root / vl.c @ dff38e7b
History | View | Annotate | Download (34.8 kB)
1 |
/*
|
---|---|
2 |
* QEMU System Emulator
|
3 |
*
|
4 |
* Copyright (c) 2003-2004 Fabrice Bellard
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include <stdlib.h> |
25 |
#include <stdio.h> |
26 |
#include <stdarg.h> |
27 |
#include <string.h> |
28 |
#include <ctype.h> |
29 |
#include <getopt.h> |
30 |
#include <inttypes.h> |
31 |
#include <unistd.h> |
32 |
#include <sys/mman.h> |
33 |
#include <fcntl.h> |
34 |
#include <signal.h> |
35 |
#include <time.h> |
36 |
#include <sys/time.h> |
37 |
#include <malloc.h> |
38 |
#include <termios.h> |
39 |
#include <sys/poll.h> |
40 |
#include <errno.h> |
41 |
#include <sys/wait.h> |
42 |
#include <pty.h> |
43 |
|
44 |
#include <sys/ioctl.h> |
45 |
#include <sys/socket.h> |
46 |
#include <linux/if.h> |
47 |
#include <linux/if_tun.h> |
48 |
|
49 |
#include "disas.h" |
50 |
|
51 |
#include "vl.h" |
52 |
|
53 |
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" |
54 |
|
55 |
//#define DEBUG_UNUSED_IOPORT
|
56 |
|
57 |
#if !defined(CONFIG_SOFTMMU)
|
58 |
#define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024) |
59 |
#else
|
60 |
#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024) |
61 |
#endif
|
62 |
|
63 |
#if defined (TARGET_I386)
|
64 |
#elif defined (TARGET_PPC)
|
65 |
//#define USE_OPEN_FIRMWARE
|
66 |
#if !defined (USE_OPEN_FIRMWARE)
|
67 |
#define KERNEL_LOAD_ADDR 0x01000000 |
68 |
#define KERNEL_STACK_ADDR 0x01200000 |
69 |
#else
|
70 |
#define KERNEL_LOAD_ADDR 0x00000000 |
71 |
#define KERNEL_STACK_ADDR 0x00400000 |
72 |
#endif
|
73 |
#endif
|
74 |
|
75 |
#define GUI_REFRESH_INTERVAL 30 |
76 |
|
77 |
/* XXX: use a two level table to limit memory usage */
|
78 |
#define MAX_IOPORTS 65536 |
79 |
|
80 |
const char *bios_dir = CONFIG_QEMU_SHAREDIR; |
81 |
char phys_ram_file[1024]; |
82 |
CPUState *global_env; |
83 |
CPUState *cpu_single_env; |
84 |
void *ioport_opaque[MAX_IOPORTS];
|
85 |
IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
|
86 |
IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
|
87 |
BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD]; |
88 |
int vga_ram_size;
|
89 |
static DisplayState display_state;
|
90 |
int nographic;
|
91 |
int term_inited;
|
92 |
int64_t ticks_per_sec; |
93 |
int boot_device = 'c'; |
94 |
static int ram_size; |
95 |
static char network_script[1024]; |
96 |
int pit_min_timer_count = 0; |
97 |
int nb_nics;
|
98 |
NetDriverState nd_table[MAX_NICS]; |
99 |
SerialState *serial_console; |
100 |
|
101 |
/***********************************************************/
|
102 |
/* x86 io ports */
|
103 |
|
104 |
uint32_t default_ioport_readb(void *opaque, uint32_t address)
|
105 |
{ |
106 |
#ifdef DEBUG_UNUSED_IOPORT
|
107 |
fprintf(stderr, "inb: port=0x%04x\n", address);
|
108 |
#endif
|
109 |
return 0xff; |
110 |
} |
111 |
|
112 |
void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data) |
113 |
{ |
114 |
#ifdef DEBUG_UNUSED_IOPORT
|
115 |
fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
|
116 |
#endif
|
117 |
} |
118 |
|
119 |
/* default is to make two byte accesses */
|
120 |
uint32_t default_ioport_readw(void *opaque, uint32_t address)
|
121 |
{ |
122 |
uint32_t data; |
123 |
data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address); |
124 |
data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8; |
125 |
return data;
|
126 |
} |
127 |
|
128 |
void default_ioport_writew(void *opaque, uint32_t address, uint32_t data) |
129 |
{ |
130 |
ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff); |
131 |
ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff); |
132 |
} |
133 |
|
134 |
uint32_t default_ioport_readl(void *opaque, uint32_t address)
|
135 |
{ |
136 |
#ifdef DEBUG_UNUSED_IOPORT
|
137 |
fprintf(stderr, "inl: port=0x%04x\n", address);
|
138 |
#endif
|
139 |
return 0xffffffff; |
140 |
} |
141 |
|
142 |
void default_ioport_writel(void *opaque, uint32_t address, uint32_t data) |
143 |
{ |
144 |
#ifdef DEBUG_UNUSED_IOPORT
|
145 |
fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
|
146 |
#endif
|
147 |
} |
148 |
|
149 |
void init_ioports(void) |
150 |
{ |
151 |
int i;
|
152 |
|
153 |
for(i = 0; i < MAX_IOPORTS; i++) { |
154 |
ioport_read_table[0][i] = default_ioport_readb;
|
155 |
ioport_write_table[0][i] = default_ioport_writeb;
|
156 |
ioport_read_table[1][i] = default_ioport_readw;
|
157 |
ioport_write_table[1][i] = default_ioport_writew;
|
158 |
ioport_read_table[2][i] = default_ioport_readl;
|
159 |
ioport_write_table[2][i] = default_ioport_writel;
|
160 |
} |
161 |
} |
162 |
|
163 |
/* size is the word size in byte */
