1 |
/* |
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* Copyright (C) 2003-2007 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: emul.c,v 1.278 2007/02/10 14:37:38 debug Exp $ |
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* |
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* Emulation startup and misc. routines. |
31 |
*/ |
32 |
|
33 |
#include <signal.h> |
34 |
#include <stdio.h> |
35 |
#include <stdlib.h> |
36 |
#include <limits.h> |
37 |
#include <stdarg.h> |
38 |
#include <string.h> |
39 |
#include <unistd.h> |
40 |
|
41 |
#include "arcbios.h" |
42 |
#include "cpu.h" |
43 |
#include "emul.h" |
44 |
#include "console.h" |
45 |
#include "debugger.h" |
46 |
#include "device.h" |
47 |
#include "diskimage.h" |
48 |
#include "exec_elf.h" |
49 |
#include "machine.h" |
50 |
#include "memory.h" |
51 |
#include "mips_cpu_types.h" |
52 |
#include "misc.h" |
53 |
#include "net.h" |
54 |
#include "settings.h" |
55 |
#include "sgi_arcbios.h" |
56 |
#include "timer.h" |
57 |
#include "x11.h" |
58 |
|
59 |
|
60 |
/* #define ISO_DEBUG */ |
61 |
|
62 |
|
63 |
extern int extra_argc; |
64 |
extern char **extra_argv; |
65 |
|
66 |
extern int verbose; |
67 |
extern int quiet_mode; |
68 |
extern int force_debugger_at_exit; |
69 |
extern int single_step; |
70 |
extern int old_show_trace_tree; |
71 |
extern int old_instruction_trace; |
72 |
extern int old_quiet_mode; |
73 |
extern int quiet_mode; |
74 |
|
75 |
extern struct emul *debugger_emul; |
76 |
extern struct diskimage *diskimages[]; |
77 |
|
78 |
static char *diskimage_types[] = DISKIMAGE_TYPES; |
79 |
|
80 |
|
81 |
static void print_separator(void) |
82 |
{ |
83 |
int i = 79; |
84 |
while (i-- > 0) |
85 |
debug("-"); |
86 |
debug("\n"); |
87 |
} |
88 |
|
89 |
|
90 |
/* |
91 |
* add_dump_points(): |
92 |
* |
93 |
* Take the strings breakpoint_string[] and convert to addresses |
94 |
* (and store them in breakpoint_addr[]). |
95 |
* |
96 |
* TODO: This function should be moved elsewhere. |
97 |
*/ |
98 |
static void add_dump_points(struct machine *m) |
99 |
{ |
100 |
int i; |
101 |
int string_flag; |
102 |
uint64_t dp; |
103 |
|
104 |
for (i=0; i<m->n_breakpoints; i++) { |
105 |
string_flag = 0; |
106 |
dp = strtoull(m->breakpoint_string[i], NULL, 0); |
107 |
|
108 |
/* |
109 |
* If conversion resulted in 0, then perhaps it is a |
110 |
* symbol: |
111 |
*/ |
112 |
if (dp == 0) { |
113 |
uint64_t addr; |
114 |
int res = get_symbol_addr(&m->symbol_context, |
115 |
m->breakpoint_string[i], &addr); |
116 |
if (!res) { |
117 |
fprintf(stderr, |
118 |
"ERROR! Breakpoint '%s' could not be" |
119 |
" parsed\n", |
120 |
m->breakpoint_string[i]); |
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} else { |
122 |
dp = addr; |
123 |
string_flag = 1; |
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} |
125 |
} |
126 |
|
127 |
/* |
128 |
* TODO: It would be nice if things like symbolname+0x1234 |
129 |
* were automatically converted into the correct address. |
130 |
*/ |
131 |
|
132 |
if (m->arch == ARCH_MIPS) { |
133 |
if ((dp >> 32) == 0 && ((dp >> 31) & 1)) |
134 |
dp |= 0xffffffff00000000ULL; |
135 |
} |
136 |
|
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m->breakpoint_addr[i] = dp; |
138 |
|
139 |
debug("breakpoint %i: 0x%llx", i, (long long)dp); |
140 |
if (string_flag) |
141 |
debug(" (%s)", m->breakpoint_string[i]); |
142 |
debug("\n"); |
143 |
} |
144 |
} |
145 |
|
146 |
|
147 |
/* |
148 |
* fix_console(): |
149 |
*/ |
150 |
static void fix_console(void) |
151 |
{ |
152 |
console_deinit_main(); |
153 |
} |
154 |
|
155 |
|
156 |
/* |
157 |
* iso_load_bootblock(): |
158 |
* |
159 |
* Try to load a kernel from an ISO 9660 disk image. iso_type is 1 for |
160 |
* "CD001" (standard), 2 for "CDW01" (ECMA), and 3 for "CDROM" (Sierra). |
161 |
* |
162 |
* TODO: This function uses too many magic offsets and so on; it should be |
163 |
* cleaned up some day. |
164 |
* |
165 |
* Returns 1 on success, 0 on failure. |
166 |
*/ |
167 |
static int iso_load_bootblock(struct machine *m, struct cpu *cpu, |
168 |
int disk_id, int disk_type, int iso_type, unsigned char *buf, |
169 |
int *n_loadp, char ***load_namesp) |
170 |
{ |
171 |
char str[35]; |
172 |
int filenr, i, ofs, dirlen, res = 0, res2, iadd = DEBUG_INDENTATION; |
173 |
int found_dir; |
174 |
uint64_t dirofs; |
175 |
uint64_t fileofs, filelen; |
176 |
unsigned char *dirbuf = NULL, *dp; |
177 |
unsigned char *match_entry = NULL; |
178 |
char *p, *filename_orig; |
179 |
char *filename = strdup(cpu->machine->boot_kernel_filename); |
180 |
unsigned char *filebuf = NULL; |
181 |
char *tmpfname = NULL; |
182 |
char **new_array; |
183 |
int tmpfile_handle; |
184 |
|
185 |
if (filename == NULL) { |
186 |
fatal("out of memory\n"); |
187 |
exit(1); |
188 |
} |
189 |
filename_orig = filename; |
190 |
|
191 |
debug("ISO9660 boot:\n"); |
192 |
debug_indentation(iadd); |
193 |
|
194 |
/* Volume ID: */ |
195 |
ofs = iso_type == 3? 48 : 40; |
196 |
memcpy(str, buf + ofs, sizeof(str)); |
197 |
str[32] = '\0'; i = 31; |
198 |
while (i >= 0 && str[i]==' ') |
199 |
str[i--] = '\0'; |
200 |
if (str[0]) |
201 |
debug("\"%s\"", str); |
202 |
else { |
203 |
/* System ID: */ |
204 |
ofs = iso_type == 3? 16 : 8; |
205 |
memcpy(str, buf + ofs, sizeof(str)); |
206 |
str[32] = '\0'; i = 31; |
207 |
while (i >= 0 && str[i]==' ') |
208 |
str[i--] = '\0'; |
209 |
if (str[0]) |
210 |
debug("\"%s\"", str); |
211 |
else |
212 |
debug("(no ID)"); |
213 |
} |
214 |
|
215 |
debug(":%s\n", filename); |
216 |
|
217 |
|
218 |
/* |
219 |
* Traverse the directory structure to find the kernel. |
220 |
*/ |
221 |
|
222 |
dirlen = buf[0x84] + 256*buf[0x85] + 65536*buf[0x86]; |
223 |
if (dirlen != buf[0x8b] + 256*buf[0x8a] + 65536*buf[0x89]) |
224 |
fatal("WARNING: Root directory length mismatch?\n"); |
225 |
|
226 |
dirofs = (int64_t)(buf[0x8c] + (buf[0x8d] << 8) + (buf[0x8e] << 16) + |
227 |
((uint64_t)buf[0x8f] << 24)) * 2048; |
228 |
|
229 |
#ifdef ISO_DEBUG |
230 |
debug("root = %i bytes at 0x%llx\n", dirlen, (long long)dirofs); |
231 |
#endif |
232 |
|
233 |
dirbuf = malloc(dirlen); |
234 |
if (dirbuf == NULL) { |
235 |
fatal("out of memory in iso_load_bootblock()\n"); |
236 |
exit(1); |
237 |
} |
238 |
|
239 |
res2 = diskimage_access(m, disk_id, disk_type, 0, dirofs, dirbuf, |
240 |
dirlen); |
241 |
if (!res2) { |
242 |
fatal("Couldn't read the disk image. Aborting.\n"); |
243 |
goto ret; |
244 |
} |
245 |
|
246 |
found_dir = 1; /* Assume root dir */ |
247 |
dp = dirbuf; filenr = 1; |
248 |
p = NULL; |
249 |
while (dp < dirbuf + dirlen) { |
250 |
size_t i, nlen = dp[0]; |
