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avoid rounding problems
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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 "vl.h"
25
26 #include <getopt.h>
27 #include <unistd.h>
28 #include <fcntl.h>
29 #include <signal.h>
30 #include <time.h>
31 #include <malloc.h>
32 #include <errno.h>
33 #include <sys/time.h>
34
35 #ifndef _WIN32
36 #include <sys/times.h>
37 #include <sys/wait.h>
38 #include <pty.h>
39 #include <termios.h>
40 #include <sys/poll.h>
41 #include <sys/mman.h>
42 #include <sys/ioctl.h>
43 #include <sys/socket.h>
44 #include <linux/if.h>
45 #include <linux/if_tun.h>
46 #endif
47
48 #ifdef _WIN32
49 #include <sys/timeb.h>
50 #include <windows.h>
51 #define getopt_long_only getopt_long
52 #define memalign(align, size) malloc(size)
53 #endif
54
55
56 #include "disas.h"
57
58 #include "exec-all.h"
59
60 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
61
62 //#define DEBUG_UNUSED_IOPORT
63
64 #if !defined(CONFIG_SOFTMMU)
65 #define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
66 #else
67 #define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
68 #endif
69
70 /* in ms */
71 #define GUI_REFRESH_INTERVAL 30
72
73 /* XXX: use a two level table to limit memory usage */
74 #define MAX_IOPORTS 65536
75
76 const char *bios_dir = CONFIG_QEMU_SHAREDIR;
77 char phys_ram_file[1024];
78 CPUState *global_env;
79 CPUState *cpu_single_env;
80 void *ioport_opaque[MAX_IOPORTS];
81 IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
82 IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
83 BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
84 int vga_ram_size;
85 static DisplayState display_state;
86 int nographic;
87 int64_t ticks_per_sec;
88 int boot_device = 'c';
89 static int ram_size;
90 static char network_script[1024];
91 int pit_min_timer_count = 0;
92 int nb_nics;
93 NetDriverState nd_table[MAX_NICS];
94 SerialState *serial_console;
95 QEMUTimer *gui_timer;
96 int vm_running;
97
98 /***********************************************************/
99 /* x86 io ports */
100
101 uint32_t default_ioport_readb(void *opaque, uint32_t address)
102 {
103 #ifdef DEBUG_UNUSED_IOPORT
104 fprintf(stderr, "inb: port=0x%04x\n", address);
105 #endif
106 return 0xff;
107 }
108
109 void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
110 {
111 #ifdef DEBUG_UNUSED_IOPORT
112 fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
113 #endif
114 }
115
116 /* default is to make two byte accesses */
117 uint32_t default_ioport_readw(void *opaque, uint32_t address)
118 {
119 uint32_t data;
120 data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address);
121 data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8;
122 return data;
123 }
124
125 void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
126 {
127 ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff);
128 ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff);
129 }
130
131 uint32_t default_ioport_readl(void *opaque, uint32_t address)
132 {
133 #ifdef DEBUG_UNUSED_IOPORT
134 fprintf(stderr, "inl: port=0x%04x\n", address);
135 #endif
136 return 0xffffffff;
137 }
138
139 void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
140 {
141 #ifdef DEBUG_UNUSED_IOPORT
142 fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
143 #endif
144 }
145
146 void init_ioports(void)
147 {
148 int i;
149
150 for(i = 0; i < MAX_IOPORTS; i++) {
151 ioport_read_table[0][i] = default_ioport_readb;
152 ioport_write_table[0][i] = default_ioport_writeb;
153 ioport_read_table[1][i] = default_ioport_readw;
154 ioport_write_table[1][i] = default_ioport_writew;
155 ioport_read_table[2][i] = default_ioport_readl;
156 ioport_write_table[2][i] = default_ioport_writel;
157 }
158 }
159
160 /* size is the word size in byte */
161 int register_ioport_read(int start, int length, int size,
162 IOPortReadFunc *func, void *opaque)
163 {
164 int i, bsize;
165
166 if (size == 1) {
167 bsize = 0;
168 } else if (size == 2) {
169 bsize = 1;
170 } else if (size == 4) {
