1 |
/* |
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* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
5 |
* 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 1.225 2005/08/14 19:35:54 debug Exp $ |
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* |
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* Emulation startup and misc. routines. |
31 |
*/ |
32 |
|
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#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 "bintrans.h" |
43 |
#include "cpu.h" |
44 |
#include "emul.h" |
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#include "console.h" |
46 |
#include "debugger.h" |
47 |
#include "device.h" |
48 |
#include "diskimage.h" |
49 |
#include "exec_elf.h" |
50 |
#include "machine.h" |
51 |
#include "memory.h" |
52 |
#include "mips_cpu_types.h" |
53 |
#include "misc.h" |
54 |
#include "net.h" |
55 |
#include "sgi_arcbios.h" |
56 |
#include "x11.h" |
57 |
|
58 |
|
59 |
extern int force_debugger_at_exit; |
60 |
|
61 |
extern int extra_argc; |
62 |
extern char **extra_argv; |
63 |
|
64 |
extern int verbose; |
65 |
extern int quiet_mode; |
66 |
|
67 |
extern struct emul *debugger_emul; |
68 |
extern struct diskimage *diskimages[]; |
69 |
|
70 |
static char *diskimage_types[] = DISKIMAGE_TYPES; |
71 |
|
72 |
|
73 |
/* |
74 |
* add_dump_points(): |
75 |
* |
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* Take the strings breakpoint_string[] and convert to addresses |
77 |
* (and store them in breakpoint_addr[]). |
78 |
* |
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* TODO: This function should be moved elsewhere. |
80 |
*/ |
81 |
static void add_dump_points(struct machine *m) |
82 |
{ |
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int i; |
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int string_flag; |
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uint64_t dp; |
86 |
|
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for (i=0; i<m->n_breakpoints; i++) { |
88 |
string_flag = 0; |
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dp = strtoull(m->breakpoint_string[i], NULL, 0); |
90 |
|
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/* |
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* If conversion resulted in 0, then perhaps it is a |
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* symbol: |
94 |
*/ |
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if (dp == 0) { |
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uint64_t addr; |
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int res = get_symbol_addr(&m->symbol_context, |
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m->breakpoint_string[i], &addr); |
99 |
if (!res) |
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fprintf(stderr, |
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"WARNING! Breakpoint '%s' could not be" |
102 |
" parsed\n", |
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m->breakpoint_string[i]); |
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else { |
105 |
dp = addr; |
106 |
string_flag = 1; |
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} |
108 |
} |
109 |
|
110 |
/* |
111 |
* TODO: It would be nice if things like symbolname+0x1234 |
112 |
* were automatically converted into the correct address. |
113 |
*/ |
114 |
|
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if ((dp >> 32) == 0 && ((dp >> 31) & 1)) |
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dp |= 0xffffffff00000000ULL; |
117 |
m->breakpoint_addr[i] = dp; |
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|
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debug("breakpoint %i: 0x%016llx", i, (long long)dp); |
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if (string_flag) |
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debug(" (%s)", m->breakpoint_string[i]); |
122 |
debug("\n"); |
123 |
} |
124 |
} |
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|
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|
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/* |
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* fix_console(): |
129 |
*/ |
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static void fix_console(void) |
131 |
{ |
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console_deinit(); |
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} |
134 |
|
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|
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/* |
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* iso_load_bootblock(): |
138 |
* |
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* Try to load a kernel from an ISO 9660 disk image. iso_type is 1 for |
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* "CD001" (standard), 2 for "CDW01" (ECMA), and 3 for "CDROM" (Sierra). |
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* |
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* TODO: This function uses too many magic offsets and so on; it should be |
143 |
* cleaned up some day. |
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* |
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* Returns 1 on success, 0 on failure. |
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*/ |
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static int iso_load_bootblock(struct machine *m, struct cpu *cpu, |
148 |
int disk_id, int disk_type, int iso_type, unsigned char *buf, |
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int *n_loadp, char ***load_namesp) |
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{ |
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char str[35]; |
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int filenr, i, ofs, dirlen, res = 0, res2, iadd = 4; |
153 |
int found_dir; |
154 |
uint64_t dirofs; |
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uint64_t fileofs, filelen; |
156 |
unsigned char *dirbuf = NULL, *dp; |