|
164 |
int register_ioport_read(int start, int length, int size, |
165 |
IOPortReadFunc *func, void *opaque)
|
166 |
{ |
167 |
int i, bsize;
|
168 |
|
169 |
if (size == 1) { |
170 |
bsize = 0;
|
171 |
} else if (size == 2) { |
172 |
bsize = 1;
|
173 |
} else if (size == 4) { |
174 |
bsize = 2;
|
175 |
} else {
|
176 |
hw_error("register_ioport_read: invalid size");
|
177 |
return -1; |
178 |
} |
179 |
for(i = start; i < start + length; i += size) {
|
180 |
ioport_read_table[bsize][i] = func; |
181 |
if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque) |
182 |
hw_error("register_ioport_read: invalid opaque");
|
183 |
ioport_opaque[i] = opaque; |
184 |
} |
185 |
return 0; |
186 |
} |
187 |
|
188 |
/* size is the word size in byte */
|
189 |
int register_ioport_write(int start, int length, int size, |
190 |
IOPortWriteFunc *func, void *opaque)
|
191 |
{ |
192 |
int i, bsize;
|
193 |
|
194 |
if (size == 1) { |
195 |
bsize = 0;
|
196 |
} else if (size == 2) { |
197 |
bsize = 1;
|
198 |
} else if (size == 4) { |
199 |
bsize = 2;
|
200 |
} else {
|
201 |
hw_error("register_ioport_write: invalid size");
|
202 |
return -1; |
203 |
} |
204 |
for(i = start; i < start + length; i += size) {
|
205 |
ioport_write_table[bsize][i] = func; |
206 |
if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque) |
207 |
hw_error("register_ioport_read: invalid opaque");
|
208 |
ioport_opaque[i] = opaque; |
209 |
} |
210 |
return 0; |
211 |
} |
212 |
|
213 |
void pstrcpy(char *buf, int buf_size, const char *str) |
214 |
{ |
215 |
int c;
|
216 |
char *q = buf;
|
217 |
|
218 |
if (buf_size <= 0) |
219 |
return;
|
220 |
|
221 |
for(;;) {
|
222 |
c = *str++; |
223 |
if (c == 0 || q >= buf + buf_size - 1) |
224 |
break;
|
225 |
*q++ = c; |
226 |
} |
227 |
*q = '\0';
|
228 |
} |
229 |
|
230 |
/* strcat and truncate. */
|
231 |
char *pstrcat(char *buf, int buf_size, const char *s) |
232 |
{ |
233 |
int len;
|
234 |
len = strlen(buf); |
235 |
if (len < buf_size)
|
236 |
pstrcpy(buf + len, buf_size - len, s); |
237 |
return buf;
|
238 |
} |
239 |
|
240 |
/* return the size or -1 if error */
|
241 |
int load_image(const char *filename, uint8_t *addr) |
242 |
{ |
243 |
int fd, size;
|
244 |
fd = open(filename, O_RDONLY); |
245 |
if (fd < 0) |
246 |
return -1; |
247 |
size = lseek(fd, 0, SEEK_END);
|
248 |
lseek(fd, 0, SEEK_SET);
|
249 |
if (read(fd, addr, size) != size) {
|
250 |
close(fd); |
251 |
return -1; |
252 |
} |
253 |
close(fd); |
254 |
return size;
|
255 |
} |
256 |
|
257 |
void cpu_outb(CPUState *env, int addr, int val) |
258 |
{ |
259 |
addr &= (MAX_IOPORTS - 1);
|
260 |
ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
|
261 |
} |
262 |
|
263 |
void cpu_outw(CPUState *env, int addr, int val) |
264 |
{ |
265 |
addr &= (MAX_IOPORTS - 1);
|
266 |
ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
|
267 |
} |
268 |
|
269 |
void cpu_outl(CPUState *env, int addr, int val) |
270 |
{ |
271 |
addr &= (MAX_IOPORTS - 1);
|
272 |
ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
|
273 |
} |
274 |
|
275 |
int cpu_inb(CPUState *env, int addr) |
276 |
{ |
277 |
addr &= (MAX_IOPORTS - 1);
|
278 |
return ioport_read_table[0][addr](ioport_opaque[addr], addr); |
279 |
} |
280 |
|
281 |
int cpu_inw(CPUState *env, int addr) |
282 |
{ |
283 |
addr &= (MAX_IOPORTS - 1);
|
284 |
return ioport_read_table[1][addr](ioport_opaque[addr], addr); |
285 |
} |
286 |
|
287 |
int cpu_inl(CPUState *env, int addr) |
288 |
{ |
289 |
addr &= (MAX_IOPORTS - 1);
|
290 |
return ioport_read_table[2][addr](ioport_opaque[addr], addr); |
291 |
} |
292 |
|
293 |
/***********************************************************/
|
294 |
void hw_error(const char *fmt, ...) |
295 |
{ |
296 |
va_list ap; |
297 |
|
298 |
va_start(ap, fmt); |
299 |
fprintf(stderr, "qemu: hardware error: ");
|
300 |
vfprintf(stderr, fmt, ap); |
301 |
fprintf(stderr, "\n");
|
302 |
#ifdef TARGET_I386
|
303 |
cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP); |
304 |
#else
|
305 |
cpu_dump_state(global_env, stderr, 0);
|
306 |
#endif
|
307 |
va_end(ap); |
308 |
abort(); |
309 |
} |
310 |
|
311 |
#if defined(__powerpc__)
|
312 |
|
313 |
static inline uint32_t get_tbl(void) |
314 |
{ |
315 |
uint32_t tbl; |
316 |
asm volatile("mftb %0" : "=r" (tbl)); |
317 |
return tbl;
|
318 |
} |
319 |
|
320 |
static inline uint32_t get_tbu(void) |
321 |
{ |
322 |
uint32_t tbl; |
323 |
asm volatile("mftbu %0" : "=r" (tbl)); |
324 |
return tbl;
|
325 |
} |
326 |
|
327 |
int64_t cpu_get_real_ticks(void)
|
328 |
{ |
329 |
uint32_t l, h, h1; |
330 |
/* NOTE: we test if wrapping has occurred */
|
331 |