171 bsize = 2;
172 } else {
173 hw_error("register_ioport_read: invalid size");
174 return -1;
175 }
176 for(i = start; i < start + length; i += size) {
177 ioport_read_table[bsize][i] = func;
178 if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
179 hw_error("register_ioport_read: invalid opaque");
180 ioport_opaque[i] = opaque;
181 }
182 return 0;
183 }
184
185 /* size is the word size in byte */
186 int register_ioport_write(int start, int length, int size,
187 IOPortWriteFunc *func, void *opaque)
188 {
189 int i, bsize;
190
191 if (size == 1) {
192 bsize = 0;
193 } else if (size == 2) {
194 bsize = 1;
195 } else if (size == 4) {
196 bsize = 2;
197 } else {
198 hw_error("register_ioport_write: invalid size");
199 return -1;
200 }
201 for(i = start; i < start + length; i += size) {
202 ioport_write_table[bsize][i] = func;
203 if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
204 hw_error("register_ioport_read: invalid opaque");
205 ioport_opaque[i] = opaque;
206 }
207 return 0;
208 }
209
210 void pstrcpy(char *buf, int buf_size, const char *str)
211 {
212 int c;
213 char *q = buf;
214
215 if (buf_size <= 0)
216 return;
217
218 for(;;) {
219 c = *str++;
220 if (c == 0 || q >= buf + buf_size - 1)
221 break;
222 *q++ = c;
223 }
224 *q = '\0';
225 }
226
227 /* strcat and truncate. */
228 char *pstrcat(char *buf, int buf_size, const char *s)
229 {
230 int len;
231 len = strlen(buf);
232 if (len < buf_size)
233 pstrcpy(buf + len, buf_size - len, s);
234 return buf;
235 }
236
237 /* return the size or -1 if error */
238 int load_image(const char *filename, uint8_t *addr)
239 {
240 int fd, size;
241 fd = open(filename, O_RDONLY);
242 if (fd < 0)
243 return -1;
244 size = lseek(fd, 0, SEEK_END);
245 lseek(fd, 0, SEEK_SET);
246 if (read(fd, addr, size) != size) {
247 close(fd);
248 return -1;
249 }
250 close(fd);
251 return size;
252 }
253
254 void cpu_outb(CPUState *env, int addr, int val)
255 {
256 addr &= (MAX_IOPORTS - 1);
257 ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
258 }
259
260 void cpu_outw(CPUState *env, int addr, int val)
261 {
262 addr &= (MAX_IOPORTS - 1);
263 ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
264 }
265
266 void cpu_outl(CPUState *env, int addr, int val)
267 {
268 addr &= (MAX_IOPORTS - 1);
269 ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
270 }
271
272 int cpu_inb(CPUState *env, int addr)
273 {
274 addr &= (MAX_IOPORTS - 1);
275 return ioport_read_table[0][addr](ioport_opaque[addr], addr);
276 }
277
278 int cpu_inw(CPUState *env, int addr)
279 {
280 addr &= (MAX_IOPORTS - 1);
281 return ioport_read_table[1][addr](ioport_opaque[addr], addr);
282 }
283
284 int cpu_inl(CPUState *env, int addr)
285 {
286 addr &= (MAX_IOPORTS - 1);
287 return ioport_read_table[2][addr](ioport_opaque[addr], addr);
288 }
289
290 /***********************************************************/
291 void hw_error(const char *fmt, ...)
292 {
293 va_list ap;
294
295 va_start(ap, fmt);
296 fprintf(stderr, "qemu: hardware error: ");
297 vfprintf(stderr, fmt, ap);
298 fprintf(stderr, "\n");
299 #ifdef TARGET_I386
300 cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
301 #else
302 cpu_dump_state(global_env, stderr, 0);
303 #endif
304 va_end(ap);
305 abort();
306 }
307
308 /***********************************************************/
309 /* timers */
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 volatile ("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 int cpu_ticks_enabled;
354
355 static inline int64_t cpu_get_ticks(void)
356 {
357 if (!cpu_ticks_enabled) {
358 return cpu_ticks_offset;
359 } else {
360 return cpu_get_real_ticks() + cpu_ticks_offset;
361 }
362 }
363
364 /* enable cpu_get_ticks() */
365 void cpu_enable_ticks(void)
366 {
367 if (!cpu_ticks_enabled) {
368 cpu_ticks_offset -= cpu_get_real_ticks();
369 cpu_ticks_enabled = 1;
370 }
371 }
372
373 /* disable cpu_get_ticks() : the clock is stopped. You must not call
374 cpu_get_ticks() after that. */
375 void cpu_disable_ticks(void)
376 {
377 if (cpu_ticks_enabled) {