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unsigned char *match_entry = NULL; |
158 |
char *p, *filename_orig; |
159 |
char *filename = strdup(cpu->machine->boot_kernel_filename); |
160 |
unsigned char *filebuf = NULL; |
161 |
char *tmpfilename = NULL; |
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char **new_array; |
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int tmpfile_handle; |
164 |
|
165 |
if (filename == NULL) { |
166 |
fatal("out of memory\n"); |
167 |
exit(1); |
168 |
} |
169 |
filename_orig = filename; |
170 |
|
171 |
debug("ISO9660 boot:\n"); |
172 |
debug_indentation(iadd); |
173 |
|
174 |
/* Volume ID: */ |
175 |
ofs = iso_type == 3? 48 : 40; |
176 |
memcpy(str, buf + ofs, sizeof(str)); |
177 |
str[32] = '\0'; i = 31; |
178 |
while (i >= 0 && str[i]==' ') |
179 |
str[i--] = '\0'; |
180 |
if (str[0]) |
181 |
debug("\"%s\"", str); |
182 |
else { |
183 |
/* System ID: */ |
184 |
ofs = iso_type == 3? 16 : 8; |
185 |
memcpy(str, buf + ofs, sizeof(str)); |
186 |
str[32] = '\0'; i = 31; |
187 |
while (i >= 0 && str[i]==' ') |
188 |
str[i--] = '\0'; |
189 |
if (str[0]) |
190 |
debug("\"%s\"", str); |
191 |
else |
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debug("(no ID)"); |
193 |
} |
194 |
|
195 |
debug(":%s\n", filename); |
196 |
|
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|
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/* |
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* Traverse the directory structure to find the kernel. |
200 |
*/ |
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|
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dirlen = buf[0x84] + 256*buf[0x85] + 65536*buf[0x86]; |
203 |
if (dirlen != buf[0x8b] + 256*buf[0x8a] + 65536*buf[0x89]) |
204 |
fatal("WARNING: Root directory length mismatch?\n"); |
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|
206 |
dirofs = (int64_t)(buf[0x8c] + (buf[0x8d] << 8) + (buf[0x8e] << 16) + |
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(buf[0x8f] << 24)) * 2048; |
208 |
|
209 |
/* debug("root = %i bytes at 0x%llx\n", dirlen, (long long)dirofs); */ |
210 |
|
211 |
dirbuf = malloc(dirlen); |
212 |
if (dirbuf == NULL) { |
213 |
fatal("out of memory in iso_load_bootblock()\n"); |
214 |
exit(1); |
215 |
} |
216 |
|
217 |
res2 = diskimage_access(m, disk_id, disk_type, 0, dirofs, dirbuf, |
218 |
dirlen); |
219 |
if (!res2) { |
220 |
fatal("Couldn't read the disk image. Aborting.\n"); |
221 |
goto ret; |
222 |
} |
223 |
|
224 |
found_dir = 1; /* Assume root dir */ |
225 |
dp = dirbuf; filenr = 1; |
226 |
p = NULL; |
227 |
while (dp < dirbuf + dirlen) { |
228 |
int i, nlen = dp[0]; |
229 |
int x = dp[2] + (dp[3] << 8) + (dp[4] << 16) + (dp[5] << 24); |
230 |
int y = dp[6] + (dp[7] << 8); |
231 |
char direntry[65]; |
232 |
|
233 |
dp += 8; |
234 |
|
235 |
/* |
236 |
* As long as there is an \ or / in the filename, then we |
237 |
* have not yet found the directory. |
238 |
*/ |
239 |
p = strchr(filename, '/'); |
240 |
if (p == NULL) |
241 |
p = strchr(filename, '\\'); |
242 |
|
243 |
/* debug("%i%s: %i, %i, \"", filenr, filenr == found_dir? |
244 |
" [CURRENT]" : "", x, y); */ |
245 |
for (i=0; i<nlen && i<sizeof(direntry)-1; i++) |
246 |
if (dp[i]) { |
247 |
direntry[i] = dp[i]; |
248 |
/* debug("%c", dp[i]); */ |
249 |
} else |
250 |
break; |
251 |
/* debug("\"\n"); */ |
252 |
direntry[i] = '\0'; |
253 |
|
254 |
/* A directory name match? */ |
255 |
if (p != NULL && strncasecmp(filename, direntry, nlen) == 0 |
256 |
&& nlen == (size_t)p - (size_t)filename && found_dir == y) { |
257 |
found_dir = filenr; |
258 |
filename = p+1; |
259 |
dirofs = 2048 * (int64_t)x; |
260 |
} |
261 |
|
262 |
dp += nlen; |
263 |
|
264 |
/* 16-bit aligned lenght: */ |
265 |
if (nlen & 1) |
266 |
dp ++; |
267 |
|
268 |
filenr ++; |
269 |
} |
270 |
|
271 |
p = strchr(filename, '/'); |
272 |
if (p == NULL) |
273 |
p = strchr(filename, '\\'); |
274 |
|
275 |
if (p != NULL) { |
276 |
char *blah = filename_orig; |
277 |
|
278 |
fatal("could not find '%s' in /", filename); |
279 |
|
280 |
/* Print the first part of the filename: */ |
281 |
while (blah != filename) |
282 |
fatal("%c", *blah++); |
283 |
|
284 |
fatal("\n"); |
285 |
goto ret; |
286 |
} |
287 |
|
288 |
/* debug("dirofs = 0x%llx\n", (long long)dirofs); */ |
289 |
|
290 |
/* Free the old dirbuf, and allocate a new one: */ |
291 |
free(dirbuf); |
292 |
dirbuf = malloc(512); |
293 |
if (dirbuf == NULL) { |
294 |
fatal("out of memory in iso_load_bootblock()\n"); |
295 |
exit(1); |
296 |
} |
297 |
|
298 |
for (;;) { |
299 |
int len, i; |
300 |
|
301 |
/* Too close to another sector? Then realign. */ |
302 |
if ((dirofs & 2047) + 70 > 2047) { |
303 |
dirofs = (dirofs | 2047) + 1; |
304 |
/* debug("realign dirofs = 0x%llx\n", dirofs); */ |
305 |
} |
306 |
|
307 |
res2 = diskimage_access(m, disk_id, disk_type, 0, dirofs, |
308 |
dirbuf, 256); |
309 |
if (!res2) { |
310 |
fatal("Couldn't read the disk image. Aborting.\n"); |
311 |
goto ret; |
312 |
} |
313 |
|
314 |
dp = dirbuf; |
315 |
len = dp[0]; |
316 |
if (len < 2) |
317 |
break; |
318 |
|
319 |
/* |
320 |
* TODO: Actually parse the directory entry! |
321 |
* |
322 |
* Haha, this must be rewritten. |
323 |
*/ |
324 |
for (i=32; i<len; i++) { |
325 |
if (i < len - strlen(filename)) |
326 |
if (strncasecmp(filename, (char *)dp + i, |
327 |
strlen(filename)) == 0) { |
328 |
/* The filename was found somewhere |
329 |
in the directory entry. */ |
330 |
if (match_entry != NULL) { |
331 |
fatal("TODO: I'm too lazy to" |
332 |
" implement a correct " |
333 |
"directory parser right " |
334 |
"now... (BUG)\n"); |
335 |
exit(1); |
336 |
} |
337 |
match_entry = malloc(512); |
338 |
if (match_entry == NULL) { |
339 |
fatal("out of memory\n"); |
340 |
exit(1); |
341 |
} |
342 |
memcpy(match_entry, dp, 512); |
343 |
break; |
344 |
} |
345 |
} |
346 |
|
347 |
dirofs += len; |
348 |
} |
349 |
|
350 |
if (match_entry == NULL) { |
351 |
char *blah = filename_orig; |
352 |