251 |
int x = dp[2] + (dp[3] << 8) + (dp[4] << 16) + |
252 |
((uint64_t)dp[5] << 24); |
253 |
int y = dp[6] + (dp[7] << 8); |
254 |
char direntry[65]; |
255 |
|
256 |
dp += 8; |
257 |
|
258 |
/* |
259 |
* As long as there is an \ or / in the filename, then we |
260 |
* have not yet found the directory. |
261 |
*/ |
262 |
p = strchr(filename, '/'); |
263 |
if (p == NULL) |
264 |
p = strchr(filename, '\\'); |
265 |
|
266 |
#ifdef ISO_DEBUG |
267 |
debug("%i%s: %i, %i, \"", filenr, filenr == found_dir? |
268 |
" [CURRENT]" : "", x, y); |
269 |
#endif |
270 |
for (i=0; i<nlen && i<sizeof(direntry)-1; i++) |
271 |
if (dp[i]) { |
272 |
direntry[i] = dp[i]; |
273 |
#ifdef ISO_DEBUG |
274 |
debug("%c", dp[i]); |
275 |
#endif |
276 |
} else |
277 |
break; |
278 |
#ifdef ISO_DEBUG |
279 |
debug("\"\n"); |
280 |
#endif |
281 |
direntry[i] = '\0'; |
282 |
|
283 |
/* A directory name match? */ |
284 |
if ((p != NULL && strncasecmp(filename, direntry, nlen) == 0 |
285 |
&& nlen == (size_t)p - (size_t)filename && found_dir == y) |
286 |
|| (p == NULL && direntry[0] == '\0') ) { |
287 |
found_dir = filenr; |
288 |
if (p != NULL) |
289 |
filename = p+1; |
290 |
dirofs = 2048 * (int64_t)x; |
291 |
} |
292 |
|
293 |
dp += nlen; |
294 |
|
295 |
/* 16-bit aligned lenght: */ |
296 |
if (nlen & 1) |
297 |
dp ++; |
298 |
|
299 |
filenr ++; |
300 |
} |
301 |
|
302 |
p = strchr(filename, '/'); |
303 |
if (p == NULL) |
304 |
p = strchr(filename, '\\'); |
305 |
|
306 |
if (p != NULL) { |
307 |
char *blah = filename_orig; |
308 |
|
309 |
fatal("could not find '%s' in /", filename); |
310 |
|
311 |
/* Print the first part of the filename: */ |
312 |
while (blah != filename) |
313 |
fatal("%c", *blah++); |
314 |
|
315 |
fatal("\n"); |
316 |
goto ret; |
317 |
} |
318 |
|
319 |
/* debug("dirofs = 0x%llx\n", (long long)dirofs); */ |
320 |
|
321 |
/* Free the old dirbuf, and allocate a new one: */ |
322 |
free(dirbuf); |
323 |
dirbuf = malloc(512); |
324 |
if (dirbuf == NULL) { |
325 |
fatal("out of memory in iso_load_bootblock()\n"); |
326 |
exit(1); |
327 |
} |
328 |
|
329 |
for (;;) { |
330 |
size_t len, i; |
331 |
|
332 |
/* Too close to another sector? Then realign. */ |
333 |
if ((dirofs & 2047) + 70 > 2047) { |
334 |
dirofs = (dirofs | 2047) + 1; |
335 |
/* debug("realign dirofs = 0x%llx\n", dirofs); */ |
336 |
} |
337 |
|
338 |
res2 = diskimage_access(m, disk_id, disk_type, 0, dirofs, |
339 |
dirbuf, 256); |
340 |
if (!res2) { |
341 |
fatal("Couldn't read the disk image. Aborting.\n"); |
342 |
goto ret; |
343 |
} |
344 |
|
345 |
dp = dirbuf; |
346 |
len = dp[0]; |
347 |
if (len < 2) |
348 |
break; |
349 |
|
350 |
/* |
351 |
* TODO: Actually parse the directory entry! |
352 |
* |
353 |
* Haha, this must be rewritten. |
354 |
*/ |
355 |
for (i=32; i<len; i++) { |
356 |
if (i < len - strlen(filename)) |
357 |
if (strncasecmp(filename, (char *)dp + i, |
358 |
strlen(filename)) == 0) { |
359 |
/* The filename was found somewhere |
360 |
in the directory entry. */ |
361 |
if (match_entry != NULL) { |
362 |
fatal("TODO: I'm too lazy to" |
363 |
" implement a correct " |
364 |
"directory parser right " |
365 |
"now... (BUG)\n"); |
366 |
exit(1); |
367 |
} |
368 |
match_entry = malloc(512); |
369 |
if (match_entry == NULL) { |
370 |
fatal("out of memory\n"); |
371 |
exit(1); |
372 |
} |
373 |
memcpy(match_entry, dp, 512); |
374 |
break; |
375 |
} |
376 |
} |
377 |
|
378 |
dirofs += len; |
379 |
} |
380 |
|
381 |
if (match_entry == NULL) { |
382 |
char *blah = filename_orig; |
383 |
|
384 |
fatal("could not find '%s' in /", filename); |
385 |
|
386 |
/* Print the first part of the filename: */ |
387 |
while (blah != filename) |
388 |
fatal("%c", *blah++); |
389 |
|
390 |
fatal("\n"); |
391 |
goto ret; |
392 |
} |
393 |
|
394 |
fileofs = match_entry[2] + (match_entry[3] << 8) + |
395 |
(match_entry[4] << 16) + ((uint64_t)match_entry[5] << 24); |
396 |
filelen = match_entry[10] + (match_entry[11] << 8) + |
397 |
(match_entry[12] << 16) + ((uint64_t)match_entry[13] << 24); |
398 |
fileofs *= 2048; |
399 |
|
400 |
/* debug("filelen=%llx fileofs=%llx\n", (long long)filelen, |
401 |
(long long)fileofs); */ |
402 |
|
403 |
filebuf = malloc(filelen); |
404 |
if (filebuf == NULL) { |
405 |
fatal("could not allocate %lli bytes to read the file" |
406 |
" from the disk image!\n", (long long)filelen); |
407 |
goto ret; |
408 |
} |
409 |
|
410 |
tmpfname = strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
411 |
|
412 |
res2 = diskimage_access(m, disk_id, disk_type, 0, fileofs, filebuf, |
413 |
filelen); |
414 |
if (!res2) { |
415 |
fatal("could not read the file from the disk image!\n"); |
416 |
goto ret; |
417 |
} |
418 |
|
419 |
tmpfile_handle = mkstemp(tmpfname); |
420 |
if (tmpfile_handle < 0) { |
421 |
fatal("could not create %s\n", tmpfname); |
422 |
exit(1); |
423 |
} |
424 |
write(tmpfile_handle, filebuf, filelen); |
425 |
close(tmpfile_handle); |
426 |
|
427 |
debug("extracted %lli bytes into %s\n", (long long)filelen, tmpfname); |
428 |
|
429 |
/* Add the temporary filename to the load_namesp array: */ |
430 |
(*n_loadp)++; |
431 |
new_array = malloc(sizeof(char *) * (*n_loadp)); |
432 |
if (new_array == NULL) { |
433 |
fatal("out of memory\n"); |
434 |
exit(1); |
435 |
} |
436 |
memcpy(new_array, *load_namesp, sizeof(char *) * (*n_loadp)); |
437 |
*load_namesp = new_array; |
438 |
|
439 |
/* This adds a Backspace char in front of the filename; this |
440 |
is a special hack which causes the file to be removed once |
441 |
it has been loaded. */ |
442 |
tmpfname = realloc(tmpfname, strlen(tmpfname) + 2); |
443 |
memmove(tmpfname + 1, tmpfname, strlen(tmpfname) + 1); |
444 |
tmpfname[0] = 8; |
445 |
|
446 |
(*load_namesp)[*n_loadp - 1] = tmpfname; |
447 |
|
448 |
res = 1; |
449 |
|
450 |
ret: |
451 |
if (dirbuf != NULL) |
452 |
free(dirbuf); |
453 |
|
454 |
if (filebuf != NULL) |
455 |
free(filebuf); |
456 |
|
457 |
if (match_entry != NULL) |
458 |
free(match_entry); |
459 |
|
460 |
free(filename_orig); |
461 |
|
462 |
debug_indentation(-iadd); |
463 |
return res; |
464 |
} |
465 |
|
466 |
|
467 |
/* |
468 |
* apple_load_bootblock(): |
469 |
* |
470 |
* Try to load a kernel from a disk image with an Apple Partition Table. |
471 |
* |
472 |
* TODO: This function uses too many magic offsets and so on; it should be |
473 |
* cleaned up some day. See http://www.awprofessional.com/articles/ |
474 |
* article.asp?p=376123&seqNum=3&rl=1 for some info on the Apple |
475 |
* partition format. |
476 |
* |
477 |
* Returns 1 on success, 0 on failure. |
478 |
*/ |
479 |