378 cpu_ticks_offset = cpu_get_ticks();
379 cpu_ticks_enabled = 0;
380 }
381 }
382
383 static int64_t get_clock(void)
384 {
385 #ifdef _WIN32
386 struct _timeb tb;
387 _ftime(&tb);
388 return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
389 #else
390 struct timeval tv;
391 gettimeofday(&tv, NULL);
392 return tv.tv_sec * 1000000LL + tv.tv_usec;
393 #endif
394 }
395
396 void cpu_calibrate_ticks(void)
397 {
398 int64_t usec, ticks;
399
400 usec = get_clock();
401 ticks = cpu_get_real_ticks();
402 #ifdef _WIN32
403 Sleep(50);
404 #else
405 usleep(50 * 1000);
406 #endif
407 usec = get_clock() - usec;
408 ticks = cpu_get_real_ticks() - ticks;
409 ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
410 }
411
412 /* compute with 96 bit intermediate result: (a*b)/c */
413 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
414 {
415 union {
416 uint64_t ll;
417 struct {
418 #ifdef WORDS_BIGENDIAN
419 uint32_t high, low;
420 #else
421 uint32_t low, high;
422 #endif
423 } l;
424 } u, res;
425 uint64_t rl, rh;
426
427 u.ll = a;
428 rl = (uint64_t)u.l.low * (uint64_t)b;
429 rh = (uint64_t)u.l.high * (uint64_t)b;
430 rh += (rl >> 32);
431 res.l.high = rh / c;
432 res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
433 return res.ll;
434 }
435
436 #define QEMU_TIMER_REALTIME 0
437 #define QEMU_TIMER_VIRTUAL 1
438
439 struct QEMUClock {
440 int type;
441 /* XXX: add frequency */
442 };
443
444 struct QEMUTimer {
445 QEMUClock *clock;
446 int64_t expire_time;
447 QEMUTimerCB *cb;
448 void *opaque;
449 struct QEMUTimer *next;
450 };
451
452 QEMUClock *rt_clock;
453 QEMUClock *vm_clock;
454
455 static QEMUTimer *active_timers[2];
456 #ifndef _WIN32
457 /* frequency of the times() clock tick */
458 static int timer_freq;
459 #endif
460
461 QEMUClock *qemu_new_clock(int type)
462 {
463 QEMUClock *clock;
464 clock = qemu_mallocz(sizeof(QEMUClock));
465 if (!clock)
466 return NULL;
467 clock->type = type;
468 return clock;
469 }
470
471 QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
472 {
473 QEMUTimer *ts;
474
475 ts = qemu_mallocz(sizeof(QEMUTimer));
476 ts->clock = clock;
477 ts->cb = cb;
478 ts->opaque = opaque;
479 return ts;
480 }
481
482 void qemu_free_timer(QEMUTimer *ts)
483 {
484 qemu_free(ts);
485 }
486
487 /* stop a timer, but do not dealloc it */
488 void qemu_del_timer(QEMUTimer *ts)
489 {
490 QEMUTimer **pt, *t;
491
492 /* NOTE: this code must be signal safe because
493 qemu_timer_expired() can be called from a signal. */
494 pt = &active_timers[ts->clock->type];
495 for(;;) {
496 t = *pt;
497 if (!t)
498 break;
499 if (t == ts) {
500 *pt = t->next;
501 break;
502 }
503 pt = &t->next;
504 }
505 }
506
507 /* modify the current timer so that it will be fired when current_time
508 >= expire_time. The corresponding callback will be called. */
509 void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
510 {
511 QEMUTimer **pt, *t;
512
513 qemu_del_timer(ts);
514
515 /* add the timer in the sorted list */
516 /* NOTE: this code must be signal safe because
517 qemu_timer_expired() can be called from a signal. */
518 pt = &active_timers[ts->clock->type];
519 for(;;) {
520 t = *pt;
521 if (!t)
522 break;
523 if (t->expire_time > expire_time)
524 break;
525 pt = &t->next;
526 }
527 ts->expire_time = expire_time;
528 ts->next = *pt;
529 *pt = ts;
530 }
531
532 int qemu_timer_pending(QEMUTimer *ts)
533 {
534 QEMUTimer *t;
535 for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
536 if (t == ts)
537 return 1;
538 }
539 return 0;
540 }
541
542 static inline int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
543 {
544 if (!timer_head)
545 return 0;
546 return (timer_head->expire_time <= current_time);
547 }
548
549 static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
550 {
551 QEMUTimer *ts;
552
553 for(;;) {
554 ts = *ptimer_head;
555 if (ts->expire_time > current_time)
556 break;
557 /* remove timer from the list before calling the callback */
558 *ptimer_head = ts->next;
559 ts->next = NULL;
560
561 /* run the callback (the timer list can be modified) */