|
353 |
fatal("could not find '%s' in /", filename); |
354 |
|
355 |
/* Print the first part of the filename: */ |
356 |
while (blah != filename) |
357 |
fatal("%c", *blah++); |
358 |
|
359 |
fatal("\n"); |
360 |
goto ret; |
361 |
} |
362 |
|
363 |
fileofs = match_entry[2] + (match_entry[3] << 8) + |
364 |
(match_entry[4] << 16) + (match_entry[5] << 24); |
365 |
filelen = match_entry[10] + (match_entry[11] << 8) + |
366 |
(match_entry[12] << 16) + (match_entry[13] << 24); |
367 |
fileofs *= 2048; |
368 |
|
369 |
/* debug("filelen=%llx fileofs=%llx\n", (long long)filelen, |
370 |
(long long)fileofs); */ |
371 |
|
372 |
filebuf = malloc(filelen); |
373 |
if (filebuf == NULL) { |
374 |
fatal("could not allocate %lli bytes to read the file" |
375 |
" from the disk image!\n", (long long)filelen); |
376 |
goto ret; |
377 |
} |
378 |
|
379 |
tmpfilename = strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
380 |
|
381 |
debug("extracting %lli bytes into %s\n", |
382 |
(long long)filelen, tmpfilename); |
383 |
|
384 |
res2 = diskimage_access(m, disk_id, disk_type, 0, fileofs, filebuf, |
385 |
filelen); |
386 |
if (!res2) { |
387 |
fatal("could not read the file from the disk image!\n"); |
388 |
goto ret; |
389 |
} |
390 |
|
391 |
tmpfile_handle = mkstemp(tmpfilename); |
392 |
if (tmpfile_handle < 0) { |
393 |
fatal("could not create %s\n", tmpfilename); |
394 |
exit(1); |
395 |
} |
396 |
write(tmpfile_handle, filebuf, filelen); |
397 |
close(tmpfile_handle); |
398 |
|
399 |
/* Add the temporary filename to the load_namesp array: */ |
400 |
(*n_loadp)++; |
401 |
new_array = malloc(sizeof(char *) * (*n_loadp)); |
402 |
if (new_array == NULL) { |
403 |
fatal("out of memory\n"); |
404 |
exit(1); |
405 |
} |
406 |
memcpy(new_array, *load_namesp, sizeof(char *) * (*n_loadp)); |
407 |
*load_namesp = new_array; |
408 |
|
409 |
/* This adds a Backspace char in front of the filename; this |
410 |
is a special hack which causes the file to be removed once |
411 |
it has been loaded. */ |
412 |
tmpfilename = realloc(tmpfilename, strlen(tmpfilename) + 2); |
413 |
memmove(tmpfilename + 1, tmpfilename, strlen(tmpfilename) + 1); |
414 |
tmpfilename[0] = 8; |
415 |
|
416 |
(*load_namesp)[*n_loadp - 1] = tmpfilename; |
417 |
|
418 |
res = 1; |
419 |
|
420 |
ret: |
421 |
if (dirbuf != NULL) |
422 |
free(dirbuf); |
423 |
|
424 |
if (filebuf != NULL) |
425 |
free(filebuf); |
426 |
|
427 |
if (match_entry != NULL) |
428 |
free(match_entry); |
429 |
|
430 |
free(filename_orig); |
431 |
|
432 |
debug_indentation(-iadd); |
433 |
return res; |
434 |
} |
435 |
|
436 |
|
437 |
/* |
438 |
* load_bootblock(): |
439 |
* |
440 |
* For some emulation modes, it is possible to boot from a harddisk image by |
441 |
* loading a bootblock from a specific disk offset into memory, and executing |
442 |
* that, instead of requiring a separate kernel file. It is then up to the |
443 |
* bootblock to load a kernel. |
444 |
* |
445 |
* Returns 1 on success, 0 on failure. |
446 |
*/ |
447 |
static int load_bootblock(struct machine *m, struct cpu *cpu, |
448 |
int *n_loadp, char ***load_namesp) |
449 |
{ |
450 |
int boot_disk_id, boot_disk_type = 0, n_blocks, res, readofs, |
451 |
iso_type, retval = 0; |
452 |
unsigned char minibuf[0x20]; |
453 |
unsigned char *bootblock_buf; |
454 |
uint64_t bootblock_offset; |
455 |
uint64_t bootblock_loadaddr, bootblock_pc; |
456 |
|
457 |
boot_disk_id = diskimage_bootdev(m, &boot_disk_type); |
458 |
if (boot_disk_id < 0) |
459 |
return 0; |
460 |
|
461 |
switch (m->machine_type) { |
462 |
case MACHINE_DEC: |
463 |
/* |
464 |
* The first few bytes of a disk contains information about |
465 |
* where the bootblock(s) are located. (These are all 32-bit |
466 |
* little-endian words.) |
467 |
* |
468 |
* Offset 0x10 = load address |
469 |
* 0x14 = initial PC value |
470 |
* 0x18 = nr of 512-byte blocks to read |
471 |
* 0x1c = offset on disk to where the bootblocks |
472 |
* are (in 512-byte units) |
473 |
* 0x20 = nr of blocks to read... |
474 |
* 0x24 = offset... |
475 |
* |
476 |
* nr of blocks to read and offset are repeated until nr of |
477 |
* blocks to read is zero. |
478 |
*/ |
479 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, 0, 0, |
480 |
minibuf, sizeof(minibuf)); |
481 |
|
482 |
bootblock_loadaddr = minibuf[0x10] + (minibuf[0x11] << 8) |
483 |
+ (minibuf[0x12] << 16) + (minibuf[0x13] << 24); |
484 |
|
485 |
/* Convert loadaddr to uncached: */ |
486 |
if ((bootblock_loadaddr & 0xf0000000ULL) != 0x80000000 && |
487 |
(bootblock_loadaddr & 0xf0000000ULL) != 0xa0000000) |
488 |
fatal("\nWARNING! Weird load address 0x%08x.\n\n", |
489 |
(int)bootblock_loadaddr); |
490 |
bootblock_loadaddr &= 0x0fffffffULL; |
491 |
bootblock_loadaddr |= 0xffffffffa0000000ULL; |
492 |
|
493 |
bootblock_pc = minibuf[0x14] + (minibuf[0x15] << 8) |
494 |
+ (minibuf[0x16] << 16) + (minibuf[0x17] << 24); |
495 |
|
496 |
bootblock_pc &= 0x0fffffffULL; |
497 |
bootblock_pc |= 0xffffffffa0000000ULL; |
498 |
cpu->pc = bootblock_pc; |
499 |
|
500 |
debug("DEC boot: loadaddr=0x%08x, pc=0x%08x", |
501 |
(int)bootblock_loadaddr, (int)bootblock_pc); |
502 |
|
503 |
readofs = 0x18; |
504 |
|
505 |
for (;;) { |
506 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
507 |
0, readofs, minibuf, sizeof(minibuf)); |
508 |
if (!res) { |
509 |
fatal("Couldn't read the disk image. " |
510 |
"Aborting.\n"); |
511 |
return 0; |
512 |
} |
513 |
|
514 |
n_blocks = minibuf[0] + (minibuf[1] << 8) |
515 |
+ (minibuf[2] << 16) + (minibuf[3] << 24); |
516 |
|
517 |
bootblock_offset = (minibuf[4] + (minibuf[5] << 8) |
518 |
+ (minibuf[6] << 16) + (minibuf[7] << 24)) * 512; |
519 |
|
520 |
if (n_blocks < 1) |
521 |
break; |
522 |
|
523 |
debug(readofs == 0x18? ": %i" : " + %i", n_blocks); |
524 |
|
525 |
if (n_blocks * 512 > 65536) |
526 |
fatal("\nWARNING! Unusually large bootblock " |
527 |
"(%i bytes)\n\n", n_blocks * 512); |
528 |
|
529 |
bootblock_buf = malloc(n_blocks * 512); |
530 |
if (bootblock_buf == NULL) { |