static int apple_load_bootblock(struct machine *m, struct cpu *cpu, |
480 |
int disk_id, int disk_type, int *n_loadp, char ***load_namesp) |
481 |
{ |
482 |
unsigned char buf[0x8000]; |
483 |
int res, partnr, n_partitions = 0, n_hfs_partitions = 0; |
484 |
uint64_t hfs_start, hfs_length; |
485 |
|
486 |
res = diskimage_access(m, disk_id, disk_type, 0, 0x0, buf, sizeof(buf)); |
487 |
if (!res) { |
488 |
fatal("apple_load_bootblock: couldn't read the disk " |
489 |
"image. Aborting.\n"); |
490 |
return 0; |
491 |
} |
492 |
|
493 |
partnr = 0; |
494 |
do { |
495 |
int start, length; |
496 |
int ofs = 0x200 * (partnr + 1); |
497 |
if (partnr == 0) |
498 |
n_partitions = buf[ofs + 7]; |
499 |
start = ((uint64_t)buf[ofs + 8] << 24) + (buf[ofs + 9] << 16) + |
500 |
(buf[ofs + 10] << 8) + buf[ofs + 11]; |
501 |
length = ((uint64_t)buf[ofs+12] << 24) + (buf[ofs + 13] << 16) + |
502 |
(buf[ofs + 14] << 8) + buf[ofs + 15]; |
503 |
|
504 |
debug("partition %i: '%s', type '%s', start %i, length %i\n", |
505 |
partnr, buf + ofs + 0x10, buf + ofs + 0x30, |
506 |
start, length); |
507 |
|
508 |
if (strcmp((char *)buf + ofs + 0x30, "Apple_HFS") == 0) { |
509 |
n_hfs_partitions ++; |
510 |
hfs_start = 512 * start; |
511 |
hfs_length = 512 * length; |
512 |
} |
513 |
|
514 |
/* Any more partitions? */ |
515 |
partnr ++; |
516 |
} while (partnr < n_partitions); |
517 |
|
518 |
if (n_hfs_partitions == 0) { |
519 |
fatal("Error: No HFS partition found! TODO\n"); |
520 |
return 0; |
521 |
} |
522 |
if (n_hfs_partitions >= 2) { |
523 |
fatal("Error: Too many HFS partitions found! TODO\n"); |
524 |
return 0; |
525 |
} |
526 |
|
527 |
return 0; |
528 |
} |
529 |
|
530 |
|
531 |
/* |
532 |
* load_bootblock(): |
533 |
* |
534 |
* For some emulation modes, it is possible to boot from a harddisk image by |
535 |
* loading a bootblock from a specific disk offset into memory, and executing |
536 |
* that, instead of requiring a separate kernel file. It is then up to the |
537 |
* bootblock to load a kernel. |
538 |
* |
539 |
* Returns 1 on success, 0 on failure. |
540 |
*/ |
541 |
static int load_bootblock(struct machine *m, struct cpu *cpu, |
542 |
int *n_loadp, char ***load_namesp) |
543 |
{ |
544 |
int boot_disk_id, boot_disk_type = 0, n_blocks, res, readofs, |
545 |
iso_type, retval = 0; |
546 |
unsigned char minibuf[0x20]; |
547 |
unsigned char *bootblock_buf; |
548 |
uint64_t bootblock_offset, base_offset; |
549 |
uint64_t bootblock_loadaddr, bootblock_pc; |
550 |
|
551 |
boot_disk_id = diskimage_bootdev(m, &boot_disk_type); |
552 |
if (boot_disk_id < 0) |
553 |
return 0; |
554 |
|
555 |
base_offset = diskimage_get_baseoffset(m, boot_disk_id, boot_disk_type); |
556 |
|
557 |
switch (m->machine_type) { |
558 |
|
559 |
case MACHINE_DREAMCAST: |
560 |
if (!diskimage_is_a_cdrom(cpu->machine, boot_disk_id, |
561 |
boot_disk_type)) { |
562 |
fatal("The Dreamcast emulation mode can only boot" |
563 |
" from CD images, not from other disk types.\n"); |
564 |
exit(1); |
565 |
} |
566 |
|
567 |
bootblock_buf = malloc(32768); |
568 |
if (bootblock_buf == NULL) { |
569 |
fprintf(stderr, "Out of memory.\n"); |
570 |
exit(1); |
571 |
} |
572 |
|
573 |
debug("loading Dreamcast IP.BIN from %s id %i\n", |
574 |
diskimage_types[boot_disk_type], boot_disk_id); |
575 |
|
576 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
577 |
0, base_offset, bootblock_buf, 0x8000); |
578 |
if (!res) { |
579 |
fatal("Couldn't read the disk image. Aborting.\n"); |
580 |
return 0; |
581 |
} |
582 |
|
583 |
if (strncmp((char *)bootblock_buf, "SEGA ", 5) != 0) { |
584 |
fatal("This is not a Dreamcast IP.BIN header.\n"); |
585 |
free(bootblock_buf); |
586 |
return 0; |
587 |
} |
588 |
|
589 |
/* Store IP.BIN at 0x8c008000, and set entry point. */ |
590 |
store_buf(cpu, 0x8c008000, (char *)bootblock_buf, 32768); |
591 |
cpu->pc = 0x8c008300; |
592 |
|
593 |
/* Remember the name of the file to boot (1ST_READ.BIN): */ |
594 |
if (cpu->machine->boot_kernel_filename == NULL || |
595 |
cpu->machine->boot_kernel_filename[0] == '\0') { |
596 |
int i = 0x60; |
597 |
while (i < 0x70) { |
598 |
if (bootblock_buf[i] == ' ') |
599 |
bootblock_buf[i] = 0; |
600 |
i ++; |
601 |
} |
602 |
cpu->machine->boot_kernel_filename = strdup( |
603 |
(char *)bootblock_buf + 0x60); |
604 |
} |
605 |
|
606 |
debug("boot filename: %s\n", |
607 |
cpu->machine->boot_kernel_filename); |
608 |
|
609 |
free(bootblock_buf); |
610 |
|
611 |
break; |
612 |
|
613 |
case MACHINE_PMAX: |
614 |
/* |
615 |
* The first few bytes of a disk contains information about |
616 |
* where the bootblock(s) are located. (These are all 32-bit |
617 |
* little-endian words.) |
618 |
* |
619 |
* Offset 0x10 = load address |
620 |
* 0x14 = initial PC value |
621 |
* 0x18 = nr of 512-byte blocks to read |
622 |
* 0x1c = offset on disk to where the bootblocks |
623 |
* are (in 512-byte units) |
624 |
* 0x20 = nr of blocks to read... |
625 |
* 0x24 = offset... |
626 |
* |
627 |
* nr of blocks to read and offset are repeated until nr of |
628 |
* blocks to read is zero. |
629 |
*/ |
630 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, 0, 0, |
631 |
minibuf, sizeof(minibuf)); |
632 |
|
633 |
bootblock_loadaddr = minibuf[0x10] + (minibuf[0x11] << 8) |
634 |
+ (minibuf[0x12] << 16) + ((uint64_t)minibuf[0x13] << 24); |
635 |
|
636 |
/* Convert loadaddr to uncached: */ |
637 |
if ((bootblock_loadaddr & 0xf0000000ULL) != 0x80000000 && |
638 |
(bootblock_loadaddr & 0xf0000000ULL) != 0xa0000000) { |
639 |
fatal("\nWARNING! Weird load address 0x%08"PRIx32 |
640 |
" for SCSI id %i.\n\n", |
641 |
(uint32_t)bootblock_loadaddr, boot_disk_id); |
642 |
if (bootblock_loadaddr == 0) { |
643 |
fatal("I'm assuming that this is _not_ a " |
644 |
"DEC bootblock.\nAre you sure you are" |
645 |
" booting from the correct disk?\n"); |
646 |
exit(1); |
647 |
} |
648 |
} |
649 |
|
650 |
bootblock_loadaddr &= 0x0fffffffULL; |
651 |
bootblock_loadaddr |= 0xffffffffa0000000ULL; |
652 |
|
653 |
bootblock_pc = minibuf[0x14] + (minibuf[0x15] << 8) |
654 |
+ (minibuf[0x16] << 16) + ((uint64_t)minibuf[0x17] << 24); |
655 |
|
656 |
bootblock_pc &= 0x0fffffffULL; |
657 |
bootblock_pc |= 0xffffffffa0000000ULL; |
658 |
cpu->pc = bootblock_pc; |
659 |
|
660 |
debug("DEC boot: loadaddr=0x%08x, pc=0x%08x", |
661 |
(int)bootblock_loadaddr, (int)bootblock_pc); |
662 |
|
663 |
readofs = 0x18; |
664 |
|
665 |
for (;;) { |
666 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
667 |
0, readofs, minibuf, sizeof(minibuf)); |
668 |
if (!res) { |
669 |
fatal("Couldn't read the disk image. " |
670 |
"Aborting.\n"); |
671 |
return 0; |
672 |
} |