do {
|
332 |
h = get_tbu(); |
333 |
l = get_tbl(); |
334 |
h1 = get_tbu(); |
335 |
} while (h != h1);
|
336 |
return ((int64_t)h << 32) | l; |
337 |
} |
338 |
|
339 |
#elif defined(__i386__)
|
340 |
|
341 |
int64_t cpu_get_real_ticks(void)
|
342 |
{ |
343 |
int64_t val; |
344 |
asm("rdtsc" : "=A" (val)); |
345 |
return val;
|
346 |
} |
347 |
|
348 |
#else
|
349 |
#error unsupported CPU
|
350 |
#endif
|
351 |
|
352 |
static int64_t cpu_ticks_offset;
|
353 |
static int64_t cpu_ticks_last;
|
354 |
|
355 |
int64_t cpu_get_ticks(void)
|
356 |
{ |
357 |
return cpu_get_real_ticks() + cpu_ticks_offset;
|
358 |
} |
359 |
|
360 |
/* enable cpu_get_ticks() */
|
361 |
void cpu_enable_ticks(void) |
362 |
{ |
363 |
cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks(); |
364 |
} |
365 |
|
366 |
/* disable cpu_get_ticks() : the clock is stopped. You must not call
|
367 |
cpu_get_ticks() after that. */
|
368 |
void cpu_disable_ticks(void) |
369 |
{ |
370 |
cpu_ticks_last = cpu_get_ticks(); |
371 |
} |
372 |
|
373 |
int64_t get_clock(void)
|
374 |
{ |
375 |
struct timeval tv;
|
376 |
gettimeofday(&tv, NULL);
|
377 |
return tv.tv_sec * 1000000LL + tv.tv_usec; |
378 |
} |
379 |
|
380 |
void cpu_calibrate_ticks(void) |
381 |
{ |
382 |
int64_t usec, ticks; |
383 |
|
384 |
usec = get_clock(); |
385 |
ticks = cpu_get_ticks(); |
386 |
usleep(50 * 1000); |
387 |
usec = get_clock() - usec; |
388 |
ticks = cpu_get_ticks() - ticks; |
389 |
ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec; |
390 |
} |
391 |
|
392 |
/* compute with 96 bit intermediate result: (a*b)/c */
|
393 |
uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c) |
394 |
{ |
395 |
union {
|
396 |
uint64_t ll; |
397 |
struct {
|
398 |
#ifdef WORDS_BIGENDIAN
|
399 |
uint32_t high, low; |
400 |
#else
|
401 |
uint32_t low, high; |
402 |
#endif
|
403 |
} l; |
404 |
} u, res; |
405 |
uint64_t rl, rh; |
406 |
|
407 |
u.ll = a; |
408 |
rl = (uint64_t)u.l.low * (uint64_t)b; |
409 |
rh = (uint64_t)u.l.high * (uint64_t)b; |
410 |
rh += (rl >> 32);
|
411 |
res.l.high = rh / c; |
412 |
res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c; |
413 |
return res.ll;
|
414 |
} |
415 |
|
416 |
/***********************************************************/
|
417 |
/* serial device */
|
418 |
|
419 |
int serial_open_device(void) |
420 |
{ |
421 |
char slave_name[1024]; |
422 |
int master_fd, slave_fd;
|
423 |
|
424 |
if (serial_console == NULL && nographic) { |
425 |
/* use console for serial port */
|
426 |
return 0; |
427 |
} else {
|
428 |
if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) { |
429 |
fprintf(stderr, "warning: could not create pseudo terminal for serial port\n");
|
430 |
return -1; |
431 |
} |
432 |
fprintf(stderr, "Serial port redirected to %s\n", slave_name);
|
433 |
return master_fd;
|
434 |
} |
435 |
} |
436 |
|
437 |
/***********************************************************/
|
438 |
/* Linux network device redirector */
|
439 |
|
440 |
static int tun_open(char *ifname, int ifname_size) |
441 |
{ |
442 |
struct ifreq ifr;
|
443 |
int fd, ret;
|
444 |
|
445 |
fd = open("/dev/net/tun", O_RDWR);
|
446 |
if (fd < 0) { |
447 |
fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
|
448 |
return -1; |
449 |
} |
450 |
memset(&ifr, 0, sizeof(ifr)); |
451 |
ifr.ifr_flags = IFF_TAP | IFF_NO_PI; |
452 |
pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
|
453 |
ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
|
454 |
if (ret != 0) { |
455 |
fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
|
456 |
close(fd); |
457 |
return -1; |
458 |
} |
459 |
printf("Connected to host network interface: %s\n", ifr.ifr_name);
|
460 |
pstrcpy(ifname, ifname_size, ifr.ifr_name); |
461 |
fcntl(fd, F_SETFL, O_NONBLOCK); |
462 |
return fd;
|
463 |
} |
464 |
|
465 |
static int net_init(void) |
466 |
{ |
467 |
int pid, status, launch_script, i;
|
468 |
NetDriverState *nd; |
469 |
char *args[MAX_NICS + 2]; |
470 |
char **parg;
|
471 |
|
472 |
launch_script = 0;
|
473 |
for(i = 0; i < nb_nics; i++) { |
474 |
nd = &nd_table[i]; |
475 |
if (nd->fd < 0) { |
476 |
nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
|
477 |
if (nd->fd >= 0) |
478 |
launch_script = 1;
|
479 |
} |
480 |
} |
481 |
|
482 |
if (launch_script) {
|
483 |
/* try to launch network init script */
|
484 |
pid = fork(); |
485 |
if (pid >= 0) { |
486 |
if (pid == 0) { |
487 |
parg = args; |
488 |
*parg++ = network_script; |
489 |
for(i = 0; i < nb_nics; i++) { |
490 |
nd = &nd_table[i]; |
491 |
if (nd->fd >= 0) { |
492 |
*parg++ = nd->ifname; |
493 |
} |
494 |
} |
495 |
*parg++ = NULL;
|
496 |
execv(network_script, args); |