531 |
fprintf(stderr, "out of memory in " |
532 |
"load_bootblock()\n"); |
533 |
exit(1); |
534 |
} |
535 |
|
536 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
537 |
0, bootblock_offset, bootblock_buf, n_blocks * 512); |
538 |
if (!res) { |
539 |
fatal("WARNING: could not load bootblocks from" |
540 |
" disk offset 0x%llx\n", |
541 |
(long long)bootblock_offset); |
542 |
} |
543 |
|
544 |
store_buf(cpu, bootblock_loadaddr, |
545 |
(char *)bootblock_buf, n_blocks * 512); |
546 |
|
547 |
bootblock_loadaddr += 512*n_blocks; |
548 |
free(bootblock_buf); |
549 |
readofs += 8; |
550 |
} |
551 |
|
552 |
debug(readofs == 0x18? ": no blocks?\n" : " blocks\n"); |
553 |
return 1; |
554 |
|
555 |
case MACHINE_X86: |
556 |
/* TODO: "El Torito" etc? */ |
557 |
if (diskimage_is_a_cdrom(cpu->machine, boot_disk_id, |
558 |
boot_disk_type)) |
559 |
break; |
560 |
|
561 |
bootblock_buf = malloc(512); |
562 |
if (bootblock_buf == NULL) { |
563 |
fprintf(stderr, "Out of memory.\n"); |
564 |
exit(1); |
565 |
} |
566 |
|
567 |
debug("loading PC bootsector from %s id %i\n", |
568 |
diskimage_types[boot_disk_type], boot_disk_id); |
569 |
|
570 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, 0, 0, |
571 |
bootblock_buf, 512); |
572 |
if (!res) { |
573 |
fatal("Couldn't read the disk image. Aborting.\n"); |
574 |
return 0; |
575 |
} |
576 |
|
577 |
if (bootblock_buf[510] != 0x55 || bootblock_buf[511] != 0xaa) |
578 |
debug("WARNING! The 0x55,0xAA marker is missing! " |
579 |
"Booting anyway.\n"); |
580 |
store_buf(cpu, 0x7c00, (char *)bootblock_buf, 512); |
581 |
free(bootblock_buf); |
582 |
|
583 |
return 1; |
584 |
} |
585 |
|
586 |
|
587 |
/* |
588 |
* Try reading a kernel manually from the disk. The code here |
589 |
* does not rely on machine-dependant boot blocks etc. |
590 |
*/ |
591 |
/* ISO9660: (0x800 bytes at 0x8000) */ |
592 |
bootblock_buf = malloc(0x800); |
593 |
if (bootblock_buf == NULL) { |
594 |
fprintf(stderr, "Out of memory.\n"); |
595 |
exit(1); |
596 |
} |
597 |
|
598 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
599 |
0, 0x8000, bootblock_buf, 0x800); |
600 |
if (!res) { |
601 |
fatal("Couldn't read the disk image. Aborting.\n"); |
602 |
return 0; |
603 |
} |
604 |
|
605 |
iso_type = 0; |
606 |
if (strncmp((char *)bootblock_buf+1, "CD001", 5) == 0) |
607 |
iso_type = 1; |
608 |
if (strncmp((char *)bootblock_buf+1, "CDW01", 5) == 0) |
609 |
iso_type = 2; |
610 |
if (strncmp((char *)bootblock_buf+1, "CDROM", 5) == 0) |
611 |
iso_type = 3; |
612 |
|
613 |
if (iso_type != 0) { |
614 |
/* We can't load a kernel if the name |
615 |
isn't specified. */ |
616 |
if (cpu->machine->boot_kernel_filename == NULL || |
617 |
cpu->machine->boot_kernel_filename[0] == '\0') |
618 |
fatal("\nISO9660 filesystem, but no kernel " |
619 |
"specified? (Use the -j option.)\n"); |
620 |
else |
621 |
retval = iso_load_bootblock(m, cpu, boot_disk_id, |
622 |
boot_disk_type, iso_type, bootblock_buf, |
623 |
n_loadp, load_namesp); |
624 |
} |
625 |
|
626 |
free(bootblock_buf); |
627 |
return retval; |
628 |
} |
629 |
|
630 |
|
631 |
/* |
632 |
* emul_new(): |
633 |
* |
634 |
* Returns a reasonably initialized struct emul. |
635 |
*/ |
636 |
struct emul *emul_new(char *name) |
637 |
{ |
638 |
struct emul *e; |
639 |
e = malloc(sizeof(struct emul)); |
640 |
if (e == NULL) { |
641 |
fprintf(stderr, "out of memory in emul_new()\n"); |
642 |
exit(1); |
643 |
} |
644 |
|
645 |
memset(e, 0, sizeof(struct emul)); |
646 |
|
647 |
/* Sane default values: */ |
648 |
e->n_machines = 0; |
649 |
e->next_serial_nr = 1; |
650 |
|
651 |
if (name != NULL) { |
652 |
e->name = strdup(name); |
653 |
if (e->name == NULL) { |
654 |
fprintf(stderr, "out of memory in emul_new()\n"); |
655 |
exit(1); |
656 |
} |
657 |
} |
658 |
|
659 |
return e; |
660 |
} |
661 |
|
662 |
|
663 |
/* |
664 |
* emul_add_machine(): |
665 |
* |
666 |
* Calls machine_new(), adds the new machine into the emul struct, and |
667 |
* returns a pointer to the new machine. |
668 |
* |
669 |
* This function should be used instead of manually calling machine_new(). |
670 |
*/ |
671 |
struct machine *emul_add_machine(struct emul *e, char *name) |
672 |
{ |
673 |
struct machine *m; |
674 |
|
675 |
m = machine_new(name, e); |
676 |
m->serial_nr = (e->next_serial_nr ++); |
677 |
|
678 |
e->n_machines ++; |
679 |
e->machines = realloc(e->machines, |
680 |
sizeof(struct machine *) * e->n_machines); |
681 |
if (e->machines == NULL) { |
682 |
fprintf(stderr, "emul_add_machine(): out of memory\n"); |
683 |
exit(1); |
684 |
} |
685 |
|
686 |
e->machines[e->n_machines - 1] = m; |
687 |
return m; |
688 |
} |
689 |
|
690 |
|
691 |
/* |
692 |
* add_arc_components(): |
693 |
* |
694 |
* This function adds ARCBIOS memory descriptors for the loaded program, |
695 |
* and ARCBIOS components for SCSI devices. |
696 |
*/ |
697 |
static void add_arc_components(struct machine *m) |
698 |
{ |
699 |
struct cpu *cpu = m->cpus[m->bootstrap_cpu]; |
700 |
uint64_t start = cpu->pc & 0x1fffffff; |
701 |
uint64_t len = 0xc00000 - start; |
702 |
struct diskimage *d; |
703 |
uint64_t scsicontroller, scsidevice, scsidisk; |
704 |
|
705 |
if ((cpu->pc >> 60) != 0xf) { |
706 |
start = cpu->pc & 0xffffffffffULL; |
707 |
len = 0xc00000 - start; |
708 |
} |
709 |
|
710 |
len += 1048576 * m->memory_offset_in_mb; |
711 |
|
712 |
/* |
713 |
* NOTE/TODO: magic 12MB end of load program area |
714 |
* |
715 |
* Hm. This breaks the old FreeBSD/MIPS snapshots... |
716 |
*/ |
717 |
#if 0 |
718 |
arcbios_add_memory_descriptor(cpu, |
719 |
0x60000 + m->memory_offset_in_mb * 1048576, |
720 |
start-0x60000 - m->memory_offset_in_mb * 1048576, |
721 |
ARCBIOS_MEM_FreeMemory); |
722 |
#endif |
723 |
arcbios_add_memory_descriptor(cpu, |
724 |
start, len, ARCBIOS_MEM_LoadedProgram); |
725 |
|
726 |
scsicontroller = arcbios_get_scsicontroller(m); |
727 |
if (scsicontroller == 0) |
728 |
return; |
729 |
|
730 |
/* TODO: The device 'name' should defined be somewhere else. */ |
731 |
