trace[trace_dump_device_tree]) | |
547 | tree_print(root); | |
548 | if (ppc_trace[trace_dump_device_tree]) | |
549 | error(""); | |
550 | ||
551 | return system; | |
552 | } | |
553 | ||
554 | ||
555 | /* allow the simulation to stop/restart abnormaly */ | |
556 | ||
557 | INLINE_PSIM\ | |
558 | (void) | |
559 | psim_set_halt_and_restart(psim *system, | |
560 | void *halt_jmp_buf, | |
561 | void *restart_jmp_buf) | |
562 | { | |
563 | system->path_to_halt = halt_jmp_buf; | |
564 | system->path_to_restart = restart_jmp_buf; | |
565 | } | |
566 | ||
567 | INLINE_PSIM\ | |
568 | (void) | |
569 | psim_clear_halt_and_restart(psim *system) | |
570 | { | |
571 | system->path_to_halt = NULL; | |
572 | system->path_to_restart = NULL; | |
573 | } | |
574 | ||
575 | INLINE_PSIM\ | |
576 | (void) | |
577 | psim_restart(psim *system, | |
578 | int current_cpu) | |
579 | { | |
580 | ASSERT(current_cpu >= 0 && current_cpu < system->nr_cpus); | |
581 | ASSERT(system->path_to_restart != NULL); | |
582 | system->last_cpu = current_cpu; | |
583 | longjmp(*(jmp_buf*)(system->path_to_restart), current_cpu + 1); | |
584 | } | |
585 | ||
586 | ||
587 | static void | |
588 | cntrl_c_simulation(void *data) | |
589 | { | |
590 | psim *system = data; | |
591 | psim_halt(system, | |
592 | psim_nr_cpus(system), | |
593 | was_continuing, | |
a493e3e2 | 594 | GDB_SIGNAL_INT); |
c906108c SS |
595 | } |
596 | ||
597 | INLINE_PSIM\ | |
598 | (void) | |
599 | psim_stop(psim *system) | |
600 | { | |
601 | event_queue_schedule_after_signal(psim_event_queue(system), | |
602 | 0 /*NOW*/, | |
603 | cntrl_c_simulation, | |
604 | system); | |
605 | } | |
606 | ||
607 | INLINE_PSIM\ | |
608 | (void) | |
609 | psim_halt(psim *system, | |
610 | int current_cpu, | |
611 | stop_reason reason, | |
612 | int signal) | |
613 | { | |
614 | ASSERT(current_cpu >= 0 && current_cpu <= system->nr_cpus); | |
615 | ASSERT(system->path_to_halt != NULL); | |
616 | system->last_cpu = current_cpu; | |
617 | system->halt_status.reason = reason; | |
618 | system->halt_status.signal = signal; | |
619 | if (current_cpu == system->nr_cpus) { | |
620 | system->halt_status.cpu_nr = 0; | |
621 | system->halt_status.program_counter = | |
622 | cpu_get_program_counter(system->processors[0]); | |
623 | } | |
624 | else { | |
625 | system->halt_status.cpu_nr = current_cpu; | |
626 | system->halt_status.program_counter = | |
627 | cpu_get_program_counter(system->processors[current_cpu]); | |
628 | } | |
629 | longjmp(*(jmp_buf*)(system->path_to_halt), current_cpu + 1); | |
630 | } | |
631 | ||
632 | ||
633 | INLINE_PSIM\ | |
634 | (int) | |
635 | psim_last_cpu(psim *system) | |
636 | { | |
637 | return system->last_cpu; | |
638 | } | |
639 | ||
640 | INLINE_PSIM\ | |
641 | (int) | |
642 | psim_nr_cpus(psim *system) | |
643 | { | |
644 | return system->nr_cpus; | |
645 | } | |
646 | ||
647 | INLINE_PSIM\ | |
648 | (psim_status) | |
649 | psim_get_status(psim *system) | |
650 | { | |
651 | return system->halt_status; | |
652 | } | |
653 | ||
654 | ||
655 | INLINE_PSIM\ | |