497 |
exit(1);
|
498 |
} |
499 |
while (waitpid(pid, &status, 0) != pid); |
500 |
if (!WIFEXITED(status) ||
|
501 |
WEXITSTATUS(status) != 0) {
|
502 |
fprintf(stderr, "%s: could not launch network script\n",
|
503 |
network_script); |
504 |
} |
505 |
} |
506 |
} |
507 |
return 0; |
508 |
} |
509 |
|
510 |
void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size) |
511 |
{ |
512 |
#ifdef DEBUG_NE2000
|
513 |
printf("NE2000: sending packet size=%d\n", size);
|
514 |
#endif
|
515 |
write(nd->fd, buf, size); |
516 |
} |
517 |
|
518 |
/***********************************************************/
|
519 |
/* dumb display */
|
520 |
|
521 |
/* init terminal so that we can grab keys */
|
522 |
static struct termios oldtty; |
523 |
|
524 |
static void term_exit(void) |
525 |
{ |
526 |
tcsetattr (0, TCSANOW, &oldtty);
|
527 |
} |
528 |
|
529 |
static void term_init(void) |
530 |
{ |
531 |
struct termios tty;
|
532 |
|
533 |
tcgetattr (0, &tty);
|
534 |
oldtty = tty; |
535 |
|
536 |
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
537 |
|INLCR|IGNCR|ICRNL|IXON); |
538 |
tty.c_oflag |= OPOST; |
539 |
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
540 |
/* if graphical mode, we allow Ctrl-C handling */
|
541 |
if (nographic)
|
542 |
tty.c_lflag &= ~ISIG; |
543 |
tty.c_cflag &= ~(CSIZE|PARENB); |
544 |
tty.c_cflag |= CS8; |
545 |
tty.c_cc[VMIN] = 1;
|
546 |
tty.c_cc[VTIME] = 0;
|
547 |
|
548 |
tcsetattr (0, TCSANOW, &tty);
|
549 |
|
550 |
atexit(term_exit); |
551 |
|
552 |
fcntl(0, F_SETFL, O_NONBLOCK);
|
553 |
} |
554 |
|
555 |
static void dumb_update(DisplayState *ds, int x, int y, int w, int h) |
556 |
{ |
557 |
} |
558 |
|
559 |
static void dumb_resize(DisplayState *ds, int w, int h) |
560 |
{ |
561 |
} |
562 |
|
563 |
static void dumb_refresh(DisplayState *ds) |
564 |
{ |
565 |
vga_update_display(); |
566 |
} |
567 |
|
568 |
void dumb_display_init(DisplayState *ds)
|
569 |
{ |
570 |
ds->data = NULL;
|
571 |
ds->linesize = 0;
|
572 |
ds->depth = 0;
|
573 |
ds->dpy_update = dumb_update; |
574 |
ds->dpy_resize = dumb_resize; |
575 |
ds->dpy_refresh = dumb_refresh; |
576 |
} |
577 |
|
578 |
#if !defined(CONFIG_SOFTMMU)
|
579 |
/***********************************************************/
|
580 |
/* cpu signal handler */
|
581 |
static void host_segv_handler(int host_signum, siginfo_t *info, |
582 |
void *puc)
|
583 |
{ |
584 |
if (cpu_signal_handler(host_signum, info, puc))
|
585 |
return;
|
586 |
term_exit(); |
587 |
abort(); |
588 |
} |
589 |
#endif
|
590 |
|
591 |
static int timer_irq_pending; |
592 |
static int timer_irq_count; |
593 |
|
594 |
static int timer_ms; |
595 |
static int gui_refresh_pending, gui_refresh_count; |
596 |
|
597 |
static void host_alarm_handler(int host_signum, siginfo_t *info, |
598 |
void *puc)
|
599 |
{ |
600 |
/* NOTE: since usually the OS asks a 100 Hz clock, there can be
|
601 |
some drift between cpu_get_ticks() and the interrupt time. So
|
602 |
we queue some interrupts to avoid missing some */
|
603 |
timer_irq_count += pit_get_out_edges(&pit_channels[0]);
|
604 |
if (timer_irq_count) {
|
605 |
if (timer_irq_count > 2) |
606 |
timer_irq_count = 2;
|
607 |
timer_irq_count--; |
608 |
timer_irq_pending = 1;
|
609 |
} |
610 |
gui_refresh_count += timer_ms; |
611 |
if (gui_refresh_count >= GUI_REFRESH_INTERVAL) {
|
612 |
gui_refresh_count = 0;
|
613 |
gui_refresh_pending = 1;
|
614 |
} |
615 |
|
616 |
if (gui_refresh_pending || timer_irq_pending) {
|
617 |
/* just exit from the cpu to have a chance to handle timers */
|
618 |
cpu_interrupt(global_env, CPU_INTERRUPT_EXIT); |
619 |
} |
620 |
} |
621 |
|
622 |
#define MAX_IO_HANDLERS 64 |
623 |
|
624 |
typedef struct IOHandlerRecord { |
625 |
int fd;
|
626 |
IOCanRWHandler *fd_can_read; |
627 |
IOReadHandler *fd_read; |
628 |
void *opaque;
|
629 |
/* temporary data */
|
630 |
struct pollfd *ufd;
|
631 |
int max_size;
|
632 |
} IOHandlerRecord; |
633 |
|
634 |
static IOHandlerRecord io_handlers[MAX_IO_HANDLERS];
|
635 |
static int nb_io_handlers = 0; |
636 |
|
637 |
int add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, |
638 |
IOReadHandler *fd_read, void *opaque)
|
639 |
{ |
640 |
IOHandlerRecord *ioh; |
641 |
|
642 |
if (nb_io_handlers >= MAX_IO_HANDLERS)
|
643 |
return -1; |
644 |
ioh = &io_handlers[nb_io_handlers]; |
645 |
ioh->fd = fd; |
646 |
ioh->fd_can_read = fd_can_read; |
647 |
ioh->fd_read = fd_read; |
648 |
ioh->opaque = opaque; |
649 |
nb_io_handlers++; |
650 |
return 0; |
651 |
} |
652 |
|
653 |
/* main execution loop */
|
654 |
|
655 |
CPUState *cpu_gdbstub_get_env(void *opaque)
|
656 |
{ |
657 |