|
732 |
d = m->first_diskimage; |
733 |
while (d != NULL) { |
734 |
if (d->type == DISKIMAGE_SCSI) { |
735 |
int a, b, flags = COMPONENT_FLAG_Input; |
736 |
char component_string[100]; |
737 |
char *name = "DEC RZ58 (C) DEC2000"; |
738 |
|
739 |
/* Read-write, or read-only? */ |
740 |
if (d->writable) |
741 |
flags |= COMPONENT_FLAG_Output; |
742 |
else |
743 |
flags |= COMPONENT_FLAG_ReadOnly; |
744 |
|
745 |
a = COMPONENT_TYPE_DiskController; |
746 |
b = COMPONENT_TYPE_DiskPeripheral; |
747 |
|
748 |
if (d->is_a_cdrom) { |
749 |
flags |= COMPONENT_FLAG_Removable; |
750 |
a = COMPONENT_TYPE_CDROMController; |
751 |
b = COMPONENT_TYPE_FloppyDiskPeripheral; |
752 |
name = "NEC CD-ROM CDR-210P 1.0 "; |
753 |
} |
754 |
|
755 |
scsidevice = arcbios_addchild_manual(cpu, |
756 |
COMPONENT_CLASS_ControllerClass, |
757 |
a, flags, 1, 2, d->id, 0xffffffff, |
758 |
name, scsicontroller, NULL, 0); |
759 |
|
760 |
scsidisk = arcbios_addchild_manual(cpu, |
761 |
COMPONENT_CLASS_PeripheralClass, |
762 |
b, flags, 1, 2, 0, 0xffffffff, NULL, |
763 |
scsidevice, NULL, 0); |
764 |
|
765 |
/* |
766 |
* Add device string to component address mappings: |
767 |
* "scsi(0)disk(0)rdisk(0)partition(0)" |
768 |
*/ |
769 |
|
770 |
if (d->is_a_cdrom) { |
771 |
snprintf(component_string, |
772 |
sizeof(component_string), |
773 |
"scsi(0)cdrom(%i)", d->id); |
774 |
arcbios_add_string_to_component(m, |
775 |
component_string, scsidevice); |
776 |
|
777 |
snprintf(component_string, |
778 |
sizeof(component_string), |
779 |
"scsi(0)cdrom(%i)fdisk(0)", d->id); |
780 |
arcbios_add_string_to_component(m, |
781 |
component_string, scsidisk); |
782 |
} else { |
783 |
snprintf(component_string, |
784 |
sizeof(component_string), |
785 |
"scsi(0)disk(%i)", d->id); |
786 |
arcbios_add_string_to_component(m, |
787 |
component_string, scsidevice); |
788 |
|
789 |
snprintf(component_string, |
790 |
sizeof(component_string), |
791 |
"scsi(0)disk(%i)rdisk(0)", d->id); |
792 |
arcbios_add_string_to_component(m, |
793 |
component_string, scsidisk); |
794 |
} |
795 |
} |
796 |
|
797 |
d = d->next; |
798 |
} |
799 |
} |
800 |
|
801 |
|
802 |
/* |
803 |
* emul_machine_setup(): |
804 |
* |
805 |
* o) Initialize the hardware (RAM, devices, CPUs, ...) which |
806 |
* will be emulated in this machine. |
807 |
* |
808 |
* o) Load ROM code and/or other programs into emulated memory. |
809 |
* |
810 |
* o) Special hacks needed after programs have been loaded. |
811 |
*/ |
812 |
void emul_machine_setup(struct machine *m, int n_load, char **load_names, |
813 |
int n_devices, char **device_names) |
814 |
{ |
815 |
struct emul *emul; |
816 |
struct cpu *cpu; |
817 |
int i, iadd=4; |
818 |
uint64_t memory_amount, entrypoint = 0, gp = 0, toc = 0; |
819 |
int byte_order; |
820 |
|
821 |
emul = m->emul; |
822 |
|
823 |
debug("machine \"%s\":\n", m->name); |
824 |
debug_indentation(iadd); |
825 |
|
826 |
/* For userland-only, this decides which ARCH/cpu_name to use: */ |
827 |
if (m->machine_type == MACHINE_USERLAND && m->userland_emul != NULL) { |
828 |
useremul_name_to_useremul(NULL, m->userland_emul, |
829 |
&m->arch, &m->machine_name, &m->cpu_name); |
830 |
if (m->arch == ARCH_NOARCH) { |
831 |
printf("Unsupported userland emulation mode.\n"); |
832 |
exit(1); |
833 |
} |
834 |
} |
835 |
|
836 |
if (m->machine_type == MACHINE_NONE) { |
837 |
fatal("No machine type specified?\n"); |
838 |
exit(1); |
839 |
} |
840 |
|
841 |
m->cpu_family = cpu_family_ptr_by_number(m->arch); |
842 |
|
843 |
if (m->arch == ARCH_ALPHA) |
844 |
m->arch_pagesize = 8192; |
845 |
|
846 |
if (m->arch != ARCH_MIPS) |
847 |
m->bintrans_enable = 0; |
848 |
|
849 |
machine_memsize_fix(m); |
850 |
|
851 |
/* |
852 |
* Create the system's memory: |
853 |
* |
854 |
* (Don't print the amount for userland-only emulation; the |
855 |
* size doesn't matter.) |
856 |
*/ |
857 |
if (m->machine_type != MACHINE_USERLAND) |
858 |
debug("memory: %i MB", m->physical_ram_in_mb); |
859 |
memory_amount = (uint64_t)m->physical_ram_in_mb * 1048576; |
860 |
if (m->memory_offset_in_mb > 0) { |
861 |
/* |
862 |
* A special hack is used for some SGI models, |
863 |
* where memory is offset by 128MB to leave room for |
864 |
* EISA space and other things. |
865 |
*/ |
866 |
debug(" (offset by %iMB)", m->memory_offset_in_mb); |
867 |
memory_amount += 1048576 * m->memory_offset_in_mb; |
868 |
} |
869 |
m->memory = memory_new(memory_amount, m->arch); |
870 |
if (m->machine_type != MACHINE_USERLAND) |
871 |
debug("\n"); |
872 |
|
873 |
/* Create CPUs: */ |
874 |
if (m->cpu_name == NULL) |
875 |
machine_default_cputype(m); |
876 |
if (m->ncpus == 0) { |
877 |
/* TODO: This should be moved elsewhere... */ |
878 |
if (m->machine_type == MACHINE_BEBOX) |
879 |
m->ncpus = 2; |
880 |
else if (m->machine_type == MACHINE_ARC && |
881 |
m->machine_subtype == MACHINE_ARC_NEC_R96) |
882 |
m->ncpus = 2; |
883 |
else if (m->machine_type == MACHINE_ARC && |
884 |
m->machine_subtype == MACHINE_ARC_NEC_R98) |
885 |
m->ncpus = 4; |
886 |
else |
887 |
m->ncpus = 1; |
888 |
} |
889 |
m->cpus = malloc(sizeof(struct cpu *) * m->ncpus); |
890 |
if (m->cpus == NULL) { |
891 |
fprintf(stderr, "out of memory\n"); |
892 |
exit(1); |
893 |
} |
894 |
memset(m->cpus, 0, sizeof(struct cpu *) * m->ncpus); |
895 |
|
896 |
/* Initialize dynamic binary translation, if available: */ |
897 |
if (m->bintrans_enable) |
898 |
bintrans_init(m, m->memory); |
899 |
|
900 |
debug("cpu0"); |
901 |
if (m->ncpus > 1) |
902 |
debug(" .. cpu%i", m->ncpus - 1); |
903 |
debug(": "); |
904 |
for (i=0; i<m->ncpus; i++) { |
905 |
m->cpus[i] = cpu_new(m->memory, m, i, m->cpu_name); |
906 |
if (m->bintrans_enable) |
907 |
bintrans_init_cpu(m->cpus[i]); |
908 |
} |
909 |
debug("\n"); |
910 |
|
911 |
#if 0 |
912 |
/* Special case: The Playstation Portable has an additional CPU: */ |
913 |
if (m->machine_type == MACHINE_PSP) { |
914 |
debug("cpu%i: ", m->ncpus); |
915 |
m->cpus[m->ncpus] = cpu_new(m->memory, m, |
916 |