656 | (cpu *) | |
657 | psim_cpu(psim *system, | |
658 | int cpu_nr) | |
659 | { | |
660 | if (cpu_nr < 0 || cpu_nr >= system->nr_cpus) | |
661 | return NULL; | |
662 | else | |
663 | return system->processors[cpu_nr]; | |
664 | } | |
665 | ||
666 | ||
667 | INLINE_PSIM\ | |
668 | (device *) | |
669 | psim_device(psim *system, | |
670 | const char *path) | |
671 | { | |
672 | return tree_find_device(system->devices, path); | |
673 | } | |
674 | ||
675 | INLINE_PSIM\ | |
676 | (event_queue *) | |
677 | psim_event_queue(psim *system) | |
678 | { | |
679 | return system->events; | |
680 | } | |
681 | ||
682 | ||
683 | ||
684 | STATIC_INLINE_PSIM\ | |
685 | (void) | |
686 | psim_max_iterations_exceeded(void *data) | |
687 | { | |
688 | psim *system = data; | |
689 | psim_halt(system, | |
690 | system->nr_cpus, /* halted during an event */ | |
691 | was_signalled, | |
692 | -1); | |
693 | } | |
694 | ||
695 | ||
696 | INLINE_PSIM\ | |
697 | (void) | |
698 | psim_init(psim *system) | |
699 | { | |
700 | int cpu_nr; | |
701 | ||
702 | /* scrub the monitor */ | |
703 | mon_init(system->monitor, system->nr_cpus); | |
704 | ||
705 | /* trash any pending events */ | |
706 | event_queue_init(system->events); | |
707 | ||
708 | /* if needed, schedule a halt event. FIXME - In the future this | |
709 | will be replaced by a more generic change to psim_command(). A | |
710 | new command `schedule NNN halt' being added. */ | |
711 | if (tree_find_property(system->devices, "/openprom/options/max-iterations")) { | |
712 | event_queue_schedule(system->events, | |
713 | tree_find_integer_property(system->devices, | |
714 | "/openprom/options/max-iterations") - 2, | |
715 | psim_max_iterations_exceeded, | |
716 | system); | |
717 | } | |
718 | ||
719 | /* scrub all the cpus */ | |
720 | for (cpu_nr = 0; cpu_nr < system->nr_cpus; cpu_nr++) | |
721 | cpu_init(system->processors[cpu_nr]); | |
722 | ||
723 | /* init all the devices (which updates the cpus) */ | |
724 | tree_init(system->devices, system); | |
725 | ||
726 | /* and the emulation (which needs an initialized device tree) */ | |
727 | os_emul_init(system->os_emulation, system->nr_cpus); | |
728 | ||
729 | /* now sync each cpu against the initialized state of its registers */ | |
730 | for (cpu_nr = 0; cpu_nr < system->nr_cpus; cpu_nr++) { | |
731 | cpu *processor = system->processors[cpu_nr]; | |
732 | cpu_synchronize_context(processor, cpu_get_program_counter(processor)); | |
733 | cpu_page_tlb_invalidate_all(processor); | |
734 | } | |
735 | ||
736 | /* force loop to start with first cpu */ | |
737 | system->last_cpu = -1; | |
738 | } | |
739 | ||
740 | INLINE_PSIM\ | |
741 | (void) | |
742 | psim_stack(psim *system, | |
743 | char **argv, | |
744 | char **envp) | |
745 | { | |
746 | /* pass the stack device the argv/envp and let it work out what to | |
747 | do with it */ | |
748 | device *stack_device = tree_find_device(system->devices, | |
749 | "/openprom/init/stack"); | |
750 | if (stack_device != (device*)0) { | |
751 | unsigned_word stack_pointer; | |
601cecf0 AC |