return global_env;
|
658 |
} |
659 |
|
660 |
int main_loop(void *opaque) |
661 |
{ |
662 |
struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf, *gdb_ufd; |
663 |
int ret, n, timeout, serial_ok, max_size, i;
|
664 |
uint8_t buf[4096];
|
665 |
IOHandlerRecord *ioh; |
666 |
CPUState *env = global_env; |
667 |
|
668 |
if (!term_inited) {
|
669 |
/* initialize terminal only there so that the user has a
|
670 |
chance to stop QEMU with Ctrl-C before the gdb connection
|
671 |
is launched */
|
672 |
term_inited = 1;
|
673 |
term_init(); |
674 |
} |
675 |
|
676 |
serial_ok = 1;
|
677 |
cpu_enable_ticks(); |
678 |
for(;;) {
|
679 |
#if defined (DO_TB_FLUSH)
|
680 |
tb_flush(); |
681 |
#endif
|
682 |
ret = cpu_exec(env); |
683 |
if (reset_requested) {
|
684 |
ret = EXCP_INTERRUPT; |
685 |
break;
|
686 |
} |
687 |
if (ret == EXCP_DEBUG) {
|
688 |
ret = EXCP_DEBUG; |
689 |
break;
|
690 |
} |
691 |
/* if hlt instruction, we wait until the next IRQ */
|
692 |
if (ret == EXCP_HLT)
|
693 |
timeout = 10;
|
694 |
else
|
695 |
timeout = 0;
|
696 |
|
697 |
/* poll any events */
|
698 |
pf = ufds; |
699 |
ioh = io_handlers; |
700 |
for(i = 0; i < nb_io_handlers; i++) { |
701 |
max_size = ioh->fd_can_read(ioh->opaque); |
702 |
if (max_size > 0) { |
703 |
if (max_size > sizeof(buf)) |
704 |
max_size = sizeof(buf);
|
705 |
pf->fd = ioh->fd; |
706 |
pf->events = POLLIN; |
707 |
ioh->ufd = pf; |
708 |
pf++; |
709 |
} else {
|
710 |
ioh->ufd = NULL;
|
711 |
} |
712 |
ioh->max_size = max_size; |
713 |
ioh++; |
714 |
} |
715 |
|
716 |
gdb_ufd = NULL;
|
717 |
if (gdbstub_fd > 0) { |
718 |
gdb_ufd = pf; |
719 |
pf->fd = gdbstub_fd; |
720 |
pf->events = POLLIN; |
721 |
pf++; |
722 |
} |
723 |
|
724 |
ret = poll(ufds, pf - ufds, timeout); |
725 |
if (ret > 0) { |
726 |
ioh = io_handlers; |
727 |
for(i = 0; i < nb_io_handlers; i++) { |
728 |
pf = ioh->ufd; |
729 |
if (pf) {
|
730 |
n = read(ioh->fd, buf, ioh->max_size); |
731 |
if (n > 0) { |
732 |
ioh->fd_read(ioh->opaque, buf, n); |
733 |
} |
734 |
} |
735 |
ioh++; |
736 |
} |
737 |
if (gdb_ufd && (gdb_ufd->revents & POLLIN)) {
|
738 |
uint8_t buf[1];
|
739 |
/* stop emulation if requested by gdb */
|
740 |
n = read(gdbstub_fd, buf, 1);
|
741 |
if (n == 1) { |
742 |
ret = EXCP_INTERRUPT; |
743 |
break;
|
744 |
} |
745 |
} |
746 |
} |
747 |
|
748 |
/* timer IRQ */
|
749 |
if (timer_irq_pending) {
|
750 |
#if defined (TARGET_I386)
|
751 |
pic_set_irq(0, 1); |
752 |
pic_set_irq(0, 0); |
753 |
timer_irq_pending = 0;
|
754 |
rtc_timer(); |
755 |
#endif
|
756 |
} |
757 |
/* XXX: add explicit timer */
|
758 |
SB16_run(); |
759 |
|
760 |
/* run dma transfers, if any */
|
761 |
DMA_run(); |
762 |
|
763 |
/* VGA */
|
764 |
if (gui_refresh_pending) {
|
765 |
display_state.dpy_refresh(&display_state); |
766 |
gui_refresh_pending = 0;
|
767 |
} |
768 |
} |
769 |
cpu_disable_ticks(); |
770 |
return ret;
|
771 |
} |
772 |
|
773 |
void help(void) |
774 |
{ |
775 |
printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" |
776 |
"usage: %s [options] [disk_image]\n"
|
777 |
"\n"
|
778 |
"'disk_image' is a raw hard image image for IDE hard disk 0\n"
|
779 |
"\n"
|
780 |
"Standard options:\n"
|
781 |
"-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
|
782 |
"-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
|
783 |
"-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
|
784 |
"-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
|
785 |
"-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
|
786 |
"-snapshot write to temporary files instead of disk image files\n"
|
787 |
"-m megs set virtual RAM size to megs MB\n"
|
788 |
"-nographic disable graphical output and redirect serial I/Os to console\n"
|
789 |
"\n"
|
790 |
"Network options:\n"
|
791 |
"-n script set network init script [default=%s]\n"
|
792 |
"-nics n simulate 'n' network interfaces [default=1]\n"
|
793 |
"-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n"
|
794 |
"\n"
|
795 |
"Linux boot specific:\n"
|
796 |
"-kernel bzImage use 'bzImage' as kernel image\n"
|
797 |
"-append cmdline use 'cmdline' as kernel command line\n"
|
798 |
"-initrd file use 'file' as initial ram disk\n"
|
799 |
"\n"
|
800 |
"Debug/Expert options:\n"
|
801 |
"-s wait gdb connection to port %d\n"
|
802 |
"-p port change gdb connection port\n"
|
803 |
"-d item1,... output log to %s (use -d ? for a list of log items)\n"
|
804 |
"-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
|
805 |
"-L path set the directory for the BIOS and VGA BIOS\n"
|
806 |
#ifdef USE_CODE_COPY
|
807 |
"-no-code-copy disable code copy acceleration\n"
|
808 |
#endif
|
809 |
|
810 |
"\n"
|