0 /* use 0 here to show info with debug() */, |
917 |
"Allegrex" /* TODO */); |
918 |
if (m->bintrans_enable) |
919 |
bintrans_init_cpu(m->cpus[m->ncpus]); |
920 |
debug("\n"); |
921 |
m->ncpus ++; |
922 |
} |
923 |
#endif |
924 |
|
925 |
if (m->use_random_bootstrap_cpu) |
926 |
m->bootstrap_cpu = random() % m->ncpus; |
927 |
else |
928 |
m->bootstrap_cpu = 0; |
929 |
|
930 |
cpu = m->cpus[m->bootstrap_cpu]; |
931 |
|
932 |
/* Set cpu->useremul_syscall, and use userland_memory_rw: */ |
933 |
if (m->userland_emul != NULL) { |
934 |
useremul_name_to_useremul(cpu, |
935 |
m->userland_emul, NULL, NULL, NULL); |
936 |
|
937 |
switch (m->arch) { |
938 |
#ifdef ENABLE_ALPHA |
939 |
case ARCH_ALPHA: |
940 |
cpu->memory_rw = alpha_userland_memory_rw; |
941 |
break; |
942 |
#endif |
943 |
default:cpu->memory_rw = userland_memory_rw; |
944 |
} |
945 |
} |
946 |
|
947 |
if (m->use_x11) |
948 |
x11_init(m); |
949 |
|
950 |
/* Fill memory with random bytes: */ |
951 |
if (m->random_mem_contents) { |
952 |
for (i=0; i<m->physical_ram_in_mb * 1048576; i+=256) { |
953 |
unsigned char data[256]; |
954 |
unsigned int j; |
955 |
for (j=0; j<sizeof(data); j++) |
956 |
data[j] = random() & 255; |
957 |
cpu->memory_rw(cpu, m->memory, i, data, sizeof(data), |
958 |
MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS | PHYSICAL); |
959 |
} |
960 |
} |
961 |
|
962 |
if (m->userland_emul != NULL) { |
963 |
/* |
964 |
* For userland-only emulation, no machine emulation |
965 |
* is needed. |
966 |
*/ |
967 |
} else { |
968 |
for (i=0; i<n_devices; i++) |
969 |
device_add(m, device_names[i]); |
970 |
|
971 |
machine_setup(m); |
972 |
} |
973 |
|
974 |
diskimage_dump_info(m); |
975 |
|
976 |
/* Load files (ROM code, boot code, ...) into memory: */ |
977 |
if (n_load == 0) { |
978 |
if (m->first_diskimage != NULL) { |
979 |
if (!load_bootblock(m, cpu, &n_load, &load_names)) { |
980 |
fprintf(stderr, "\nNo executable files were" |
981 |
" specified, and booting directly from disk" |
982 |
" failed.\n"); |
983 |
exit(1); |
984 |
} |
985 |
} else { |
986 |
fprintf(stderr, "No executable file(s) loaded, and " |
987 |
"we are not booting directly from a disk image." |
988 |
"\nAborting.\n"); |
989 |
exit(1); |
990 |
} |
991 |
} |
992 |
|
993 |
while (n_load > 0) { |
994 |
FILE *tmp_f; |
995 |
char *name_to_load = *load_names; |
996 |
int remove_after_load = 0; |
997 |
|
998 |
/* Special hack for removing temporary files: */ |
999 |
if (name_to_load[0] == 8) { |
1000 |
name_to_load ++; |
1001 |
remove_after_load = 1; |
1002 |
} |
1003 |
|
1004 |
/* |
1005 |
* gzipped files are automagically gunzipped: |
1006 |
* NOTE/TODO: This isn't secure. system() is used. |
1007 |
*/ |
1008 |
tmp_f = fopen(name_to_load, "r"); |
1009 |
if (tmp_f != NULL) { |
1010 |
unsigned char buf[2]; /* gzip header */ |
1011 |
memset(buf, 0, sizeof(buf)); |
1012 |
fread(buf, 1, sizeof(buf), tmp_f); |
1013 |
if (buf[0]==0x1f && buf[1]==0x8b) { |
1014 |
size_t zzlen = strlen(name_to_load)*2 + 100; |
1015 |
char *zz = malloc(zzlen); |
1016 |
debug("gunziping %s\n", name_to_load); |
1017 |
/* |
1018 |
* gzip header found. If this was a file |
1019 |
* extracted from, say, a CDROM image, then it |
1020 |
* already has a temporary name. Otherwise we |
1021 |
* have to gunzip into a temporary file. |
1022 |
*/ |
1023 |
if (remove_after_load) { |
1024 |
snprintf(zz, zzlen, "mv %s %s.gz", |
1025 |
name_to_load, name_to_load); |
1026 |
system(zz); |
1027 |
snprintf(zz, zzlen, "gunzip %s.gz", |
1028 |
name_to_load); |
1029 |
system(zz); |
1030 |
} else { |
1031 |
/* gunzip into new temp file: */ |
1032 |
int tmpfile_handle; |
1033 |
char *new_temp_name = |
1034 |
strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
1035 |
tmpfile_handle = mkstemp(new_temp_name); |
1036 |
close(tmpfile_handle); |
1037 |
snprintf(zz, zzlen, "gunzip -c '%s' > " |
1038 |
"%s", name_to_load, new_temp_name); |
1039 |
system(zz); |
1040 |
name_to_load = new_temp_name; |
1041 |
remove_after_load = 1; |
1042 |
} |
1043 |
free(zz); |
1044 |
} |
1045 |
fclose(tmp_f); |
1046 |
} |
1047 |
|
1048 |
/* |
1049 |
* Ugly (but usable) hack for Playstation Portable: If the |
1050 |
* filename ends with ".pbp" and the file contains an ELF |
1051 |
* header, then extract the ELF file into a temporary file. |
1052 |
*/ |
1053 |
if (strlen(name_to_load) > 4 && strcasecmp(name_to_load + |
1054 |
strlen(name_to_load) - 4, ".pbp") == 0 && |
1055 |
(tmp_f = fopen(name_to_load, "r")) != NULL) { |
1056 |
off_t filesize, j, found=0; |
1057 |
unsigned char *buf; |
1058 |
fseek(tmp_f, 0, SEEK_END); |
1059 |
filesize = ftello(tmp_f); |
1060 |
fseek(tmp_f, 0, SEEK_SET); |
1061 |
buf = malloc(filesize); |
1062 |
if (buf == NULL) { |
1063 |
fprintf(stderr, "out of memory while trying" |
1064 |
" to read %s\n", name_to_load); |
1065 |
exit(1); |
1066 |
} |
1067 |
fread(buf, 1, filesize, tmp_f); |
1068 |
fclose(tmp_f); |
1069 |
/* Search for the ELF header, from offset 1 (!): */ |
1070 |
for (j=1; j<filesize - 4; j++) |
1071 |
if (memcmp(buf + j, ELFMAG, SELFMAG) == 0) { |
1072 |
found = j; |
1073 |
break; |
1074 |
} |
1075 |
if (found != 0) { |
1076 |
int tmpfile_handle; |
1077 |
char *new_temp_name = |
1078 |
strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
1079 |
debug("extracting ELF from %s (offset 0x%x)\n", |
1080 |
name_to_load, (int)found); |
1081 |
tmpfile_handle = mkstemp(new_temp_name); |
1082 |
write(tmpfile_handle, buf + found, |
1083 |
filesize - found); |
1084 |
close(tmpfile_handle); |
1085 |
name_to_load = new_temp_name; |
1086 |
remove_after_load = 1; |
1087 |
} |
1088 |
} |
1089 |
|
1090 |
/* Special things required _before_ loading the file: */ |
1091 |
switch (m->arch) { |
1092 |
case ARCH_X86: |
1093 |
/* |
1094 |
* X86 machines normally don't need to load any files, |
1095 |
* they can boot from disk directly. Therefore, an x86 |
1096 |
* machine usually boots up in 16-bit real mode. When |
1097 |
* loading a 32-bit (or even 64-bit) ELF, that's not |
1098 |
* very nice, hence this special case. |