752 | ASSERT (psim_read_register(system, 0, &stack_pointer, "sp", |
753 | cooked_transfer) > 0); | |
c906108c SS |
754 | device_ioctl(stack_device, |
755 | NULL, /*cpu*/ | |
756 | 0, /*cia*/ | |
757 | device_ioctl_create_stack, | |
758 | stack_pointer, | |
759 | argv, | |
760 | envp); | |
761 | } | |
762 | } | |
763 | ||
764 | ||
765 | ||
766 | /* SIMULATE INSTRUCTIONS, various different ways of achieving the same | |
767 | thing */ | |
768 | ||
769 | INLINE_PSIM\ | |
770 | (void) | |
771 | psim_step(psim *system) | |
772 | { | |
773 | volatile int keep_running = 0; | |
774 | idecode_run_until_stop(system, &keep_running, | |
775 | system->events, system->processors, system->nr_cpus); | |
776 | } | |
777 | ||
778 | INLINE_PSIM\ | |
779 | (void) | |
780 | psim_run(psim *system) | |
781 | { | |
782 | idecode_run(system, | |
783 | system->events, system->processors, system->nr_cpus); | |
784 | } | |
785 | ||
786 | ||
787 | /* storage manipulation functions */ | |
788 | ||
789 | INLINE_PSIM\ | |
601cecf0 | 790 | (int) |
c906108c SS |
791 | psim_read_register(psim *system, |
792 | int which_cpu, | |
793 | void *buf, | |
794 | const char reg[], | |
795 | transfer_mode mode) | |
796 | { | |
797 | register_descriptions description; | |
601cecf0 | 798 | char *cooked_buf; |
c906108c SS |
799 | cpu *processor; |
800 | ||
801 | /* find our processor */ | |
802 | if (which_cpu == MAX_NR_PROCESSORS) { | |
803 | if (system->last_cpu == system->nr_cpus | |
804 | || system->last_cpu == -1) | |
805 | which_cpu = 0; | |
806 | else | |
807 | which_cpu = system->last_cpu; | |
808 | } | |
809 | ASSERT(which_cpu >= 0 && which_cpu < system->nr_cpus); | |
810 | ||
811 | processor = system->processors[which_cpu]; | |
812 | ||
813 | /* find the register description */ | |
814 | description = register_description(reg); | |
815 | if (description.type == reg_invalid) | |
601cecf0 AC |
816 | return 0; |
817 | cooked_buf = alloca (description.size); | |
c906108c SS |
818 | |
819 | /* get the cooked value */ | |
820 | switch (description.type) { | |
821 | ||
822 | case reg_gpr: | |
823 | *(gpreg*)cooked_buf = cpu_registers(processor)->gpr[description.index]; | |
824 | break; | |
825 | ||
826 | case reg_spr: | |
827 | *(spreg*)cooked_buf = cpu_registers(processor)->spr[description.index]; | |
828 | break; | |
829 | ||
830 | case reg_sr: | |
831 | *(sreg*)cooked_buf = cpu_registers(processor)->sr[description.index]; | |
832 | break; | |
833 | ||
834 | case reg_fpr: | |
835 | *(fpreg*)cooked_buf = cpu_registers(processor)->fpr[description.index]; | |
836 | break; | |
837 | ||
838 | case reg_pc: | |
839 | *(unsigned_word*)cooked_buf = cpu_get_program_counter(processor); | |
840 | break; | |
841 | ||
842 | case reg_cr: | |
843 | *(creg*)cooked_buf = cpu_registers(processor)->cr; | |
844 | break; | |
845 | ||
846 | case reg_msr: | |
847 | *(msreg*)cooked_buf = cpu_registers(processor)->msr; | |
848 | break; | |
849 | ||
850 | case reg_fpscr: | |
851 | *(fpscreg*)cooked_buf = cpu_registers(processor)->fpscr; | |
852 | break; | |
853 | ||