673 |
|
674 |
n_blocks = minibuf[0] + (minibuf[1] << 8) |
675 |
+ (minibuf[2] << 16) + ((uint64_t)minibuf[3] << 24); |
676 |
|
677 |
bootblock_offset = (minibuf[4] + (minibuf[5] << 8) + |
678 |
(minibuf[6]<<16) + ((uint64_t)minibuf[7]<<24)) * 512; |
679 |
|
680 |
if (n_blocks < 1) |
681 |
break; |
682 |
|
683 |
debug(readofs == 0x18? ": %i" : " + %i", n_blocks); |
684 |
|
685 |
if (n_blocks * 512 > 65536) |
686 |
fatal("\nWARNING! Unusually large bootblock " |
687 |
"(%i bytes)\n\n", n_blocks * 512); |
688 |
|
689 |
bootblock_buf = malloc(n_blocks * 512); |
690 |
if (bootblock_buf == NULL) { |
691 |
fprintf(stderr, "out of memory in " |
692 |
"load_bootblock()\n"); |
693 |
exit(1); |
694 |
} |
695 |
|
696 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
697 |
0, bootblock_offset, bootblock_buf, n_blocks * 512); |
698 |
if (!res) { |
699 |
fatal("WARNING: could not load bootblocks from" |
700 |
" disk offset 0x%llx\n", |
701 |
(long long)bootblock_offset); |
702 |
} |
703 |
|
704 |
store_buf(cpu, bootblock_loadaddr, |
705 |
(char *)bootblock_buf, n_blocks * 512); |
706 |
|
707 |
bootblock_loadaddr += 512*n_blocks; |
708 |
free(bootblock_buf); |
709 |
readofs += 8; |
710 |
} |
711 |
|
712 |
debug(readofs == 0x18? ": no blocks?\n" : " blocks\n"); |
713 |
return 1; |
714 |
} |
715 |
|
716 |
|
717 |
/* |
718 |
* Try reading a kernel manually from the disk. The code here |
719 |
* does not rely on machine-dependent boot blocks etc. |
720 |
*/ |
721 |
/* ISO9660: (0x800 bytes at 0x8000 + base_offset) */ |
722 |
bootblock_buf = malloc(0x800); |
723 |
if (bootblock_buf == NULL) { |
724 |
fprintf(stderr, "Out of memory.\n"); |
725 |
exit(1); |
726 |
} |
727 |
|
728 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
729 |
0, base_offset + 0x8000, bootblock_buf, 0x800); |
730 |
if (!res) { |
731 |
fatal("Couldn't read the disk image. Aborting.\n"); |
732 |
return 0; |
733 |
} |
734 |
|
735 |
iso_type = 0; |
736 |
if (strncmp((char *)bootblock_buf+1, "CD001", 5) == 0) |
737 |
iso_type = 1; |
738 |
if (strncmp((char *)bootblock_buf+1, "CDW01", 5) == 0) |
739 |
iso_type = 2; |
740 |
if (strncmp((char *)bootblock_buf+1, "CDROM", 5) == 0) |
741 |
iso_type = 3; |
742 |
|
743 |
if (iso_type != 0) { |
744 |
/* |
745 |
* If the user specified a kernel name, then load it from |
746 |
* disk. |
747 |
*/ |
748 |
if (cpu->machine->boot_kernel_filename == NULL || |
749 |
cpu->machine->boot_kernel_filename[0] == '\0') |
750 |
fatal("\nISO9660 filesystem, but no kernel " |
751 |
"specified? (Use the -j option.)\n"); |
752 |
else |
753 |
retval = iso_load_bootblock(m, cpu, boot_disk_id, |
754 |
boot_disk_type, iso_type, bootblock_buf, |
755 |
n_loadp, load_namesp); |
756 |
} |
757 |
|
758 |
if (retval != 0) |
759 |
goto ret_ok; |
760 |
|
761 |
/* Apple parition table: */ |
762 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
763 |
0, 0x0, bootblock_buf, 0x800); |
764 |
if (!res) { |
765 |
fatal("Couldn't read the disk image. Aborting.\n"); |
766 |
return 0; |
767 |
} |
768 |
if (bootblock_buf[0x000] == 'E' && bootblock_buf[0x001] == 'R' && |
769 |
bootblock_buf[0x200] == 'P' && bootblock_buf[0x201] == 'M') { |
770 |
if (cpu->machine->boot_kernel_filename == NULL || |
771 |
cpu->machine->boot_kernel_filename[0] == '\0') |
772 |
fatal("\nApple partition table, but no kernel " |
773 |
"specified? (Use the -j option.)\n"); |
774 |
else |
775 |
retval = apple_load_bootblock(m, cpu, boot_disk_id, |
776 |
boot_disk_type, n_loadp, load_namesp); |
777 |
} |
778 |
|
779 |
ret_ok: |
780 |
free(bootblock_buf); |
781 |
return retval; |
782 |
} |
783 |
|
784 |
|
785 |
/* |
786 |
* emul_new(): |
787 |
* |
788 |
* Returns a reasonably initialized struct emul. |
789 |
*/ |
790 |
struct emul *emul_new(char *name, int id) |
791 |
{ |
792 |
struct emul *e; |
793 |
e = malloc(sizeof(struct emul)); |
794 |
if (e == NULL) { |
795 |
fprintf(stderr, "out of memory in emul_new()\n"); |
796 |
exit(1); |
797 |
} |
798 |
|
799 |
memset(e, 0, sizeof(struct emul)); |
800 |
|
801 |
e->path = malloc(15); |
802 |
if (e->path == NULL) { |
803 |
fprintf(stderr, "out of memory\n"); |
804 |
exit(1); |
805 |
} |
806 |
snprintf(e->path, 15, "emul[%i]", id); |
807 |
|
808 |
e->settings = settings_new(); |
809 |
|
810 |
settings_add(e->settings, "n_machines", 0, |
811 |
SETTINGS_TYPE_INT, SETTINGS_FORMAT_DECIMAL, |
812 |
(void *) &e->n_machines); |
813 |
|
814 |
/* TODO: More settings? */ |
815 |
|
816 |
/* Sane default values: */ |
817 |
e->n_machines = 0; |
818 |
e->next_serial_nr = 1; |
819 |
|
820 |
if (name != NULL) { |
821 |
e->name = strdup(name); |
822 |
if (e->name == NULL) { |
823 |
fprintf(stderr, "out of memory in emul_new()\n"); |
824 |
exit(1); |
825 |
} |
826 |
|
827 |
settings_add(e->settings, "name", 0, |
828 |
SETTINGS_TYPE_STRING, SETTINGS_FORMAT_STRING, |
829 |
(void *) &e->name); |
830 |
} |
831 |
|
832 |
return e; |
833 |
} |
834 |
|
835 |
|
836 |
/* |
837 |
* emul_destroy(): |
838 |
* |
839 |
* Destroys a previously created emul object. |
840 |
*/ |
841 |
void emul_destroy(struct emul *emul) |
842 |
{ |
843 |
int i; |
844 |
|
845 |
if (emul->name != NULL) { |
846 |
settings_remove(emul->settings, "name"); |
847 |
free(emul->name); |
848 |
} |
849 |
|
850 |
for (i=0; i<emul->n_machines; i++) |
851 |
machine_destroy(emul->machines[i]); |
852 |
|
853 |
if (emul->machines != NULL) |
854 |
free(emul->machines); |
855 |
|
856 |
/* Remove any remaining level-1 settings: */ |
857 |
settings_remove_all(emul->settings); |
858 |
settings_destroy(emul->settings); |
859 |
|
860 |
free(emul); |
861 |
} |
862 |
|
863 |
|
864 |
/* |
865 |
* emul_add_machine(): |
866 |
* |
867 |
* Calls machine_new(), adds the new machine into the emul struct, and |
868 |
* returns a pointer to the new machine. |
869 |
* |
870 |
* This function should be used instead of manually calling machine_new(). |
871 |
*/ |
872 |
struct machine *emul_add_machine(struct emul *e, char *name) |
873 |
{ |
874 |
struct machine *m; |
875 |
char tmpstr[20]; |
876 |
int i; |
877 |
|
878 |
m = machine_new(name, e, e->n_machines); |
879 |
m->serial_nr = (e->next_serial_nr ++); |
880 |
|
881 |
i = e->n_machines; |
882 |
|
883 |
e->n_machines ++; |
884 |
e->machines = realloc(e->machines, |
885 |
sizeof(struct machine *) * e->n_machines); |
886 |
if (e->machines == NULL) { |
887 |
fprintf(stderr, "emul_add_machine(): out of memory\n"); |
888 |
exit(1); |
889 |
} |
890 |
|
891 |
e->machines[i] = m; |
892 |
|
893 |
snprintf(tmpstr, sizeof(tmpstr), "machine[%i]", i); |
894 |
settings_add(e->settings, tmpstr, 1, SETTINGS_TYPE_SUBSETTINGS, 0, |
895 |