562 ts->cb(ts->opaque);
563 }
564 }
565
566 int64_t qemu_get_clock(QEMUClock *clock)
567 {
568 switch(clock->type) {
569 case QEMU_TIMER_REALTIME:
570 #ifdef _WIN32
571 return GetTickCount();
572 #else
573 /* XXX: portability among Linux hosts */
574 if (timer_freq == 100) {
575 return times(NULL) * 10;
576 } else {
577 return ((int64_t)times(NULL) * 1000) / timer_freq;
578 }
579 #endif
580 default:
581 case QEMU_TIMER_VIRTUAL:
582 return cpu_get_ticks();
583 }
584 }
585
586 /* save a timer */
587 void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
588 {
589 uint64_t expire_time;
590
591 if (qemu_timer_pending(ts)) {
592 expire_time = ts->expire_time;
593 } else {
594 expire_time = -1;
595 }
596 qemu_put_be64(f, expire_time);
597 }
598
599 void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
600 {
601 uint64_t expire_time;
602
603 expire_time = qemu_get_be64(f);
604 if (expire_time != -1) {
605 qemu_mod_timer(ts, expire_time);
606 } else {
607 qemu_del_timer(ts);
608 }
609 }
610
611 static void timer_save(QEMUFile *f, void *opaque)
612 {
613 if (cpu_ticks_enabled) {
614 hw_error("cannot save state if virtual timers are running");
615 }
616 qemu_put_be64s(f, &cpu_ticks_offset);
617 qemu_put_be64s(f, &ticks_per_sec);
618 }
619
620 static int timer_load(QEMUFile *f, void *opaque, int version_id)
621 {
622 if (version_id != 1)
623 return -EINVAL;
624 if (cpu_ticks_enabled) {
625 return -EINVAL;
626 }
627 qemu_get_be64s(f, &cpu_ticks_offset);
628 qemu_get_be64s(f, &ticks_per_sec);
629 return 0;
630 }
631
632 #ifdef _WIN32
633 void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg,
634 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
635 #else
636 static void host_alarm_handler(int host_signum)
637 #endif
638 {
639 if (qemu_timer_expired(active_timers[QEMU_TIMER_VIRTUAL],
640 qemu_get_clock(vm_clock)) ||
641 qemu_timer_expired(active_timers[QEMU_TIMER_REALTIME],
642 qemu_get_clock(rt_clock))) {
643 /* stop the cpu because a timer occured */
644 cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
645 }
646 }
647
648 static void init_timers(void)
649 {
650 rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
651 vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
652
653 #ifdef _WIN32
654 {
655 int count=0;
656 MMRESULT timerID = timeSetEvent(10, // interval (ms)
657 0, // resolution
658 host_alarm_handler, // function
659 (DWORD)&count, // user parameter
660 TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
661 if( !timerID ) {
662 perror("failed timer alarm");
663 exit(1);
664 }
665 }
666 pit_min_timer_count = ((uint64_t)10000 * PIT_FREQ) / 1000000;
667 #else
668 {
669 struct sigaction act;
670 struct itimerval itv;
671
672 /* get times() syscall frequency */
673 timer_freq = sysconf(_SC_CLK_TCK);
674
675 /* timer signal */
676 sigfillset(&act.sa_mask);
677 act.sa_flags = 0;
678 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
679 act.sa_flags |= SA_ONSTACK;
680 #endif
681 act.sa_handler = host_alarm_handler;
682 sigaction(SIGALRM, &act, NULL);
683
684 itv.it_interval.tv_sec = 0;
685 itv.it_interval.tv_usec = 1000;
686 itv.it_value.tv_sec = 0;
687 itv.it_value.tv_usec = 10 * 1000;
688 setitimer(ITIMER_REAL, &itv, NULL);
689 /* we probe the tick duration of the kernel to inform the user if
690 the emulated kernel requested a too high timer frequency */
691 getitimer(ITIMER_REAL, &itv);
692 pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) /
693 1000000;
694 }
695 #endif
696 }
697
698 /***********************************************************/
699 /* serial device */
700
701 #ifdef _WIN32
702
703 int serial_open_device(void)
704 {
705 return -1;
706 }
707
708 #else
709
710 int serial_open_device(void)
711 {
712 char slave_name[1024];
713 int master_fd, slave_fd;
714
715 if (serial_console == NULL && nographic) {
716 /* use console for serial port */
717 return 0;
718 } else {
719 if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
720 fprintf(stderr, "warning: could not create pseudo terminal for serial port\n");
721 return -1;
722 }