1099 |
*/ |
1100 |
pc_bios_simple_pmode_setup(cpu); |
1101 |
break; |
1102 |
} |
1103 |
|
1104 |
byte_order = NO_BYTE_ORDER_OVERRIDE; |
1105 |
|
1106 |
/* |
1107 |
* Load the file: :-) |
1108 |
*/ |
1109 |
file_load(m, m->memory, name_to_load, &entrypoint, |
1110 |
m->arch, &gp, &byte_order, &toc); |
1111 |
|
1112 |
if (remove_after_load) { |
1113 |
debug("removing %s\n", name_to_load); |
1114 |
unlink(name_to_load); |
1115 |
} |
1116 |
|
1117 |
if (byte_order != NO_BYTE_ORDER_OVERRIDE) |
1118 |
cpu->byte_order = byte_order; |
1119 |
|
1120 |
cpu->pc = entrypoint; |
1121 |
|
1122 |
switch (m->arch) { |
1123 |
case ARCH_MIPS: |
1124 |
if ((cpu->pc >> 32) == 0 |
1125 |
&& (cpu->pc & 0x80000000ULL)) |
1126 |
cpu->pc |= 0xffffffff00000000ULL; |
1127 |
|
1128 |
cpu->cd.mips.gpr[MIPS_GPR_GP] = gp; |
1129 |
|
1130 |
if ((cpu->cd.mips.gpr[MIPS_GPR_GP] >> 32) == 0 && |
1131 |
(cpu->cd.mips.gpr[MIPS_GPR_GP] & 0x80000000ULL)) |
1132 |
cpu->cd.mips.gpr[MIPS_GPR_GP] |= |
1133 |
0xffffffff00000000ULL; |
1134 |
break; |
1135 |
|
1136 |
case ARCH_PPC: |
1137 |
/* See http://www.linuxbase.org/spec/ELF/ppc64/ |
1138 |
spec/x458.html for more info. */ |
1139 |
cpu->cd.ppc.gpr[2] = toc; |
1140 |
/* TODO */ |
1141 |
break; |
1142 |
|
1143 |
case ARCH_ALPHA: |
1144 |
/* For position-independant code: */ |
1145 |
cpu->cd.alpha.r[ALPHA_T12] = cpu->pc; |
1146 |
break; |
1147 |
|
1148 |
case ARCH_SPARC: |
1149 |
break; |
1150 |
|
1151 |
case ARCH_IA64: |
1152 |
break; |
1153 |
|
1154 |
case ARCH_M68K: |
1155 |
break; |
1156 |
|
1157 |
case ARCH_ARM: |
1158 |
cpu->pc &= 0xfffffffc; |
1159 |
cpu->cd.arm.r[ARM_PC] = cpu->pc; |
1160 |
break; |
1161 |
|
1162 |
case ARCH_X86: |
1163 |
/* |
1164 |
* NOTE: The toc field is used to indicate an ELF32 |
1165 |
* or ELF64 load. |
1166 |
*/ |
1167 |
switch (toc) { |
1168 |
case 0: /* 16-bit? TODO */ |
1169 |
cpu->pc &= 0xffffffffULL; |
1170 |
break; |
1171 |
case 1: /* 32-bit. */ |
1172 |
cpu->pc &= 0xffffffffULL; |
1173 |
break; |
1174 |
case 2: /* 64-bit: TODO */ |
1175 |
fatal("64-bit x86 load. TODO\n"); |
1176 |
exit(1); |
1177 |
} |
1178 |
break; |
1179 |
|
1180 |
default: |
1181 |
fatal("emul_machine_setup(): Internal error: " |
1182 |
"Unimplemented arch %i\n", m->arch); |
1183 |
exit(1); |
1184 |
} |
1185 |
|
1186 |
/* |
1187 |
* For userland emulation, the remaining items |
1188 |
* on the command line will be passed as parameters |
1189 |
* to the emulated program, and will not be treated |
1190 |
* as filenames to load into the emulator. |
1191 |
* The program's name will be in load_names[0], and the |
1192 |
* rest of the parameters in load_names[1] and up. |
1193 |
*/ |
1194 |
if (m->userland_emul != NULL) |
1195 |
break; |
1196 |
|
1197 |
n_load --; |
1198 |
load_names ++; |
1199 |
} |
1200 |
|
1201 |
if (m->byte_order_override != NO_BYTE_ORDER_OVERRIDE) |
1202 |
cpu->byte_order = m->byte_order_override; |
1203 |
|
1204 |
/* Same byte order and entrypoint for all CPUs: */ |
1205 |
for (i=0; i<m->ncpus; i++) |
1206 |
if (i != m->bootstrap_cpu) { |
1207 |
m->cpus[i]->byte_order = cpu->byte_order; |
1208 |
m->cpus[i]->pc = cpu->pc; |
1209 |
} |
1210 |
|
1211 |
if (m->userland_emul != NULL) |
1212 |
useremul_setup(cpu, n_load, load_names); |
1213 |
|
1214 |
/* Startup the bootstrap CPU: */ |
1215 |
cpu->bootstrap_cpu_flag = 1; |
1216 |
cpu->running = 1; |
1217 |
|
1218 |
/* ... or pause all CPUs, if start_paused is set: */ |
1219 |
if (m->start_paused) { |
1220 |
for (i=0; i<m->ncpus; i++) |
1221 |
m->cpus[i]->running = 0; |
1222 |
} |
1223 |
|
1224 |
/* Add PC dump points: */ |
1225 |
add_dump_points(m); |
1226 |
|
1227 |
/* TODO: This is MIPS-specific! */ |
1228 |
if (m->machine_type == MACHINE_DEC && |
1229 |
cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
1230 |
add_symbol_name(&m->symbol_context, |
1231 |
0x9fff0000, 0x10000, "r2k3k_cache", 0, 0); |
1232 |
|
1233 |
symbol_recalc_sizes(&m->symbol_context); |
1234 |
|
1235 |
if (m->max_random_cycles_per_chunk > 0) |
1236 |
debug("using random cycle chunks (1 to %i cycles)\n", |
1237 |
m->max_random_cycles_per_chunk); |
1238 |
|
1239 |
/* Special hack for ARC/SGI emulation: */ |
1240 |
if ((m->machine_type == MACHINE_ARC || |
1241 |
m->machine_type == MACHINE_SGI) && m->prom_emulation) |
1242 |
add_arc_components(m); |
1243 |
|
1244 |
debug("starting cpu%i at ", m->bootstrap_cpu); |
1245 |
switch (m->arch) { |
1246 |
case ARCH_MIPS: |
1247 |
if (cpu->is_32bit) { |
1248 |
debug("0x%08x", (int)m->cpus[ |
1249 |
m->bootstrap_cpu]->pc); |
1250 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
1251 |
debug(" (gp=0x%08x)", (int)m->cpus[ |
1252 |
m->bootstrap_cpu]->cd.mips.gpr[ |
1253 |
MIPS_GPR_GP]); |
1254 |
} else { |
1255 |
debug("0x%016llx", (long long)m->cpus[ |
1256 |
m->bootstrap_cpu]->pc); |
1257 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
1258 |
debug(" (gp=0x%016llx)", (long long) |
1259 |
cpu->cd.mips.gpr[MIPS_GPR_GP]); |
1260 |
} |
1261 |
break; |
1262 |
case ARCH_PPC: |
1263 |
if (cpu->cd.ppc.bits == 32) |
1264 |
debug("0x%08x", (int)entrypoint); |
1265 |
else |
1266 |
debug("0x%016llx", (long long)entrypoint); |
1267 |
break; |
1268 |
case ARCH_ARM: |
1269 |
/* ARM cpus aren't 64-bit: */ |
1270 |
debug("0x%08x", (int)entrypoint); |
1271 |
break; |
1272 |
case ARCH_X86: |
1273 |
debug("0x%04x:0x%llx", cpu->cd.x86.s[X86_S_CS], |
1274 |
(long long)cpu->pc); |
1275 |
break; |
1276 |
default: |
1277 |
debug("0x%016llx", (long long)cpu->pc); |
1278 |
} |
1279 |
debug("\n"); |
1280 |
|
1281 |
debug_indentation(-iadd); |
1282 |
} |
1283 |
|
1284 |
|
1285 |
/* |
1286 |
* emul_dumpinfo(): |
1287 |
* |
1288 |
* Dump info about all machines in an emul. |
1289 |
*/ |
1290 |
void emul_dumpinfo(struct emul *e) |
1291 |
{ |
1292 |
int j, nm, iadd = 4; |
1293 |
|
1294 |
if (e->net != NULL) |
1295 |
net_dumpinfo(e->net); |
1296 |
|
1297 |
nm = e->n_machines; |
1298 |
for (j=0; j<nm; j++) { |
1299 |
debug("machine %i: \"%s\"\n", j, e->machines[j]->name); |
1300 |