854 | case reg_insns: | |
855 | *(unsigned_word*)cooked_buf = mon_get_number_of_insns(system->monitor, | |
856 | which_cpu); | |
857 | break; | |
858 | ||
859 | case reg_stalls: | |
860 | if (cpu_model(processor) == NULL) | |
861 | error("$stalls only valid if processor unit model enabled (-I)\n"); | |
862 | *(unsigned_word*)cooked_buf = model_get_number_of_stalls(cpu_model(processor)); | |
863 | break; | |
864 | ||
865 | case reg_cycles: | |
866 | if (cpu_model(processor) == NULL) | |
867 | error("$cycles only valid if processor unit model enabled (-I)\n"); | |
868 | *(unsigned_word*)cooked_buf = model_get_number_of_cycles(cpu_model(processor)); | |
869 | break; | |
870 | ||
345d88d9 AC |
871 | #ifdef WITH_ALTIVEC |
872 | case reg_vr: | |
873 | *(vreg*)cooked_buf = cpu_registers(processor)->altivec.vr[description.index]; | |
874 | break; | |
875 | ||
876 | case reg_vscr: | |
877 | *(vscreg*)cooked_buf = cpu_registers(processor)->altivec.vscr; | |
878 | break; | |
879 | #endif | |
880 | ||
881 | #ifdef WITH_E500 | |
882 | case reg_gprh: | |
883 | *(gpreg*)cooked_buf = cpu_registers(processor)->e500.gprh[description.index]; | |
884 | break; | |
885 | ||
886 | case reg_evr: | |
887 | *(unsigned64*)cooked_buf = EVR(description.index); | |
888 | break; | |
889 | ||
890 | case reg_acc: | |
891 | *(accreg*)cooked_buf = cpu_registers(processor)->e500.acc; | |
892 | break; | |
893 | #endif | |
894 | ||
c906108c SS |
895 | default: |
896 | printf_filtered("psim_read_register(processor=0x%lx,buf=0x%lx,reg=%s) %s\n", | |
897 | (unsigned long)processor, (unsigned long)buf, reg, | |
898 | "read of this register unimplemented"); | |
899 | break; | |
900 | ||
901 | } | |
902 | ||
903 | /* the PSIM internal values are in host order. To fetch raw data, | |
904 | they need to be converted into target order and then returned */ | |
905 | if (mode == raw_transfer) { | |
906 | /* FIXME - assumes that all registers are simple integers */ | |
907 | switch (description.size) { | |
908 | case 1: | |
909 | *(unsigned_1*)buf = H2T_1(*(unsigned_1*)cooked_buf); | |
910 | break; | |
911 | case 2: | |
912 | *(unsigned_2*)buf = H2T_2(*(unsigned_2*)cooked_buf); | |
913 | break; | |
914 | case 4: | |
915 | *(unsigned_4*)buf = H2T_4(*(unsigned_4*)cooked_buf); | |
916 | break; | |
917 | case 8: | |
918 | *(unsigned_8*)buf = H2T_8(*(unsigned_8*)cooked_buf); | |
919 | break; | |
345d88d9 AC |
920 | #ifdef WITH_ALTIVEC |
921 | case 16: | |
922 | if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER) | |
923 | { | |
924 | union { vreg v; unsigned_8 d[2]; } h, t; | |
925 | memcpy(&h.v/*dest*/, cooked_buf/*src*/, description.size); | |
926 | { _SWAP_8(t.d[0] =, h.d[1]); } | |
927 | { _SWAP_8(t.d[1] =, h.d[0]); } | |
928 | memcpy(buf/*dest*/, &t/*src*/, description.size); | |
929 | break; | |
930 | } | |
931 | else | |
932 | memcpy(buf/*dest*/, cooked_buf/*src*/, description.size); | |
933 | break; | |
934 | #endif | |
c906108c SS |
935 | } |
936 | } | |
937 | else { | |
938 | memcpy(buf/*dest*/, cooked_buf/*src*/, description.size); | |
939 | } | |