723 fprintf(stderr, "Serial port redirected to %s\n", slave_name);
724 return master_fd;
725 }
726 }
727
728 #endif
729
730 /***********************************************************/
731 /* Linux network device redirector */
732
733 #ifdef _WIN32
734
735 static int net_init(void)
736 {
737 return 0;
738 }
739
740 void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
741 {
742 }
743
744 #else
745
746 static int tun_open(char *ifname, int ifname_size)
747 {
748 struct ifreq ifr;
749 int fd, ret;
750
751 fd = open("/dev/net/tun", O_RDWR);
752 if (fd < 0) {
753 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
754 return -1;
755 }
756 memset(&ifr, 0, sizeof(ifr));
757 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
758 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
759 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
760 if (ret != 0) {
761 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
762 close(fd);
763 return -1;
764 }
765 printf("Connected to host network interface: %s\n", ifr.ifr_name);
766 pstrcpy(ifname, ifname_size, ifr.ifr_name);
767 fcntl(fd, F_SETFL, O_NONBLOCK);
768 return fd;
769 }
770
771 static int net_init(void)
772 {
773 int pid, status, launch_script, i;
774 NetDriverState *nd;
775 char *args[MAX_NICS + 2];
776 char **parg;
777
778 launch_script = 0;
779 for(i = 0; i < nb_nics; i++) {
780 nd = &nd_table[i];
781 if (nd->fd < 0) {
782 nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
783 if (nd->fd >= 0)
784 launch_script = 1;
785 }
786 }
787
788 if (launch_script) {
789 /* try to launch network init script */
790 pid = fork();
791 if (pid >= 0) {
792 if (pid == 0) {
793 parg = args;
794 *parg++ = network_script;
795 for(i = 0; i < nb_nics; i++) {
796 nd = &nd_table[i];
797 if (nd->fd >= 0) {
798 *parg++ = nd->ifname;
799 }
800 }
801 *parg++ = NULL;
802 execv(network_script, args);
803 exit(1);
804 }
805 while (waitpid(pid, &status, 0) != pid);
806 if (!WIFEXITED(status) ||
807 WEXITSTATUS(status) != 0) {
808 fprintf(stderr, "%s: could not launch network script\n",
809 network_script);
810 }
811 }
812 }
813 return 0;
814 }
815
816 void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
817 {
818 #ifdef DEBUG_NE2000
819 printf("NE2000: sending packet size=%d\n", size);
820 #endif
821 write(nd->fd, buf, size);
822 }
823
824 #endif
825
826 /***********************************************************/
827 /* dumb display */
828
829 #ifdef _WIN32
830
831 static void term_exit(void)
832 {
833 }
834
835 static void term_init(void)
836 {
837 }
838
839 #else
840
841 /* init terminal so that we can grab keys */
842 static struct termios oldtty;
843
844 static void term_exit(void)
845 {
846 tcsetattr (0, TCSANOW, &oldtty);
847 }
848
849 static void term_init(void)
850 {
851 struct termios tty;
852
853 tcgetattr (0, &tty);
854 oldtty = tty;
855
856 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
857 |INLCR|IGNCR|ICRNL|IXON);
858 tty.c_oflag |= OPOST;
859 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
860 /* if graphical mode, we allow Ctrl-C handling */
861 if (nographic)
862 tty.c_lflag &= ~ISIG;
863 tty.c_cflag &= ~(CSIZE|PARENB);
864 tty.c_cflag |= CS8;
865 tty.c_cc[VMIN] = 1;
866 tty.c_cc[VTIME] = 0;
867
868 tcsetattr (0, TCSANOW, &tty);
869
870 atexit(term_exit);
871
872 fcntl(0, F_SETFL, O_NONBLOCK);
873 }
874
875 #endif
876
877 static void dumb_update(DisplayState *ds, int x, int y, int w, int h)
878 {
879 }
880
881 static void dumb_resize(DisplayState *ds, int w, int h)
882 {
883 }
884
885 static void dumb_refresh(DisplayState *ds)
886 {
887 vga_update_display();
888 }
889
890 void dumb_display_init(DisplayState *ds)
891 {
892 ds->data = NULL;
893 ds->linesize = 0;
894 ds->depth = 0;
895 ds->dpy_update = dumb_update;
896 ds->dpy_resize = dumb_resize;
897 ds->dpy_refresh = dumb_refresh;
898 }
899
900 #if !defined(CONFIG_SOFTMMU)
901 /***********************************************************/
902 /* cpu signal handler */
903 static void host_segv_handler(int host_signum, siginfo_t *info,
904 void *puc)
905 {