811 |
"During emulation, use C-a h to get terminal commands:\n",
|
812 |
#ifdef CONFIG_SOFTMMU
|
813 |
"qemu",
|
814 |
#else
|
815 |
"qemu-fast",
|
816 |
#endif
|
817 |
DEFAULT_NETWORK_SCRIPT, |
818 |
DEFAULT_GDBSTUB_PORT, |
819 |
"/tmp/qemu.log");
|
820 |
term_print_help(); |
821 |
#ifndef CONFIG_SOFTMMU
|
822 |
printf("\n"
|
823 |
"NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
|
824 |
"work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
|
825 |
"PC emulation.\n");
|
826 |
#endif
|
827 |
exit(1);
|
828 |
} |
829 |
|
830 |
struct option long_options[] = {
|
831 |
{ "initrd", 1, NULL, 0, }, |
832 |
{ "hda", 1, NULL, 0, }, |
833 |
{ "hdb", 1, NULL, 0, }, |
834 |
{ "snapshot", 0, NULL, 0, }, |
835 |
{ "hdachs", 1, NULL, 0, }, |
836 |
{ "nographic", 0, NULL, 0, }, |
837 |
{ "kernel", 1, NULL, 0, }, |
838 |
{ "append", 1, NULL, 0, }, |
839 |
{ "tun-fd", 1, NULL, 0, }, |
840 |
{ "hdc", 1, NULL, 0, }, |
841 |
{ "hdd", 1, NULL, 0, }, |
842 |
{ "cdrom", 1, NULL, 0, }, |
843 |
{ "boot", 1, NULL, 0, }, |
844 |
{ "fda", 1, NULL, 0, }, |
845 |
{ "fdb", 1, NULL, 0, }, |
846 |
{ "no-code-copy", 0, NULL, 0 }, |
847 |
{ "nics", 1, NULL, 0 }, |
848 |
{ NULL, 0, NULL, 0 }, |
849 |
}; |
850 |
|
851 |
#ifdef CONFIG_SDL
|
852 |
/* SDL use the pthreads and they modify sigaction. We don't
|
853 |
want that. */
|
854 |
#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) |
855 |
extern void __libc_sigaction(); |
856 |
#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
|
857 |
#else
|
858 |
extern void __sigaction(); |
859 |
#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
|
860 |
#endif
|
861 |
#endif /* CONFIG_SDL */ |
862 |
|
863 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
864 |
|
865 |
/* this stack is only used during signal handling */
|
866 |
#define SIGNAL_STACK_SIZE 32768 |
867 |
|
868 |
static uint8_t *signal_stack;
|
869 |
|
870 |
#endif
|
871 |
|
872 |
int main(int argc, char **argv) |
873 |
{ |
874 |
int c, i, use_gdbstub, gdbstub_port, long_index, has_cdrom;
|
875 |
int snapshot, linux_boot;
|
876 |
struct sigaction act;
|
877 |
struct itimerval itv;
|
878 |
CPUState *env; |
879 |
const char *initrd_filename; |
880 |
const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD]; |
881 |
const char *kernel_filename, *kernel_cmdline; |
882 |
DisplayState *ds = &display_state; |
883 |
int cyls, heads, secs;
|
884 |
|
885 |
/* we never want that malloc() uses mmap() */
|
886 |
mallopt(M_MMAP_THRESHOLD, 4096 * 1024); |
887 |
initrd_filename = NULL;
|
888 |
for(i = 0; i < MAX_FD; i++) |
889 |
fd_filename[i] = NULL;
|
890 |
for(i = 0; i < MAX_DISKS; i++) |
891 |
hd_filename[i] = NULL;
|
892 |
ram_size = 32 * 1024 * 1024; |
893 |
vga_ram_size = VGA_RAM_SIZE; |
894 |
pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
|
895 |
use_gdbstub = 0;
|
896 |
gdbstub_port = DEFAULT_GDBSTUB_PORT; |
897 |
snapshot = 0;
|
898 |
nographic = 0;
|
899 |
kernel_filename = NULL;
|
900 |
kernel_cmdline = "";
|
901 |
has_cdrom = 1;
|
902 |
cyls = heads = secs = 0;
|
903 |
|
904 |
nb_nics = 1;
|
905 |
for(i = 0; i < MAX_NICS; i++) { |
906 |
NetDriverState *nd = &nd_table[i]; |
907 |
nd->fd = -1;
|
908 |
/* init virtual mac address */
|
909 |
nd->macaddr[0] = 0x52; |
910 |
nd->macaddr[1] = 0x54; |
911 |
nd->macaddr[2] = 0x00; |
912 |
nd->macaddr[3] = 0x12; |
913 |
nd->macaddr[4] = 0x34; |
914 |
nd->macaddr[5] = 0x56 + i; |
915 |
} |
916 |
|
917 |
for(;;) {
|
918 |
c = getopt_long_only(argc, argv, "hm:d:n:sp:L:", long_options, &long_index);
|
919 |
if (c == -1) |
920 |
break;
|
921 |
switch(c) {
|
922 |
case 0: |
923 |
switch(long_index) {
|
924 |
case 0: |
925 |
initrd_filename = optarg; |
926 |
break;
|
927 |
case 1: |
928 |
hd_filename[0] = optarg;
|
929 |
break;
|
930 |
case 2: |
931 |
hd_filename[1] = optarg;
|
932 |
break;
|
933 |
case 3: |
934 |
snapshot = 1;
|
935 |
break;
|
936 |
case 4: |
937 |
{ |
938 |
const char *p; |
939 |
p = optarg; |
940 |
cyls = strtol(p, (char **)&p, 0); |
941 |
if (*p != ',') |
942 |
goto chs_fail;
|
943 |
p++; |
944 |
heads = strtol(p, (char **)&p, 0); |
945 |
if (*p != ',') |
946 |
goto chs_fail;
|
947 |
p++; |
948 |
secs = strtol(p, (char **)&p, 0); |
949 |
if (*p != '\0') { |
950 |
chs_fail:
|
951 |
cyls = 0;
|
952 |
} |
953 |
} |
954 |
break;
|
955 |
case 5: |
956 |
nographic = 1;
|
957 |
break;
|
958 |
case 6: |
959 |
kernel_filename = optarg; |
960 |
break;
|
961 |
case 7: |
962 |
kernel_cmdline = optarg; |
963 |
break;
|
964 |
case 8: |
965 |
{ |
966 |
const char *p; |
967 |
int fd;
|
968 |
p = optarg; |
969 |
nb_nics = 0;
|
970 |
for(;;) {
|
971 |
fd = strtol(p, (char **)&p, 0); |