940 | ||
601cecf0 | 941 | return description.size; |
c906108c SS |
942 | } |
943 | ||
944 | ||
945 | ||
946 | INLINE_PSIM\ | |
601cecf0 | 947 | (int) |
c906108c SS |
948 | psim_write_register(psim *system, |
949 | int which_cpu, | |
950 | const void *buf, | |
951 | const char reg[], | |
952 | transfer_mode mode) | |
953 | { | |
954 | cpu *processor; | |
955 | register_descriptions description; | |
601cecf0 | 956 | char *cooked_buf; |
c906108c SS |
957 | |
958 | /* find our processor */ | |
959 | if (which_cpu == MAX_NR_PROCESSORS) { | |
960 | if (system->last_cpu == system->nr_cpus | |
961 | || system->last_cpu == -1) | |
962 | which_cpu = 0; | |
963 | else | |
964 | which_cpu = system->last_cpu; | |
965 | } | |
601cecf0 AC |
966 | |
967 | /* find the description of the register */ | |
968 | description = register_description(reg); | |
969 | if (description.type == reg_invalid) | |
970 | return 0; | |
971 | cooked_buf = alloca (description.size); | |
972 | ||
c906108c SS |
973 | if (which_cpu == -1) { |
974 | int i; | |
975 | for (i = 0; i < system->nr_cpus; i++) | |
976 | psim_write_register(system, i, buf, reg, mode); | |
601cecf0 | 977 | return description.size; |
c906108c SS |
978 | } |
979 | ASSERT(which_cpu >= 0 && which_cpu < system->nr_cpus); | |
980 | ||
981 | processor = system->processors[which_cpu]; | |
982 | ||
c906108c SS |
983 | /* If the data is comming in raw (target order), need to cook it |
984 | into host order before putting it into PSIM's internal structures */ | |
985 | if (mode == raw_transfer) { | |
986 | switch (description.size) { | |
987 | case 1: | |
988 | *(unsigned_1*)cooked_buf = T2H_1(*(unsigned_1*)buf); | |
989 | break; | |
990 | case 2: | |
991 | *(unsigned_2*)cooked_buf = T2H_2(*(unsigned_2*)buf); | |
992 | break; | |
993 | case 4: | |
994 | *(unsigned_4*)cooked_buf = T2H_4(*(unsigned_4*)buf); | |
995 | break; | |
996 | case 8: | |
997 | *(unsigned_8*)cooked_buf = T2H_8(*(unsigned_8*)buf); | |
998 | break; | |
345d88d9 AC |
999 | #ifdef WITH_ALTIVEC |
1000 | case 16: | |
1001 | if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER) | |
1002 | { | |
1003 | union { vreg v; unsigned_8 d[2]; } h, t; | |
1004 | memcpy(&t.v/*dest*/, buf/*src*/, description.size); | |
1005 | { _SWAP_8(h.d[0] =, t.d[1]); } | |
1006 | { _SWAP_8(h.d[1] =, t.d[0]); } | |
1007 | memcpy(cooked_buf/*dest*/, &h/*src*/, description.size); | |
1008 | break; | |
1009 | } | |
1010 | else | |
1011 | memcpy(cooked_buf/*dest*/, buf/*src*/, description.size); | |
1012 | #endif | |
c906108c SS |
1013 | } |
1014 | } | |
1015 | else { | |
1016 | memcpy(cooked_buf/*dest*/, buf/*src*/, description.size); | |
1017 | } | |
1018 | ||
1019 | /* put the cooked value into the register */ | |
1020 | switch (description.type) { | |
1021 | ||
1022 | case reg_gpr: | |
1023 | cpu_registers(processor)->gpr[description.index] = *(gpreg*)cooked_buf; | |
1024 | break; | |
1025 | ||
1026 | case reg_fpr: | |
1027 | cpu_registers(processor)->fpr[description.index] = *(fpreg*)cooked_buf; | |
1028 | break; | |
1029 | ||