906 if (cpu_signal_handler(host_signum, info, puc))
907 return;
908 term_exit();
909 abort();
910 }
911 #endif
912
913 /***********************************************************/
914 /* I/O handling */
915
916 #define MAX_IO_HANDLERS 64
917
918 typedef struct IOHandlerRecord {
919 int fd;
920 IOCanRWHandler *fd_can_read;
921 IOReadHandler *fd_read;
922 void *opaque;
923 /* temporary data */
924 struct pollfd *ufd;
925 int max_size;
926 struct IOHandlerRecord *next;
927 } IOHandlerRecord;
928
929 static IOHandlerRecord *first_io_handler;
930
931 int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read,
932 IOReadHandler *fd_read, void *opaque)
933 {
934 IOHandlerRecord *ioh;
935
936 ioh = qemu_mallocz(sizeof(IOHandlerRecord));
937 if (!ioh)
938 return -1;
939 ioh->fd = fd;
940 ioh->fd_can_read = fd_can_read;
941 ioh->fd_read = fd_read;
942 ioh->opaque = opaque;
943 ioh->next = first_io_handler;
944 first_io_handler = ioh;
945 return 0;
946 }
947
948 void qemu_del_fd_read_handler(int fd)
949 {
950 IOHandlerRecord **pioh, *ioh;
951
952 pioh = &first_io_handler;
953 for(;;) {
954 ioh = *pioh;
955 if (ioh == NULL)
956 break;
957 if (ioh->fd == fd) {
958 *pioh = ioh->next;
959 break;
960 }
961 pioh = &ioh->next;
962 }
963 }
964
965 /***********************************************************/
966 /* savevm/loadvm support */
967
968 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
969 {
970 fwrite(buf, 1, size, f);
971 }
972
973 void qemu_put_byte(QEMUFile *f, int v)
974 {
975 fputc(v, f);
976 }
977
978 void qemu_put_be16(QEMUFile *f, unsigned int v)
979 {
980 qemu_put_byte(f, v >> 8);
981 qemu_put_byte(f, v);
982 }
983
984 void qemu_put_be32(QEMUFile *f, unsigned int v)
985 {
986 qemu_put_byte(f, v >> 24);
987 qemu_put_byte(f, v >> 16);
988 qemu_put_byte(f, v >> 8);
989 qemu_put_byte(f, v);
990 }
991
992 void qemu_put_be64(QEMUFile *f, uint64_t v)
993 {
994 qemu_put_be32(f, v >> 32);
995 qemu_put_be32(f, v);
996 }
997
998 int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
999 {
1000 return fread(buf, 1, size, f);
1001 }
1002
1003 int qemu_get_byte(QEMUFile *f)
1004 {
1005 int v;
1006 v = fgetc(f);
1007 if (v == EOF)
1008 return 0;
1009 else
1010 return v;
1011 }
1012
1013 unsigned int qemu_get_be16(QEMUFile *f)
1014 {
1015 unsigned int v;
1016 v = qemu_get_byte(f) << 8;
1017 v |= qemu_get_byte(f);
1018 return v;
1019 }
1020
1021 unsigned int qemu_get_be32(QEMUFile *f)
1022 {
1023 unsigned int v;
1024 v = qemu_get_byte(f) << 24;
1025 v |= qemu_get_byte(f) << 16;
1026 v |= qemu_get_byte(f) << 8;
1027 v |= qemu_get_byte(f);
1028 return v;
1029 }
1030
1031 uint64_t qemu_get_be64(QEMUFile *f)
1032 {
1033 uint64_t v;
1034 v = (uint64_t)qemu_get_be32(f) << 32;
1035 v |= qemu_get_be32(f);
1036 return v;
1037 }
1038
1039 int64_t qemu_ftell(QEMUFile *f)
1040 {
1041 return ftell(f);
1042 }
1043
1044 int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
1045 {
1046 if (fseek(f, pos, whence) < 0)
1047 return -1;
1048 return ftell(f);
1049 }
1050
1051 typedef struct SaveStateEntry {
1052 char idstr[256];
1053 int instance_id;
1054 int version_id;
1055 SaveStateHandler *save_state;
1056 LoadStateHandler *load_state;
1057 void *opaque;
1058 struct SaveStateEntry *next;
1059 } SaveStateEntry;
1060
1061 static SaveStateEntry *first_se;
1062
1063 int register_savevm(const char *idstr,
1064 int instance_id,
1065 int version_id,
1066 SaveStateHandler *save_state,
1067 LoadStateHandler *load_state,
1068 void *opaque)
1069 {
1070 SaveStateEntry *se, **pse;
1071
1072 se = qemu_malloc(sizeof(SaveStateEntry));
1073 if (!se)
1074 return -1;
1075 pstrcpy(se->idstr, sizeof(se->idstr), idstr);
1076 se->instance_id = instance_id;
1077 se->version_id = version_id;
1078 se->save_state = save_state;
1079 se->load_state = load_state;
1080 se->opaque = opaque;
1081 se->next = NULL;
1082
1083 /* add at the end of list */
1084 pse = &first_se;
1085 while (*pse != NULL)
1086 pse = &(*pse)->next;
1087 *pse = se;
1088 return 0;
1089 }
1090
1091 #define QEMU_VM_FILE_MAGIC 0x5145564d