972 |
nd_table[nb_nics].fd = fd; |
973 |
snprintf(nd_table[nb_nics].ifname, |
974 |
sizeof(nd_table[nb_nics].ifname),
|
975 |
"fd%d", nb_nics);
|
976 |
nb_nics++; |
977 |
if (*p == ',') { |
978 |
p++; |
979 |
} else if (*p != '\0') { |
980 |
fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics);
|
981 |
exit(1);
|
982 |
} else {
|
983 |
break;
|
984 |
} |
985 |
} |
986 |
} |
987 |
break;
|
988 |
case 9: |
989 |
hd_filename[2] = optarg;
|
990 |
has_cdrom = 0;
|
991 |
break;
|
992 |
case 10: |
993 |
hd_filename[3] = optarg;
|
994 |
break;
|
995 |
case 11: |
996 |
hd_filename[2] = optarg;
|
997 |
has_cdrom = 1;
|
998 |
break;
|
999 |
case 12: |
1000 |
boot_device = optarg[0];
|
1001 |
if (boot_device != 'a' && boot_device != 'b' && |
1002 |
boot_device != 'c' && boot_device != 'd') { |
1003 |
fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
|
1004 |
exit(1);
|
1005 |
} |
1006 |
break;
|
1007 |
case 13: |
1008 |
fd_filename[0] = optarg;
|
1009 |
break;
|
1010 |
case 14: |
1011 |
fd_filename[1] = optarg;
|
1012 |
break;
|
1013 |
case 15: |
1014 |
code_copy_enabled = 0;
|
1015 |
break;
|
1016 |
case 16: |
1017 |
nb_nics = atoi(optarg); |
1018 |
if (nb_nics < 1 || nb_nics > MAX_NICS) { |
1019 |
fprintf(stderr, "qemu: invalid number of network interfaces\n");
|
1020 |
exit(1);
|
1021 |
} |
1022 |
break;
|
1023 |
} |
1024 |
break;
|
1025 |
case 'h': |
1026 |
help(); |
1027 |
break;
|
1028 |
case 'm': |
1029 |
ram_size = atoi(optarg) * 1024 * 1024; |
1030 |
if (ram_size <= 0) |
1031 |
help(); |
1032 |
if (ram_size > PHYS_RAM_MAX_SIZE) {
|
1033 |
fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
|
1034 |
PHYS_RAM_MAX_SIZE / (1024 * 1024)); |
1035 |
exit(1);
|
1036 |
} |
1037 |
break;
|
1038 |
case 'd': |
1039 |
{ |
1040 |
int mask;
|
1041 |
CPULogItem *item; |
1042 |
|
1043 |
mask = cpu_str_to_log_mask(optarg); |
1044 |
if (!mask) {
|
1045 |
printf("Log items (comma separated):\n");
|
1046 |
for(item = cpu_log_items; item->mask != 0; item++) { |
1047 |
printf("%-10s %s\n", item->name, item->help);
|
1048 |
} |
1049 |
exit(1);
|
1050 |
} |
1051 |
cpu_set_log(mask); |
1052 |
} |
1053 |
break;
|
1054 |
case 'n': |
1055 |
pstrcpy(network_script, sizeof(network_script), optarg);
|
1056 |
break;
|
1057 |
case 's': |
1058 |
use_gdbstub = 1;
|
1059 |
break;
|
1060 |
case 'p': |
1061 |
gdbstub_port = atoi(optarg); |
1062 |
break;
|
1063 |
case 'L': |
1064 |
bios_dir = optarg; |
1065 |
break;
|
1066 |
} |
1067 |
} |
1068 |
|
1069 |
if (optind < argc) {
|
1070 |
hd_filename[0] = argv[optind++];
|
1071 |
} |
1072 |
|
1073 |
linux_boot = (kernel_filename != NULL);
|
1074 |
|
1075 |
if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' && |
1076 |
fd_filename[0] == '\0') |
1077 |
help(); |
1078 |
|
1079 |
/* boot to cd by default if no hard disk */
|
1080 |
if (hd_filename[0] == '\0' && boot_device == 'c') { |
1081 |
if (fd_filename[0] != '\0') |
1082 |
boot_device = 'a';
|
1083 |
else
|
1084 |
boot_device = 'd';
|
1085 |
} |
1086 |
|
1087 |
#if !defined(CONFIG_SOFTMMU)
|
1088 |
/* must avoid mmap() usage of glibc by setting a buffer "by hand" */
|
1089 |
{ |
1090 |
static uint8_t stdout_buf[4096]; |
1091 |
setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
|
1092 |
} |
1093 |
#else
|
1094 |
setvbuf(stdout, NULL, _IOLBF, 0); |
1095 |
#endif
|
1096 |
|
1097 |
/* init host network redirectors */
|
1098 |
net_init(); |
1099 |
|
1100 |
/* init the memory */
|
1101 |
phys_ram_size = ram_size + vga_ram_size; |
1102 |
|
1103 |
#ifdef CONFIG_SOFTMMU
|
1104 |
phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size); |
1105 |
if (!phys_ram_base) {
|
1106 |
fprintf(stderr, "Could not allocate physical memory\n");
|
1107 |
exit(1);
|
1108 |
} |
1109 |
#else
|
1110 |
/* as we must map the same page at several addresses, we must use
|
1111 |
a fd */
|
1112 |
{ |
1113 |
const char *tmpdir; |
1114 |
|
1115 |
tmpdir = getenv("QEMU_TMPDIR");
|
1116 |
if (!tmpdir)
|
1117 |
tmpdir = "/tmp";
|
1118 |
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir); |
1119 |
if (mkstemp(phys_ram_file) < 0) { |
1120 |
fprintf(stderr, "Could not create temporary memory file '%s'\n",
|
1121 |
phys_ram_file); |
1122 |
exit(1);
|
1123 |
} |
1124 |
phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
|
1125 |
if (phys_ram_fd < 0) { |
1126 |
fprintf(stderr, "Could not open temporary memory file '%s'\n",
|
1127 |
phys_ram_file); |
1128 |
exit(1);
|
1129 |
} |
1130 |
ftruncate(phys_ram_fd, phys_ram_size); |
1131 |
unlink(phys_ram_file); |
1132 |
phys_ram_base = mmap(get_mmap_addr(phys_ram_size), |
1133 |
phys_ram_size, |
1134 |
PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED, |
1135 |
phys_ram_fd, 0);
|
1136 |
if (phys_ram_base == MAP_FAILED) {
|
1137 |
fprintf(stderr, "Could not map physical memory\n");
|
1138 |
exit(1);
|
1139 |
} |
1140 |
} |
1141 |
#endif
|
1142 |
|
1143 |
/* we always create the cdrom drive, even if no disk is there */
|
1144 |
if (has_cdrom) {
|
1145 |
bs_table[2] = bdrv_new("cdrom"); |
1146 |
bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
|
1147 |
} |
1148 |
|
1149 |
/* open the virtual block devices */
|
1150 |
for(i = 0; i < MAX_DISKS; i++) { |
1151 |
if (hd_filename[i]) {
|
1152 |
if (!bs_table[i]) {
|
1153 |
char buf[64]; |
1154 |
snprintf(buf, sizeof(buf), "hd%c", i + 'a'); |
1155 |
bs_table[i] = bdrv_new(buf); |
1156 |
} |
1157 |
if (bdrv_open(bs_table[i], hd_filename[i], snapshot) < 0) { |
1158 |
fprintf(stderr, "qemu: could not open hard disk image '%s\n",
|
1159 |
hd_filename[i]); |
1160 |
exit(1);
|
1161 |
} |
1162 |
if (i == 0 && cyls != 0) |
1163 |
bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs); |
1164 |
} |
1165 |
} |
1166 |
|
1167 |
/* we always create at least one floppy disk */
|
1168 |
fd_table[0] = bdrv_new("fda"); |
1169 |
bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY);
|
1170 |
|
1171 |
for(i = 0; i < MAX_FD; i++) { |
1172 |
if (fd_filename[i]) {
|
1173 |
if (!fd_table[i]) {
|
1174 |
char buf[64]; |
1175 |
snprintf(buf, sizeof(buf), "fd%c", i + 'a'); |
1176 |
fd_table[i] = bdrv_new(buf); |
1177 |
bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY); |
1178 |
} |
1179 |
if (fd_filename[i] != '\0') { |
1180 |
if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) { |
1181 |
fprintf(stderr, "qemu: could not open floppy disk image '%s\n",
|
1182 |
fd_filename[i]); |
1183 |
exit(1);
|
1184 |
} |
1185 |
} |
1186 |
} |
1187 |
} |
1188 |
|
1189 |
/* init CPU state */
|
1190 |
env = cpu_init(); |
1191 |
global_env = env; |
1192 |
cpu_single_env = env; |
1193 |
|
1194 |
init_ioports(); |
1195 |
cpu_calibrate_ticks(); |
1196 |
|
1197 |
/* terminal init */
|
1198 |
if (nographic) {
|
1199 |
dumb_display_init(ds); |
1200 |
} else {
|
1201 |
#ifdef CONFIG_SDL
|
1202 |
sdl_display_init(ds); |
1203 |
#else
|
1204 |
dumb_display_init(ds); |
1205 |
#endif
|
1206 |
} |
1207 |
|
1208 |
#if defined(TARGET_I386)
|
1209 |
pc_init(ram_size, vga_ram_size, boot_device, |
1210 |
ds, fd_filename, snapshot, |
1211 |
kernel_filename, kernel_cmdline, initrd_filename); |
1212 |
#elif defined(TARGET_PPC)
|
1213 |
ppc_init(); |
1214 |
#endif
|
1215 |
|
1216 |
/* launched after the device init so that it can display or not a
|
1217 |
banner */
|
1218 |
monitor_init(); |
1219 |
|
1220 |
/* setup cpu signal handlers for MMU / self modifying code handling */
|
1221 |
#if !defined(CONFIG_SOFTMMU)
|
1222 |
|
1223 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1224 |
{ |
1225 |
stack_t stk; |
1226 |
signal_stack = malloc(SIGNAL_STACK_SIZE); |
1227 |
stk.ss_sp = signal_stack; |
1228 |
stk.ss_size = SIGNAL_STACK_SIZE; |
1229 |
stk.ss_flags = 0;
|
1230 |
|
1231 |
if (sigaltstack(&stk, NULL) < 0) { |
1232 |
perror("sigaltstack");
|
1233 |
exit(1);
|
1234 |
} |
1235 |
} |
1236 |
#endif
|
1237 |
|
1238 |
sigfillset(&act.sa_mask); |
1239 |
act.sa_flags = SA_SIGINFO; |
1240 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1241 |
act.sa_flags |= SA_ONSTACK; |
1242 |
#endif
|
1243 |
act.sa_sigaction = host_segv_handler; |
1244 |
sigaction(SIGSEGV, &act, NULL);
|
1245 |
sigaction(SIGBUS, &act, NULL);
|
1246 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1247 |
sigaction(SIGFPE, &act, NULL);
|
1248 |
#endif
|
1249 |
#endif
|
1250 |
|
1251 |
/* timer signal */
|
1252 |
sigfillset(&act.sa_mask); |
1253 |
act.sa_flags = SA_SIGINFO; |
1254 |
#if defined (TARGET_I386) && defined(USE_CODE_COPY)
|
1255 |
act.sa_flags |= SA_ONSTACK; |
1256 |
#endif
|
1257 |
act.sa_sigaction = host_alarm_handler; |
1258 |
sigaction(SIGALRM, &act, NULL);
|
1259 |
|
1260 |
itv.it_interval.tv_sec = 0;
|
1261 |
itv.it_interval.tv_usec = 1000;
|
1262 |
itv.it_value.tv_sec = 0;
|
1263 |
itv.it_value.tv_usec = 10 * 1000; |
1264 |
setitimer(ITIMER_REAL, &itv, NULL);
|
1265 |
/* we probe the tick duration of the kernel to inform the user if
|
1266 |
the emulated kernel requested a too high timer frequency */
|
1267 |
getitimer(ITIMER_REAL, &itv); |
1268 |
timer_ms = itv.it_interval.tv_usec / 1000;
|
1269 |
pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) / |
1270 |
1000000;
|
1271 |
|
1272 |
if (use_gdbstub) {
|
1273 |
cpu_gdbstub(NULL, main_loop, gdbstub_port);
|
1274 |
} else {
|
1275 |
main_loop(NULL);
|
1276 |
} |
1277 |
return 0; |
1278 |
} |