debug_indentation(iadd); |
1301 |
machine_dumpinfo(e->machines[j]); |
1302 |
debug_indentation(-iadd); |
1303 |
} |
1304 |
} |
1305 |
|
1306 |
|
1307 |
/* |
1308 |
* emul_simple_init(): |
1309 |
* |
1310 |
* For a normal setup: |
1311 |
* |
1312 |
* o) Initialize a network. |
1313 |
* o) Initialize one machine. |
1314 |
* |
1315 |
* For a userland-only setup: |
1316 |
* |
1317 |
* o) Initialize a "pseudo"-machine. |
1318 |
*/ |
1319 |
void emul_simple_init(struct emul *emul) |
1320 |
{ |
1321 |
int iadd=4; |
1322 |
struct machine *m; |
1323 |
|
1324 |
if (emul->n_machines != 1) { |
1325 |
fprintf(stderr, "emul_simple_init(): n_machines != 1\n"); |
1326 |
exit(1); |
1327 |
} |
1328 |
|
1329 |
m = emul->machines[0]; |
1330 |
|
1331 |
if (m->userland_emul == NULL) { |
1332 |
debug("Simple setup...\n"); |
1333 |
debug_indentation(iadd); |
1334 |
|
1335 |
/* Create a simple network: */ |
1336 |
emul->net = net_init(emul, NET_INIT_FLAG_GATEWAY, |
1337 |
"10.0.0.0", 8, NULL, 0, 0); |
1338 |
} else { |
1339 |
/* Userland pseudo-machine: */ |
1340 |
debug("Syscall emulation (userland-only) setup...\n"); |
1341 |
debug_indentation(iadd); |
1342 |
} |
1343 |
|
1344 |
/* Create the machine: */ |
1345 |
emul_machine_setup(m, extra_argc, extra_argv, 0, NULL); |
1346 |
|
1347 |
debug_indentation(-iadd); |
1348 |
} |
1349 |
|
1350 |
|
1351 |
/* |
1352 |
* emul_create_from_configfile(): |
1353 |
* |
1354 |
* Create an emul struct by reading settings from a configuration file. |
1355 |
*/ |
1356 |
struct emul *emul_create_from_configfile(char *fname) |
1357 |
{ |
1358 |
int iadd = 4; |
1359 |
struct emul *e = emul_new(fname); |
1360 |
FILE *f; |
1361 |
char buf[128]; |
1362 |
size_t len; |
1363 |
|
1364 |
debug("Creating emulation from configfile \"%s\":\n", fname); |
1365 |
debug_indentation(iadd); |
1366 |
|
1367 |
f = fopen(fname, "r"); |
1368 |
if (f == NULL) { |
1369 |
perror(fname); |
1370 |
exit(1); |
1371 |
} |
1372 |
|
1373 |
/* Read header: (must be !!gxemul) */ |
1374 |
len = fread(buf, 1, 8, f); |
1375 |
if (len != 8 || strncmp(buf, "!!gxemul", 8) != 0) { |
1376 |
fprintf(stderr, "%s: must start with '!!gxemul'\n", fname); |
1377 |
exit(1); |
1378 |
} |
1379 |
|
1380 |
/* Restart from beginning: */ |
1381 |
rewind(f); |
1382 |
|
1383 |
emul_parse_config(e, f); |
1384 |
|
1385 |
fclose(f); |
1386 |
debug_indentation(-iadd); |
1387 |
return e; |
1388 |
} |
1389 |
|
1390 |
|
1391 |
/* |
1392 |
* emul_run(): |
1393 |
* |
1394 |
* o) Set up things needed before running emulations. |
1395 |
* |
1396 |
* o) Run emulations (one or more, in parallel). |
1397 |
* |
1398 |
* o) De-initialize things. |
1399 |
*/ |
1400 |
void emul_run(struct emul **emuls, int n_emuls) |
1401 |
{ |
1402 |
struct emul *e; |
1403 |
int i = 0, j, go = 1, n, anything; |
1404 |
|
1405 |
if (n_emuls < 1) { |
1406 |
fprintf(stderr, "emul_run(): no thing to do\n"); |
1407 |
return; |
1408 |
} |
1409 |
|
1410 |
atexit(fix_console); |
1411 |
|
1412 |
i = 79; |
1413 |
while (i-- > 0) |
1414 |
debug("-"); |
1415 |
debug("\n\n"); |
1416 |
|
1417 |
/* Initialize the interactive debugger: */ |
1418 |
debugger_init(emuls, n_emuls); |
1419 |
|
1420 |
/* |
1421 |
* console_init_main() makes sure that the terminal is in a |
1422 |
* reasonable state. |
1423 |
* |
1424 |
* The SIGINT handler is for CTRL-C (enter the interactive debugger). |
1425 |
* |
1426 |
* The SIGCONT handler is invoked whenever the user presses CTRL-Z |
1427 |
* (or sends SIGSTOP) and then continues. It makes sure that the |
1428 |
* terminal is in an expected state. |
1429 |
*/ |
1430 |
console_init_main(emuls[0]); /* TODO: what is a good argument? */ |
1431 |
signal(SIGINT, debugger_activate); |
1432 |
signal(SIGCONT, console_sigcont); |
1433 |
|
1434 |
/* Not in verbose mode? Then set quiet_mode. */ |
1435 |
if (!verbose) |
1436 |
quiet_mode = 1; |
1437 |
|
1438 |
/* Initialize all CPUs in all machines in all emulations: */ |
1439 |
for (i=0; i<n_emuls; i++) { |
1440 |
e = emuls[i]; |
1441 |
if (e == NULL) |
1442 |
continue; |
1443 |
for (j=0; j<e->n_machines; j++) |
1444 |
cpu_run_init(e->machines[j]); |
1445 |
} |
1446 |
|
1447 |
/* TODO: Generalize: */ |
1448 |
if (emuls[0]->machines[0]->show_trace_tree) |
1449 |
cpu_functioncall_trace(emuls[0]->machines[0]->cpus[0], |
1450 |
emuls[0]->machines[0]->cpus[0]->pc); |
1451 |
|
1452 |
/* |
1453 |
* MAIN LOOP: |
1454 |
* |
1455 |
* Run all emulations in parallel, running each machine in |
1456 |
* each emulation. |
1457 |
*/ |
1458 |
while (go) { |
1459 |
go = 0; |
1460 |
|
1461 |
x11_check_event(emuls, n_emuls); |
1462 |
|
1463 |
for (i=0; i<n_emuls; i++) { |
1464 |
e = emuls[i]; |
1465 |
if (e == NULL) |
1466 |
continue; |
1467 |
|
1468 |
for (j=0; j<e->n_machines; j++) { |
1469 |
/* TODO: cpu_run() is a strange name, since |
1470 |
there can be multiple cpus in a machine */ |
1471 |
anything = cpu_run(e, e->machines[j]); |
1472 |
if (anything) |
1473 |
go = 1; |
1474 |
} |
1475 |
} |
1476 |
} |
1477 |
|
1478 |
/* Deinitialize all CPUs in all machines in all emulations: */ |
1479 |
for (i=0; i<n_emuls; i++) { |
1480 |
e = emuls[i]; |
1481 |
if (e == NULL) |
1482 |
continue; |
1483 |
for (j=0; j<e->n_machines; j++) |
1484 |
cpu_run_deinit(e->machines[j]); |
1485 |
} |
1486 |
|
1487 |
/* force_debugger_at_exit flag set? Then enter the debugger: */ |
1488 |
if (force_debugger_at_exit) { |
1489 |
quiet_mode = 0; |
1490 |
debugger_reset(); |
1491 |
debugger(); |
1492 |
} |
1493 |
|
1494 |
/* Any machine using X11? Then we should wait before exiting: */ |
1495 |
n = 0; |
1496 |
for (i=0; i<n_emuls; i++) |
1497 |
for (j=0; j<emuls[i]->n_machines; j++) |
1498 |
if (emuls[i]->machines[j]->use_x11) |
1499 |
n++; |
1500 |
if (n > 0) { |
1501 |
printf("Press enter to quit.\n"); |
1502 |
while (!console_charavail(MAIN_CONSOLE)) { |
1503 |
x11_check_event(emuls, n_emuls); |
1504 |
usleep(1); |
1505 |
} |
1506 |
console_readchar(MAIN_CONSOLE); |
1507 |
} |
1508 |
|
1509 |
console_deinit(); |
1510 |
} |
1511 |
|