e->machines[i]->settings); |
896 |
|
897 |
return m; |
898 |
} |
899 |
|
900 |
|
901 |
/* |
902 |
* add_arc_components(): |
903 |
* |
904 |
* This function adds ARCBIOS memory descriptors for the loaded program, |
905 |
* and ARCBIOS components for SCSI devices. |
906 |
*/ |
907 |
static void add_arc_components(struct machine *m) |
908 |
{ |
909 |
struct cpu *cpu = m->cpus[m->bootstrap_cpu]; |
910 |
uint64_t start = cpu->pc & 0x1fffffff; |
911 |
uint64_t len = 0xc00000 - start; |
912 |
struct diskimage *d; |
913 |
uint64_t scsicontroller, scsidevice, scsidisk; |
914 |
|
915 |
if ((cpu->pc >> 60) != 0xf) { |
916 |
start = cpu->pc & 0xffffffffffULL; |
917 |
len = 0xc00000 - start; |
918 |
} |
919 |
|
920 |
len += 1048576 * m->memory_offset_in_mb; |
921 |
|
922 |
/* |
923 |
* NOTE/TODO: magic 12MB end of load program area |
924 |
* |
925 |
* Hm. This breaks the old FreeBSD/MIPS snapshots... |
926 |
*/ |
927 |
#if 0 |
928 |
arcbios_add_memory_descriptor(cpu, |
929 |
0x60000 + m->memory_offset_in_mb * 1048576, |
930 |
start-0x60000 - m->memory_offset_in_mb * 1048576, |
931 |
ARCBIOS_MEM_FreeMemory); |
932 |
#endif |
933 |
arcbios_add_memory_descriptor(cpu, |
934 |
start, len, ARCBIOS_MEM_LoadedProgram); |
935 |
|
936 |
scsicontroller = arcbios_get_scsicontroller(m); |
937 |
if (scsicontroller == 0) |
938 |
return; |
939 |
|
940 |
/* TODO: The device 'name' should defined be somewhere else. */ |
941 |
|
942 |
d = m->first_diskimage; |
943 |
while (d != NULL) { |
944 |
if (d->type == DISKIMAGE_SCSI) { |
945 |
int a, b, flags = COMPONENT_FLAG_Input; |
946 |
char component_string[100]; |
947 |
char *name = "DEC RZ58 (C) DEC2000"; |
948 |
|
949 |
/* Read-write, or read-only? */ |
950 |
if (d->writable) |
951 |
flags |= COMPONENT_FLAG_Output; |
952 |
else |
953 |
flags |= COMPONENT_FLAG_ReadOnly; |
954 |
|
955 |
a = COMPONENT_TYPE_DiskController; |
956 |
b = COMPONENT_TYPE_DiskPeripheral; |
957 |
|
958 |
if (d->is_a_cdrom) { |
959 |
flags |= COMPONENT_FLAG_Removable; |
960 |
a = COMPONENT_TYPE_CDROMController; |
961 |
b = COMPONENT_TYPE_FloppyDiskPeripheral; |
962 |
name = "NEC CD-ROM CDR-210P 1.0 "; |
963 |
} |
964 |
|
965 |
scsidevice = arcbios_addchild_manual(cpu, |
966 |
COMPONENT_CLASS_ControllerClass, |
967 |
a, flags, 1, 2, d->id, 0xffffffff, |
968 |
name, scsicontroller, NULL, 0); |
969 |
|
970 |
scsidisk = arcbios_addchild_manual(cpu, |
971 |
COMPONENT_CLASS_PeripheralClass, |
972 |
b, flags, 1, 2, 0, 0xffffffff, NULL, |
973 |
scsidevice, NULL, 0); |
974 |
|
975 |
/* |
976 |
* Add device string to component address mappings: |
977 |
* "scsi(0)disk(0)rdisk(0)partition(0)" |
978 |
*/ |
979 |
|
980 |
if (d->is_a_cdrom) { |
981 |
snprintf(component_string, |
982 |
sizeof(component_string), |
983 |
"scsi(0)cdrom(%i)", d->id); |
984 |
arcbios_add_string_to_component(m, |
985 |
component_string, scsidevice); |
986 |
|
987 |
snprintf(component_string, |
988 |
sizeof(component_string), |
989 |
"scsi(0)cdrom(%i)fdisk(0)", d->id); |
990 |
arcbios_add_string_to_component(m, |
991 |
component_string, scsidisk); |
992 |
} else { |
993 |
snprintf(component_string, |
994 |
sizeof(component_string), |
995 |
"scsi(0)disk(%i)", d->id); |
996 |
arcbios_add_string_to_component(m, |
997 |
component_string, scsidevice); |
998 |
|
999 |
snprintf(component_string, |
1000 |
sizeof(component_string), |
1001 |
"scsi(0)disk(%i)rdisk(0)", d->id); |
1002 |
arcbios_add_string_to_component(m, |
1003 |
component_string, scsidisk); |
1004 |
} |
1005 |
} |
1006 |
|
1007 |
d = d->next; |
1008 |
} |
1009 |
} |
1010 |
|
1011 |
|
1012 |
/* |
1013 |
* emul_machine_setup(): |
1014 |
* |
1015 |
* o) Initialize the hardware (RAM, devices, CPUs, ...) which |
1016 |
* will be emulated in this machine. |
1017 |
* |
1018 |
* o) Load ROM code and/or other programs into emulated memory. |
1019 |
* |
1020 |
* o) Special hacks needed after programs have been loaded. |
1021 |
*/ |
1022 |
void emul_machine_setup(struct machine *m, int n_load, char **load_names, |
1023 |
int n_devices, char **device_names) |
1024 |
{ |
1025 |
struct cpu *cpu; |
1026 |
int i, iadd = DEBUG_INDENTATION; |
1027 |
uint64_t memory_amount, entrypoint = 0, gp = 0, toc = 0; |
1028 |
int byte_order; |
1029 |
|
1030 |
debug("machine \"%s\":\n", m->name); |
1031 |
debug_indentation(iadd); |
1032 |
|
1033 |
/* For userland-only, this decides which ARCH/cpu_name to use: */ |
1034 |
if (m->machine_type == MACHINE_USERLAND && m->userland_emul != NULL) { |
1035 |
useremul_name_to_useremul(NULL, m->userland_emul, |
1036 |
&m->arch, &m->machine_name, &m->cpu_name); |
1037 |
if (m->arch == ARCH_NOARCH) { |
1038 |
printf("Unsupported userland emulation mode.\n"); |
1039 |
exit(1); |
1040 |
} |
1041 |
} |
1042 |
|
1043 |
if (m->machine_type == MACHINE_NONE) { |
1044 |
fatal("No machine type specified?\n"); |
1045 |
exit(1); |
1046 |
} |
1047 |
|
1048 |
m->cpu_family = cpu_family_ptr_by_number(m->arch); |
1049 |
|
1050 |
if (m->arch == ARCH_ALPHA) |
1051 |
m->arch_pagesize = 8192; |
1052 |
|
1053 |
machine_memsize_fix(m); |
1054 |
|
1055 |
/* |
1056 |
* Create the system's memory: |
1057 |
* |
1058 |
* (Don't print the amount for userland-only emulation; the |
1059 |
* size doesn't matter.) |
1060 |
*/ |
1061 |
if (m->machine_type != MACHINE_USERLAND) |
1062 |
debug("memory: %i MB", m->physical_ram_in_mb); |
1063 |
memory_amount = (uint64_t)m->physical_ram_in_mb * 1048576; |
1064 |
if (m->memory_offset_in_mb > 0) { |
1065 |
/* |
1066 |
* A special hack is used for some SGI models, |
1067 |
* where memory is offset by 128MB to leave room for |
1068 |
* EISA space and other things. |
1069 |
*/ |
1070 |
debug(" (offset by %iMB)", m->memory_offset_in_mb); |
1071 |
memory_amount += 1048576 * m->memory_offset_in_mb; |
1072 |
} |
1073 |
m->memory = memory_new(memory_amount, m->arch); |
1074 |
if (m->machine_type != MACHINE_USERLAND) |
1075 |
debug("\n"); |
1076 |
|
1077 |
/* Create CPUs: */ |
1078 |
if (m->cpu_name == NULL) |
1079 |
machine_default_cputype(m); |
1080 |
if (m->ncpus == 0) { |
1081 |
/* TODO: This should be moved elsewhere... */ |
1082 |
if (m->machine_type == MACHINE_BEBOX) |
1083 |
m->ncpus = 2; |
1084 |
else if (m->machine_type == MACHINE_ARC && |
1085 |
m->machine_subtype == MACHINE_ARC_NEC_R96) |
1086 |
m->ncpus = 2; |
1087 |
else if (m->machine_type == MACHINE_ARC && |
1088 |
m->machine_subtype == MACHINE_ARC_NEC_R98) |
1089 |
m->ncpus = 4; |
1090 |
else |
1091 |
m->ncpus = 1; |
1092 |
} |
1093 |
m->cpus = malloc(sizeof(struct cpu *) * m->ncpus); |
1094 |
if (m->cpus == NULL) { |
1095 |
fprintf(stderr, "out of memory\n"); |
1096 |