1092 #define QEMU_VM_FILE_VERSION 0x00000001
1093
1094 int qemu_savevm(const char *filename)
1095 {
1096 SaveStateEntry *se;
1097 QEMUFile *f;
1098 int len, len_pos, cur_pos, saved_vm_running, ret;
1099
1100 saved_vm_running = vm_running;
1101 vm_stop(0);
1102
1103 f = fopen(filename, "wb");
1104 if (!f) {
1105 ret = -1;
1106 goto the_end;
1107 }
1108
1109 qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
1110 qemu_put_be32(f, QEMU_VM_FILE_VERSION);
1111
1112 for(se = first_se; se != NULL; se = se->next) {
1113 /* ID string */
1114 len = strlen(se->idstr);
1115 qemu_put_byte(f, len);
1116 qemu_put_buffer(f, se->idstr, len);
1117
1118 qemu_put_be32(f, se->instance_id);
1119 qemu_put_be32(f, se->version_id);
1120
1121 /* record size: filled later */
1122 len_pos = ftell(f);
1123 qemu_put_be32(f, 0);
1124
1125 se->save_state(f, se->opaque);
1126
1127 /* fill record size */
1128 cur_pos = ftell(f);
1129 len = ftell(f) - len_pos - 4;
1130 fseek(f, len_pos, SEEK_SET);
1131 qemu_put_be32(f, len);
1132 fseek(f, cur_pos, SEEK_SET);
1133 }
1134
1135 fclose(f);
1136 ret = 0;
1137 the_end:
1138 if (saved_vm_running)
1139 vm_start();
1140 return ret;
1141 }
1142
1143 static SaveStateEntry *find_se(const char *idstr, int instance_id)
1144 {
1145 SaveStateEntry *se;
1146
1147 for(se = first_se; se != NULL; se = se->next) {
1148 if (!strcmp(se->idstr, idstr) &&
1149 instance_id == se->instance_id)
1150 return se;
1151 }
1152 return NULL;
1153 }
1154
1155 int qemu_loadvm(const char *filename)
1156 {
1157 SaveStateEntry *se;
1158 QEMUFile *f;
1159 int len, cur_pos, ret, instance_id, record_len, version_id;
1160 int saved_vm_running;
1161 unsigned int v;
1162 char idstr[256];
1163
1164 saved_vm_running = vm_running;
1165 vm_stop(0);
1166
1167 f = fopen(filename, "rb");
1168 if (!f) {
1169 ret = -1;
1170 goto the_end;
1171 }
1172
1173 v = qemu_get_be32(f);
1174 if (v != QEMU_VM_FILE_MAGIC)
1175 goto fail;
1176 v = qemu_get_be32(f);
1177 if (v != QEMU_VM_FILE_VERSION) {
1178 fail:
1179 fclose(f);
1180 ret = -1;
1181 goto the_end;
1182 }
1183 for(;;) {
1184 len = qemu_get_byte(f);
1185 if (feof(f))
1186 break;
1187 qemu_get_buffer(f, idstr, len);
1188 idstr[len] = '\0';
1189 instance_id = qemu_get_be32(f);
1190 version_id = qemu_get_be32(f);
1191 record_len = qemu_get_be32(f);
1192 #if 0
1193 printf("idstr=%s instance=0x%x version=%d len=%d\n",
1194 idstr, instance_id, version_id, record_len);
1195 #endif
1196 cur_pos = ftell(f);
1197 se = find_se(idstr, instance_id);
1198 if (!se) {
1199 fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n",
1200 instance_id, idstr);
1201 } else {
1202 ret = se->load_state(f, se->opaque, version_id);
1203 if (ret < 0) {
1204 fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
1205 instance_id, idstr);
1206 }
1207 }
1208 /* always seek to exact end of record */
1209 qemu_fseek(f, cur_pos + record_len, SEEK_SET);
1210 }
1211 fclose(f);
1212 ret = 0;
1213 the_end:
1214 if (saved_vm_running)
1215 vm_start();
1216 return ret;
1217 }
1218
1219 /***********************************************************/
1220 /* cpu save/restore */
1221
1222 #if defined(TARGET_I386)
1223
1224 static void cpu_put_seg(QEMUFile *f, SegmentCache *dt)
1225 {
1226 qemu_put_be32(f, (uint32_t)dt->base);
1227 qemu_put_be32(f, dt->limit);
1228 qemu_put_be32(f, dt->flags);
1229 }
1230
1231 static void cpu_get_seg(QEMUFile *f, SegmentCache *dt)
1232 {
1233 dt->base = (uint8_t *)qemu_get_be32(f);
1234 dt->limit = qemu_get_be32(f);
1235 dt->flags = qemu_get_be32(f);
1236 }
1237
1238 void cpu_save(QEMUFile *f, void *opaque)
1239 {
1240 CPUState *env = opaque;
1241 uint16_t fptag, fpus, fpuc;
1242 uint32_t hflags;
1243 int i;
1244
1245 for(i = 0; i < 8; i++)
1246 qemu_put_be32s(f, &env->regs[i]);
1247 qemu_put_be32s(f, &env->eip);
1248 qemu_put_be32s(f, &env->eflags);
1249 qemu_put_be32s(f, &env->eflags);
1250 hflags = env->hflags; /* XXX: suppress most of the redundant hflags */
1251 qemu_put_be32s(f, &hflags);
1252
1253 /* FPU */
1254 fpuc = env->fpuc;
1255 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