1030 | case reg_pc: | |
1031 | cpu_set_program_counter(processor, *(unsigned_word*)cooked_buf); | |
1032 | break; | |
1033 | ||
1034 | case reg_spr: | |
1035 | cpu_registers(processor)->spr[description.index] = *(spreg*)cooked_buf; | |
1036 | break; | |
1037 | ||
1038 | case reg_sr: | |
1039 | cpu_registers(processor)->sr[description.index] = *(sreg*)cooked_buf; | |
1040 | break; | |
1041 | ||
1042 | case reg_cr: | |
1043 | cpu_registers(processor)->cr = *(creg*)cooked_buf; | |
1044 | break; | |
1045 | ||
1046 | case reg_msr: | |
1047 | cpu_registers(processor)->msr = *(msreg*)cooked_buf; | |
1048 | break; | |
1049 | ||
1050 | case reg_fpscr: | |
1051 | cpu_registers(processor)->fpscr = *(fpscreg*)cooked_buf; | |
1052 | break; | |
1053 | ||
345d88d9 AC |
1054 | #ifdef WITH_E500 |
1055 | case reg_gprh: | |
1056 | cpu_registers(processor)->e500.gprh[description.index] = *(gpreg*)cooked_buf; | |
1057 | break; | |
1058 | ||
1059 | case reg_evr: | |
1060 | { | |
1061 | unsigned64 v; | |
1062 | v = *(unsigned64*)cooked_buf; | |
1063 | cpu_registers(processor)->e500.gprh[description.index] = v >> 32; | |
1064 | cpu_registers(processor)->gpr[description.index] = v; | |
1065 | break; | |
1066 | } | |
1067 | ||
1068 | case reg_acc: | |
1069 | cpu_registers(processor)->e500.acc = *(accreg*)cooked_buf; | |
1070 | break; | |
1071 | #endif | |
1072 | ||
1073 | #ifdef WITH_ALTIVEC | |
1074 | case reg_vr: | |
1075 | cpu_registers(processor)->altivec.vr[description.index] = *(vreg*)cooked_buf; | |
1076 | break; | |
1077 | ||
1078 | case reg_vscr: | |
1079 | cpu_registers(processor)->altivec.vscr = *(vscreg*)cooked_buf; | |
1080 | break; | |
1081 | #endif | |
1082 | ||
c906108c SS |
1083 | default: |
1084 | printf_filtered("psim_write_register(processor=0x%lx,cooked_buf=0x%lx,reg=%s) %s\n", | |
1085 | (unsigned long)processor, (unsigned long)cooked_buf, reg, | |
1086 | "read of this register unimplemented"); | |
1087 | break; | |
1088 | ||
1089 | } | |
1090 | ||
601cecf0 | 1091 | return description.size; |
c906108c SS |
1092 | } |
1093 | ||
1094 | ||
1095 | ||
1096 | INLINE_PSIM\ | |
1097 | (unsigned) | |
1098 | psim_read_memory(psim *system, | |
1099 | int which_cpu, | |
1100 | void *buffer, | |
1101 | unsigned_word vaddr, | |
1102 | unsigned nr_bytes) | |
1103 | { | |
1104 | cpu *processor; | |
1105 | if (which_cpu == MAX_NR_PROCESSORS) { | |
1106 | if (system->last_cpu == system->nr_cpus | |
1107 | || system->last_cpu == -1) | |
1108 | which_cpu = 0; | |
1109 | else | |
1110 | which_cpu = system->last_cpu; | |
1111 | } | |
1112 | processor = system->processors[which_cpu]; | |
1113 | return vm_data_map_read_buffer(cpu_data_map(processor), | |
1114 | buffer, vaddr, nr_bytes, | |
1115 | NULL, -1); | |
1116 | } | |
1117 | ||
1118 | ||
1119 | INLINE_PSIM\ | |
1120 | (unsigned) | |
1121 | psim_write_memory(psim *system, | |
1122 | int which_cpu, | |
1123 | const void *buffer, | |
1124 | unsigned_word vaddr, | |
1125 | unsigned nr_bytes, | |
1126 | int violate_read_only_section) | |
1127 | { | |
1128 | cpu *processor; | |