exit(1); |
1097 |
} |
1098 |
memset(m->cpus, 0, sizeof(struct cpu *) * m->ncpus); |
1099 |
|
1100 |
debug("cpu0"); |
1101 |
if (m->ncpus > 1) |
1102 |
debug(" .. cpu%i", m->ncpus - 1); |
1103 |
debug(": "); |
1104 |
for (i=0; i<m->ncpus; i++) { |
1105 |
m->cpus[i] = cpu_new(m->memory, m, i, m->cpu_name); |
1106 |
if (m->cpus[i] == NULL) { |
1107 |
fprintf(stderr, "Unable to create CPU object. " |
1108 |
"Aborting."); |
1109 |
exit(1); |
1110 |
} |
1111 |
} |
1112 |
debug("\n"); |
1113 |
|
1114 |
#if 0 |
1115 |
/* Special case: The Playstation Portable has an additional CPU: */ |
1116 |
if (m->machine_type == MACHINE_PSP) { |
1117 |
debug("cpu%i: ", m->ncpus); |
1118 |
m->cpus[m->ncpus] = cpu_new(m->memory, m, |
1119 |
0 /* use 0 here to show info with debug() */, |
1120 |
"Allegrex" /* TODO */); |
1121 |
debug("\n"); |
1122 |
m->ncpus ++; |
1123 |
} |
1124 |
#endif |
1125 |
|
1126 |
if (m->use_random_bootstrap_cpu) |
1127 |
m->bootstrap_cpu = random() % m->ncpus; |
1128 |
else |
1129 |
m->bootstrap_cpu = 0; |
1130 |
|
1131 |
cpu = m->cpus[m->bootstrap_cpu]; |
1132 |
|
1133 |
/* Set cpu->useremul_syscall, and use userland_memory_rw: */ |
1134 |
if (m->userland_emul != NULL) { |
1135 |
useremul_name_to_useremul(cpu, |
1136 |
m->userland_emul, NULL, NULL, NULL); |
1137 |
|
1138 |
switch (m->arch) { |
1139 |
#ifdef ENABLE_ALPHA |
1140 |
case ARCH_ALPHA: |
1141 |
cpu->memory_rw = alpha_userland_memory_rw; |
1142 |
break; |
1143 |
#endif |
1144 |
default:cpu->memory_rw = userland_memory_rw; |
1145 |
} |
1146 |
} |
1147 |
|
1148 |
if (m->use_x11) |
1149 |
x11_init(m); |
1150 |
|
1151 |
/* Fill memory with random bytes: */ |
1152 |
if (m->random_mem_contents) { |
1153 |
for (i=0; i<m->physical_ram_in_mb * 1048576; i+=256) { |
1154 |
unsigned char data[256]; |
1155 |
unsigned int j; |
1156 |
for (j=0; j<sizeof(data); j++) |
1157 |
data[j] = random() & 255; |
1158 |
cpu->memory_rw(cpu, m->memory, i, data, sizeof(data), |
1159 |
MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS | PHYSICAL); |
1160 |
} |
1161 |
} |
1162 |
|
1163 |
if (m->userland_emul != NULL) { |
1164 |
/* |
1165 |
* For userland-only emulation, no machine emulation |
1166 |
* is needed. |
1167 |
*/ |
1168 |
} else { |
1169 |
for (i=0; i<n_devices; i++) |
1170 |
device_add(m, device_names[i]); |
1171 |
|
1172 |
machine_setup(m); |
1173 |
} |
1174 |
|
1175 |
diskimage_dump_info(m); |
1176 |
console_debug_dump(m); |
1177 |
|
1178 |
/* Load files (ROM code, boot code, ...) into memory: */ |
1179 |
if (n_load == 0) { |
1180 |
if (m->first_diskimage != NULL) { |
1181 |
if (!load_bootblock(m, cpu, &n_load, &load_names)) { |
1182 |
fprintf(stderr, "\nNo executable files were" |
1183 |
" specified, and booting directly from disk" |
1184 |
" failed.\n"); |
1185 |
exit(1); |
1186 |
} |
1187 |
} else { |
1188 |
fprintf(stderr, "No executable file(s) loaded, and " |
1189 |
"we are not booting directly from a disk image." |
1190 |
"\nAborting.\n"); |
1191 |
exit(1); |
1192 |
} |
1193 |
} |
1194 |
|
1195 |
while (n_load > 0) { |
1196 |
FILE *tmp_f; |
1197 |
char *name_to_load = *load_names; |
1198 |
int remove_after_load = 0; |
1199 |
|
1200 |
/* Special hack for removing temporary files: */ |
1201 |
if (name_to_load[0] == 8) { |
1202 |
name_to_load ++; |
1203 |
remove_after_load = 1; |
1204 |
} |
1205 |
|
1206 |
/* |
1207 |
* gzipped files are automagically gunzipped: |
1208 |
* NOTE/TODO: This isn't secure. system() is used. |
1209 |
*/ |
1210 |
tmp_f = fopen(name_to_load, "r"); |
1211 |
if (tmp_f != NULL) { |
1212 |
unsigned char buf[2]; /* gzip header */ |
1213 |
memset(buf, 0, sizeof(buf)); |
1214 |
fread(buf, 1, sizeof(buf), tmp_f); |
1215 |
if (buf[0]==0x1f && buf[1]==0x8b) { |
1216 |
size_t zzlen = strlen(name_to_load)*2 + 100; |
1217 |
char *zz = malloc(zzlen); |
1218 |
debug("gunziping %s\n", name_to_load); |
1219 |
/* |
1220 |
* gzip header found. If this was a file |
1221 |
* extracted from, say, a CDROM image, then it |
1222 |
* already has a temporary name. Otherwise we |
1223 |
* have to gunzip into a temporary file. |
1224 |
*/ |
1225 |
if (remove_after_load) { |
1226 |
snprintf(zz, zzlen, "mv %s %s.gz", |
1227 |
name_to_load, name_to_load); |
1228 |
system(zz); |
1229 |
snprintf(zz, zzlen, "gunzip %s.gz", |
1230 |
name_to_load); |
1231 |
system(zz); |
1232 |
} else { |
1233 |
/* gunzip into new temp file: */ |
1234 |
int tmpfile_handle; |
1235 |
char *new_temp_name = |
1236 |
strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
1237 |
tmpfile_handle = mkstemp(new_temp_name); |
1238 |
close(tmpfile_handle); |
1239 |
snprintf(zz, zzlen, "gunzip -c '%s' > " |
1240 |
"%s", name_to_load, new_temp_name); |
1241 |
system(zz); |
1242 |
name_to_load = new_temp_name; |
1243 |
remove_after_load = 1; |
1244 |
} |
1245 |
free(zz); |
1246 |
} |
1247 |
fclose(tmp_f); |
1248 |
} |
1249 |
|
1250 |
/* |
1251 |
* Ugly (but usable) hack for Playstation Portable: If the |
1252 |
* filename ends with ".pbp" and the file contains an ELF |
1253 |
* header, then extract the ELF file into a temporary file. |
1254 |
*/ |
1255 |
if (strlen(name_to_load) > 4 && strcasecmp(name_to_load + |
1256 |
strlen(name_to_load) - 4, ".pbp") == 0 && |
1257 |
(tmp_f = fopen(name_to_load, "r")) != NULL) { |
1258 |
off_t filesize, j, found=0; |
1259 |
unsigned char *buf; |
1260 |
fseek(tmp_f, 0, SEEK_END); |
1261 |
filesize = ftello(tmp_f); |
1262 |
fseek(tmp_f, 0, SEEK_SET); |
1263 |
buf = malloc(filesize); |
1264 |
if (buf == NULL) { |
1265 |
fprintf(stderr, "out of memory while trying" |
1266 |
" to read %s\n", name_to_load); |
1267 |
exit(1); |
1268 |
} |
1269 |
fread(buf, 1, filesize, tmp_f); |
1270 |
fclose(tmp_f); |
1271 |
/* Search for the ELF header, from offset 1 (!): */ |
1272 |
for (j=1; j<filesize - 4; j++) |
1273 |
if (memcmp(buf + j, ELFMAG, SELFMAG) == 0) { |
1274 |
found = j; |
1275 |
break; |
1276 |
} |
1277 |
if (found != 0) { |
1278 |
int tmpfile_handle; |
1279 |
char *new_temp_name = |
1280 |
strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
1281 |
debug("extracting ELF from %s (offset 0x%x)\n", |
1282 |
name_to_load, (int)found); |
1283 |
tmpfile_handle = mkstemp(new_temp_name); |
1284 |
write(tmpfile_handle, buf + found, |
1285 |
filesize - found); |
1286 |
close(tmpfile_handle); |
1287 |
name_to_load = new_temp_name; |
1288 |
remove_after_load = 1; |
1289 |
} |
1290 |
} |
1291 |
|
1292 |
byte_order = NO_BYTE_ORDER_OVERRIDE; |
1293 |
|
1294 |
/* |
1295 |
* Load the file: :-) |
1296 |
*/ |
1297 |
file_load(m, m->memory, name_to_load, &entrypoint, |
1298 |
m->arch, &gp, &byte_order, &toc); |
1299 |
|
1300 |
if (remove_after_load) { |
1301 |
debug("removing %s\n", name_to_load); |
1302 |
unlink(name_to_load); |
1303 |
} |
1304 |
|
1305 |
if (byte_order != NO_BYTE_ORDER_OVERRIDE) |
1306 |
cpu->byte_order = byte_order; |
1307 |
|
1308 |
cpu->pc = entrypoint; |
1309 |
|
1310 |
switch (m->arch) { |
1311 |
|
1312 |
case ARCH_ALPHA: |
1313 |
/* For position-independent code: */ |
1314 |
cpu->cd.alpha.r[ALPHA_T12] = cpu->pc; |
1315 |
break; |
1316 |
|
1317 |
case ARCH_ARM: |
1318 |
if (cpu->pc & 3) { |
1319 |
fatal("ARM: lowest bits of pc set: TODO\n"); |
1320 |
exit(1); |
1321 |
} |
1322 |
cpu->pc &= 0xfffffffc; |
1323 |
break; |
1324 |
|
1325 |
case ARCH_AVR: |
1326 |
cpu->pc &= 0xfffff; |
1327 |
if (cpu->pc & 1) { |
1328 |
fatal("AVR: lowest bit of pc set: TODO\n"); |
1329 |
exit(1); |
1330 |
} |
1331 |
break; |
1332 |
|
1333 |
case ARCH_RCA180X: |
1334 |
cpu->pc &= 0xffff; |
1335 |
break; |
1336 |
|
1337 |
case ARCH_M68K: |
1338 |
break; |
1339 |
|
1340 |
case ARCH_MIPS: |
1341 |
if ((cpu->pc >> 32) == 0 && (cpu->pc & 0x80000000ULL)) |
1342 |
cpu->pc |= 0xffffffff00000000ULL; |
1343 |
|
1344 |
cpu->cd.mips.gpr[MIPS_GPR_GP] = gp; |
1345 |
|
1346 |
if ((cpu->cd.mips.gpr[MIPS_GPR_GP] >> 32) == 0 && |
1347 |
(cpu->cd.mips.gpr[MIPS_GPR_GP] & 0x80000000ULL)) |
1348 |
cpu->cd.mips.gpr[MIPS_GPR_GP] |= |
1349 |
0xffffffff00000000ULL; |
1350 |
break; |
1351 |
|
1352 |
case ARCH_PPC: |
1353 |
/* See http://www.linuxbase.org/spec/ELF/ppc64/ |
1354 |
spec/x458.html for more info. */ |
1355 |
cpu->cd.ppc.gpr[2] = toc; |
1356 |
/* TODO */ |
1357 |
if (cpu->cd.ppc.bits == 32) |
1358 |
cpu->pc &= 0xffffffffULL; |
1359 |
break; |
1360 |
|
1361 |
case ARCH_SH: |
1362 |
if (cpu->cd.sh.cpu_type.bits == 32) |
1363 |
cpu->pc &= 0xffffffffULL; |
1364 |
cpu->pc &= ~1; |
1365 |
break; |
1366 |
|
1367 |
case ARCH_SPARC: |
1368 |
break; |
1369 |
|
1370 |
case ARCH_TRANSPUTER: |
1371 |
cpu->pc &= 0xffffffffULL; |
1372 |
break; |
1373 |
|
1374 |
default: |
1375 |
fatal("emul_machine_setup(): Internal error: " |
1376 |
"Unimplemented arch %i\n", m->arch); |
1377 |
exit(1); |
1378 |
} |
1379 |
|
1380 |
/* |
1381 |
* For userland emulation, the remaining items |
1382 |
* on the command line will be passed as parameters |
1383 |
* to the emulated program, and will not be treated |
1384 |
* as filenames to load into the emulator. |
1385 |
* The program's name will be in load_names[0], and the |
1386 |
* rest of the parameters in load_names[1] and up. |
1387 |
*/ |
1388 |
if (m->userland_emul != NULL) |
1389 |
break; |
1390 |
|
1391 |
n_load --; |
1392 |
load_names ++; |
1393 |
} |
1394 |
|
1395 |
if (m->byte_order_override != NO_BYTE_ORDER_OVERRIDE) |
1396 |
cpu->byte_order = m->byte_order_override; |
1397 |
|
1398 |
/* Same byte order and entrypoint for all CPUs: */ |
1399 |
for (i=0; i<m->ncpus; i++) |
1400 |
if (i != m->bootstrap_cpu) { |
1401 |
m->cpus[i]->byte_order = cpu->byte_order; |
1402 |
m->cpus[i]->pc = cpu->pc; |
1403 |
} |
1404 |
|
1405 |
if (m->userland_emul != NULL) |
1406 |
useremul_setup(cpu, n_load, load_names); |
1407 |
|
1408 |
/* Startup the bootstrap CPU: */ |
1409 |
cpu->running = 1; |
1410 |
|
1411 |
/* ... or pause all CPUs, if start_paused is set: */ |
1412 |
if (m->start_paused) { |
1413 |
for (i=0; i<m->ncpus; i++) |
1414 |
m->cpus[i]->running = 0; |
1415 |
} |
1416 |
|
1417 |
/* Add PC dump points: */ |
1418 |
add_dump_points(m); |
1419 |
|
1420 |
/* TODO: This is MIPS-specific! */ |
1421 |
if (m->machine_type == MACHINE_PMAX && |
1422 |
cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
1423 |
add_symbol_name(&m->symbol_context, |
1424 |
0x9fff0000, 0x10000, "r2k3k_cache", 0, 0); |
1425 |
|
1426 |
symbol_recalc_sizes(&m->symbol_context); |
1427 |
|
1428 |
/* Special hack for ARC/SGI emulation: */ |
1429 |
if ((m->machine_type == MACHINE_ARC || |
1430 |
m->machine_type == MACHINE_SGI) && m->prom_emulation) |
1431 |
add_arc_components(m); |
1432 |
|
1433 |
debug("starting cpu%i at ", m->bootstrap_cpu); |
1434 |
switch (m->arch) { |
1435 |
|
1436 |
case ARCH_ARM: |
1437 |
/* ARM cpus aren't 64-bit: */ |
1438 |
debug("0x%08x", (int)entrypoint); |
1439 |
break; |
1440 |
|
1441 |
case ARCH_AVR: |
1442 |
/* Atmel AVR uses a 16-bit or 22-bit program counter: */ |
1443 |
debug("0x%04x", (int)entrypoint); |
1444 |
break; |
1445 |
|
1446 |
case ARCH_MIPS: |
1447 |
if (cpu->is_32bit) { |
1448 |
debug("0x%08x", (int)m->cpus[ |
1449 |
m->bootstrap_cpu]->pc); |
1450 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
1451 |
debug(" (gp=0x%08x)", (int)m->cpus[ |
1452 |
m->bootstrap_cpu]->cd.mips.gpr[ |
1453 |
MIPS_GPR_GP]); |
1454 |
} else { |
1455 |
debug("0x%016llx", (long long)m->cpus[ |
1456 |
m->bootstrap_cpu]->pc); |
1457 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
1458 |
debug(" (gp=0x%016llx)", (long long) |
1459 |
cpu->cd.mips.gpr[MIPS_GPR_GP]); |
1460 |
} |
1461 |
break; |
1462 |
|
1463 |
case ARCH_PPC: |
1464 |
if (cpu->cd.ppc.bits == 32) |
1465 |
debug("0x%08x", (int)entrypoint); |
1466 |
else |
1467 |
debug("0x%016llx", (long long)entrypoint); |
1468 |
break; |
1469 |
|
1470 |
default: |
1471 |
if (cpu->is_32bit) |
1472 |
debug("0x%08x", (int)cpu->pc); |
1473 |
else |
1474 |
debug("0x%016llx", (long long)cpu->pc); |
1475 |
} |
1476 |
debug("\n"); |
1477 |
|
1478 |
debug_indentation(-iadd); |
1479 |
} |
1480 |
|
1481 |
|
1482 |
/* |
1483 |
* emul_dumpinfo(): |
1484 |
* |
1485 |
* Dump info about all machines in an emul. |
1486 |
*/ |
1487 |
void emul_dumpinfo(struct emul *e) |
1488 |
{ |
1489 |
int j, nm, iadd = DEBUG_INDENTATION; |
1490 |
|
1491 |
if (e->net != NULL) |
1492 |
net_dumpinfo(e->net); |
1493 |
|
1494 |
nm = e->n_machines; |
1495 |
for (j=0; j<nm; j++) { |
1496 |
debug("machine %i: \"%s\"\n", j, e->machines[j]->name); |
1497 |
debug_indentation(iadd); |
1498 |
machine_dumpinfo(e->machines[j]); |
1499 |
debug_indentation(-iadd); |
1500 |
} |
1501 |
} |
1502 |
|
1503 |
|
1504 |
/* |
1505 |
* emul_simple_init(): |
1506 |
* |
1507 |
* For a normal setup: |
1508 |
* |
1509 |
* o) Initialize a network. |
1510 |
* o) Initialize one machine. |
1511 |
* |
1512 |
* For a userland-only setup: |
1513 |
* |
1514 |
* o) Initialize a "pseudo"-machine. |
1515 |
*/ |
1516 |
void emul_simple_init(struct emul *emul) |
1517 |
{ |
1518 |
int iadd = DEBUG_INDENTATION; |
1519 |
struct machine *m; |
1520 |
|
1521 |
if (emul->n_machines != 1) { |
1522 |
fprintf(stderr, "emul_simple_init(): n_machines != 1\n"); |
1523 |
exit(1); |
1524 |
} |
1525 |
|
1526 |
m = emul->machines[0]; |
1527 |
|
1528 |
if (m->userland_emul == NULL) { |
1529 |
debug("Simple setup...\n"); |