1129 | if (which_cpu == MAX_NR_PROCESSORS) { | |
1130 | if (system->last_cpu == system->nr_cpus | |
1131 | || system->last_cpu == -1) | |
1132 | which_cpu = 0; | |
1133 | else | |
1134 | which_cpu = system->last_cpu; | |
1135 | } | |
1136 | ASSERT(which_cpu >= 0 && which_cpu < system->nr_cpus); | |
1137 | processor = system->processors[which_cpu]; | |
1138 | return vm_data_map_write_buffer(cpu_data_map(processor), | |
1139 | buffer, vaddr, nr_bytes, 1/*violate-read-only*/, | |
1140 | NULL, -1); | |
1141 | } | |
1142 | ||
1143 | ||
1144 | INLINE_PSIM\ | |
1145 | (void) | |
1146 | psim_print_info(psim *system, | |
1147 | int verbose) | |
1148 | { | |
1149 | mon_print_info(system, system->monitor, verbose); | |
1150 | } | |
1151 | ||
1152 | ||
1153 | /* Merge a device tree and a device file. */ | |
1154 | ||
1155 | INLINE_PSIM\ | |
1156 | (void) | |
1157 | psim_merge_device_file(device *root, | |
1158 | const char *file_name) | |
1159 | { | |
1160 | FILE *description; | |
1161 | int line_nr; | |
1162 | char device_path[1000]; | |
1163 | device *current; | |
1164 | ||
1165 | /* try opening the file */ | |
1166 | description = fopen(file_name, "r"); | |
1167 | if (description == NULL) { | |
1168 | perror(file_name); | |
1169 | error("Invalid file %s specified", file_name); | |
1170 | } | |
1171 | ||
1172 | line_nr = 0; | |
1173 | current = root; | |
1174 | while (fgets(device_path, sizeof(device_path), description)) { | |
1175 | char *device; | |
1176 | /* check that the full line was read */ | |
1177 | if (strchr(device_path, '\n') == NULL) { | |
1178 | fclose(description); | |
1179 | error("%s:%d: line to long - %s", | |
1180 | file_name, line_nr, device_path); | |
1181 | } | |
1182 | else | |
1183 | *strchr(device_path, '\n') = '\0'; | |
1184 | line_nr++; | |
1185 | /* skip comments ("#" or ";") and blank lines lines */ | |
1186 | for (device = device_path; | |
1187 | *device != '\0' && isspace(*device); | |
1188 | device++); | |
1189 | if (device[0] == '#' | |
1190 | || device[0] == ';' | |
1191 | || device[0] == '\0') | |
1192 | continue; | |
1193 | /* merge any appended lines */ | |
1194 | while (device_path[strlen(device_path) - 1] == '\\') { | |
1195 | int curlen = strlen(device_path) - 1; | |
1196 | /* zap \ */ | |
1197 | device_path[curlen] = '\0'; | |
1198 | /* append the next line */ | |
1199 | if (!fgets(device_path + curlen, sizeof(device_path) - curlen, description)) { | |
1200 | fclose(description); | |
1201 | error("%s:%s: unexpected eof in line continuation - %s", | |
1202 | file_name, line_nr, device_path); | |
1203 | } | |
1204 | if (strchr(device_path, '\n') == NULL) { | |
1205 | fclose(description); | |
1206 | error("%s:%d: line to long - %s", | |
1207 | file_name, line_nr, device_path); | |
1208 | } | |
1209 | else | |
1210 | *strchr(device_path, '\n') = '\0'; | |
1211 | line_nr++; | |
1212 | } | |
1213 | /* parse this line */ | |
1214 | current = tree_parse(current, "%s", device); | |
1215 | } | |
1216 | fclose(description); | |
1217 | } | |
1218 | ||
1219 | ||
1220 | #endif /* _PSIM_C_ */ |