1530 |
debug_indentation(iadd); |
1531 |
|
1532 |
/* Create a simple network: */ |
1533 |
emul->net = net_init(emul, NET_INIT_FLAG_GATEWAY, |
1534 |
NET_DEFAULT_IPV4_MASK, |
1535 |
NET_DEFAULT_IPV4_LEN, |
1536 |
NULL, 0, 0, NULL); |
1537 |
} else { |
1538 |
/* Userland pseudo-machine: */ |
1539 |
debug("Syscall emulation (userland-only) setup...\n"); |
1540 |
debug_indentation(iadd); |
1541 |
} |
1542 |
|
1543 |
/* Create the machine: */ |
1544 |
emul_machine_setup(m, extra_argc, extra_argv, 0, NULL); |
1545 |
|
1546 |
debug_indentation(-iadd); |
1547 |
} |
1548 |
|
1549 |
|
1550 |
/* |
1551 |
* emul_create_from_configfile(): |
1552 |
* |
1553 |
* Create an emul struct by reading settings from a configuration file. |
1554 |
*/ |
1555 |
struct emul *emul_create_from_configfile(char *fname, int id) |
1556 |
{ |
1557 |
int iadd = DEBUG_INDENTATION; |
1558 |
struct emul *e = emul_new(fname, id); |
1559 |
|
1560 |
debug("Creating emulation from configfile \"%s\":\n", fname); |
1561 |
debug_indentation(iadd); |
1562 |
|
1563 |
emul_parse_config(e, fname); |
1564 |
|
1565 |
debug_indentation(-iadd); |
1566 |
return e; |
1567 |
} |
1568 |
|
1569 |
|
1570 |
/* |
1571 |
* emul_run(): |
1572 |
* |
1573 |
* o) Set up things needed before running emulations. |
1574 |
* |
1575 |
* o) Run emulations (one or more, in parallel). |
1576 |
* |
1577 |
* o) De-initialize things. |
1578 |
*/ |
1579 |
void emul_run(struct emul **emuls, int n_emuls) |
1580 |
{ |
1581 |
struct emul *e; |
1582 |
int i = 0, j, go = 1, n, anything; |
1583 |
|
1584 |
if (n_emuls < 1) { |
1585 |
fprintf(stderr, "emul_run(): no thing to do\n"); |
1586 |
return; |
1587 |
} |
1588 |
|
1589 |
atexit(fix_console); |
1590 |
|
1591 |
/* Initialize the interactive debugger: */ |
1592 |
debugger_init(emuls, n_emuls); |
1593 |
|
1594 |
/* Run any additional debugger commands before starting: */ |
1595 |
for (i=0; i<n_emuls; i++) { |
1596 |
struct emul *emul = emuls[i]; |
1597 |
if (emul->n_debugger_cmds > 0) { |
1598 |
int j; |
1599 |
if (i == 0) |
1600 |
print_separator(); |
1601 |
for (j = 0; j < emul->n_debugger_cmds; j ++) { |
1602 |
debug("> %s\n", emul->debugger_cmds[j]); |
1603 |
debugger_execute_cmd(emul->debugger_cmds[j], |
1604 |
strlen(emul->debugger_cmds[j])); |
1605 |
} |
1606 |
} |
1607 |
} |
1608 |
|
1609 |
print_separator(); |
1610 |
debug("\n"); |
1611 |
|
1612 |
|
1613 |
/* |
1614 |
* console_init_main() makes sure that the terminal is in a |
1615 |
* reasonable state. |
1616 |
* |
1617 |
* The SIGINT handler is for CTRL-C (enter the interactive debugger). |
1618 |
* |
1619 |
* The SIGCONT handler is invoked whenever the user presses CTRL-Z |
1620 |
* (or sends SIGSTOP) and then continues. It makes sure that the |
1621 |
* terminal is in an expected state. |
1622 |
*/ |
1623 |
console_init_main(emuls[0]); /* TODO: what is a good argument? */ |
1624 |
signal(SIGINT, debugger_activate); |
1625 |
signal(SIGCONT, console_sigcont); |
1626 |
|
1627 |
/* Not in verbose mode? Then set quiet_mode. */ |
1628 |
if (!verbose) |
1629 |
quiet_mode = 1; |
1630 |
|
1631 |
/* Initialize all CPUs in all machines in all emulations: */ |
1632 |
for (i=0; i<n_emuls; i++) { |
1633 |
e = emuls[i]; |
1634 |
if (e == NULL) |
1635 |
continue; |
1636 |
for (j=0; j<e->n_machines; j++) |
1637 |
cpu_run_init(e->machines[j]); |
1638 |
} |
1639 |
|
1640 |
/* TODO: Generalize: */ |
1641 |
if (emuls[0]->machines[0]->show_trace_tree) |
1642 |
cpu_functioncall_trace(emuls[0]->machines[0]->cpus[0], |
1643 |
emuls[0]->machines[0]->cpus[0]->pc); |
1644 |
|
1645 |
/* Start emulated clocks: */ |
1646 |
timer_start(); |
1647 |
|
1648 |
/* |
1649 |
* MAIN LOOP: |
1650 |
* |
1651 |
* Run all emulations in parallel, running each machine in |
1652 |
* each emulation. |
1653 |
*/ |
1654 |
while (go) { |
1655 |
go = 0; |
1656 |
|
1657 |
/* Flush X11 and serial console output every now and then: */ |
1658 |
if (emuls[0]->machines[0]->ninstrs > |
1659 |
emuls[0]->machines[0]->ninstrs_flush + (1<<19)) { |
1660 |
x11_check_event(emuls, n_emuls); |
1661 |
console_flush(); |
1662 |
emuls[0]->machines[0]->ninstrs_flush = |
1663 |
emuls[0]->machines[0]->ninstrs; |
1664 |
} |
1665 |
|
1666 |
if (emuls[0]->machines[0]->ninstrs > |
1667 |
emuls[0]->machines[0]->ninstrs_show + (1<<25)) { |
1668 |
emuls[0]->machines[0]->ninstrs_since_gettimeofday += |
1669 |
(emuls[0]->machines[0]->ninstrs - |
1670 |
emuls[0]->machines[0]->ninstrs_show); |
1671 |
cpu_show_cycles(emuls[0]->machines[0], 0); |
1672 |
emuls[0]->machines[0]->ninstrs_show = |
1673 |
emuls[0]->machines[0]->ninstrs; |
1674 |
} |
1675 |
|
1676 |
if (single_step == ENTER_SINGLE_STEPPING) { |
1677 |
/* TODO: Cleanup! */ |
1678 |
old_instruction_trace = |
1679 |
emuls[0]->machines[0]->instruction_trace; |
1680 |
old_quiet_mode = quiet_mode; |
1681 |
old_show_trace_tree = |
1682 |
emuls[0]->machines[0]->show_trace_tree; |
1683 |
emuls[0]->machines[0]->instruction_trace = 1; |
1684 |
emuls[0]->machines[0]->show_trace_tree = 1; |
1685 |
quiet_mode = 0; |
1686 |
single_step = SINGLE_STEPPING; |
1687 |
} |
1688 |
|
1689 |
if (single_step == SINGLE_STEPPING) |
1690 |
debugger(); |
1691 |
|
1692 |
for (i=0; i<n_emuls; i++) { |
1693 |
e = emuls[i]; |
1694 |
|
1695 |
for (j=0; j<e->n_machines; j++) { |
1696 |
if (e->machines[j]->gdb.port > 0) |
1697 |
debugger_gdb_check_incoming( |
1698 |
e->machines[j]); |
1699 |
|
1700 |
anything = machine_run(e->machines[j]); |
1701 |
if (anything) |
1702 |
go = 1; |
1703 |
} |
1704 |
} |
1705 |
} |
1706 |
|
1707 |
/* Stop any running timers: */ |
1708 |
timer_stop(); |
1709 |
|
1710 |
/* Deinitialize all CPUs in all machines in all emulations: */ |
1711 |
for (i=0; i<n_emuls; i++) { |
1712 |
e = emuls[i]; |
1713 |
if (e == NULL) |
1714 |
continue; |
1715 |
for (j=0; j<e->n_machines; j++) |
1716 |
cpu_run_deinit(e->machines[j]); |
1717 |
} |
1718 |
|
1719 |
/* force_debugger_at_exit flag set? Then enter the debugger: */ |
1720 |
if (force_debugger_at_exit) { |
1721 |
quiet_mode = 0; |
1722 |
debugger_reset(); |
1723 |
debugger(); |
1724 |
} |
1725 |
|
1726 |
/* Any machine using X11? Then wait before exiting: */ |
1727 |
n = 0; |
1728 |
for (i=0; i<n_emuls; i++) |
1729 |
for (j=0; j<emuls[i]->n_machines; j++) |
1730 |
if (emuls[i]->machines[j]->use_x11) |
1731 |
n++; |
1732 |
if (n > 0) { |
1733 |
printf("Press enter to quit.\n"); |
1734 |
while (!console_charavail(MAIN_CONSOLE)) { |
1735 |
x11_check_event(emuls, n_emuls); |
1736 |
usleep(10000); |
1737 |
} |
1738 |
console_readchar(MAIN_CONSOLE); |
1739 |
} |
1740 |
|
1741 |
console_deinit_main(); |
1742 |
} |
1743 |
|