1256 fptag = 0;
1257 for (i=7; i>=0; i--) {
1258 fptag <<= 2;
1259 if (env->fptags[i]) {
1260 fptag |= 3;
1261 }
1262 }
1263
1264 qemu_put_be16s(f, &fpuc);
1265 qemu_put_be16s(f, &fpus);
1266 qemu_put_be16s(f, &fptag);
1267
1268 for(i = 0; i < 8; i++) {
1269 uint64_t mant;
1270 uint16_t exp;
1271 cpu_get_fp80(&mant, &exp, env->fpregs[i]);
1272 qemu_put_be64(f, mant);
1273 qemu_put_be16(f, exp);
1274 }
1275
1276 for(i = 0; i < 6; i++)
1277 cpu_put_seg(f, &env->segs[i]);
1278 cpu_put_seg(f, &env->ldt);
1279 cpu_put_seg(f, &env->tr);
1280 cpu_put_seg(f, &env->gdt);
1281 cpu_put_seg(f, &env->idt);
1282
1283 qemu_put_be32s(f, &env->sysenter_cs);
1284 qemu_put_be32s(f, &env->sysenter_esp);
1285 qemu_put_be32s(f, &env->sysenter_eip);
1286
1287 qemu_put_be32s(f, &env->cr[0]);
1288 qemu_put_be32s(f, &env->cr[2]);
1289 qemu_put_be32s(f, &env->cr[3]);
1290 qemu_put_be32s(f, &env->cr[4]);
1291
1292 for(i = 0; i < 8; i++)
1293 qemu_put_be32s(f, &env->dr[i]);
1294
1295 /* MMU */
1296 qemu_put_be32s(f, &env->a20_mask);
1297 }
1298
1299 int cpu_load(QEMUFile *f, void *opaque, int version_id)
1300 {
1301 CPUState *env = opaque;
1302 int i;
1303 uint32_t hflags;
1304 uint16_t fpus, fpuc, fptag;
1305
1306 if (version_id != 1)
1307 return -EINVAL;
1308 for(i = 0; i < 8; i++)
1309 qemu_get_be32s(f, &env->regs[i]);
1310 qemu_get_be32s(f, &env->eip);
1311 qemu_get_be32s(f, &env->eflags);
1312 qemu_get_be32s(f, &env->eflags);
1313 qemu_get_be32s(f, &hflags);
1314
1315 qemu_get_be16s(f, &fpuc);
1316 qemu_get_be16s(f, &fpus);
1317 qemu_get_be16s(f, &fptag);
1318
1319 for(i = 0; i < 8; i++) {
1320 uint64_t mant;
1321 uint16_t exp;
1322 mant = qemu_get_be64(f);
1323 exp = qemu_get_be16(f);
1324 env->fpregs[i] = cpu_set_fp80(mant, exp);
1325 }
1326
1327 env->fpuc = fpuc;
1328 env->fpstt = (fpus >> 11) & 7;
1329 env->fpus = fpus & ~0x3800;
1330 for(i = 0; i < 8; i++) {
1331 env->fptags[i] = ((fptag & 3) == 3);
1332 fptag >>= 2;
1333 }
1334
1335 for(i = 0; i < 6; i++)
1336 cpu_get_seg(f, &env->segs[i]);
1337 cpu_get_seg(f, &env->ldt);
1338 cpu_get_seg(f, &env->tr);
1339 cpu_get_seg(f, &env->gdt);
1340 cpu_get_seg(f, &env->idt);
1341
1342 qemu_get_be32s(f, &env->sysenter_cs);
1343 qemu_get_be32s(f, &env->sysenter_esp);
1344 qemu_get_be32s(f, &env->sysenter_eip);
1345
1346 qemu_get_be32s(f, &env->cr[0]);
1347 qemu_get_be32s(f, &env->cr[2]);
1348 qemu_get_be32s(f, &env->cr[3]);
1349 qemu_get_be32s(f, &env->cr[4]);
1350
1351 for(i = 0; i < 8; i++)
1352 qemu_get_be32s(f, &env->dr[i]);
1353
1354 /* MMU */
1355 qemu_get_be32s(f, &env->a20_mask);
1356
1357 /* XXX: compute hflags from scratch, except for CPL and IIF */
1358 env->hflags = hflags;
1359 tlb_flush(env, 1);
1360 return 0;
1361 }
1362
1363 #else
1364
1365 #warning No CPU save/restore functions
1366
1367 #endif
1368
1369 /***********************************************************/
1370 /* ram save/restore */
1371
1372 /* we just avoid storing empty pages */
1373 static void ram_put_page(QEMUFile *f, const uint8_t *buf, int len)
1374 {
1375 int i, v;
1376
1377 v = buf[0];
1378 for(i = 1; i < len; i++) {
1379 if (buf[i] != v)
1380 goto normal_save;
1381 }
1382 qemu_put_byte(f, 1);
1383 qemu_put_byte(f, v);
1384 return;
1385 normal_save:
1386 qemu_put_byte(f, 0);
1387 qemu_put_buffer(f, buf, len);
1388 }
1389
1390 static int ram_get_page(QEMUFile *f, uint8_t *buf, int len)
1391 {
1392 int v;
1393
1394 v = qemu_get_byte(f);
1395 switch(v) {
1396 case 0:
1397 if (qemu_get_buffer(f, buf, len) != len)
1398 return -EIO;
1399 break;
1400 case 1:
1401 v = qemu_get_byte(f);
1402 memset(buf, v, len);
1403 break;
1404 default:
1405 return -EINVAL;
1406 }
1407 return 0;
1408 }
1409
1410 static void ram_save(QEMUFile *f, void *opaque)
1411 {
1412 int i;
1413 qemu_put_be32(f, phys_ram_size);
1414 for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
1415 ram_put_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
1416 }
1417 }
1418
1419 static int ram_load(QEMUFile *f, void *opaque, int version_id)
1420 {
1421 int i, ret;
1422
1423 if (version_id != 1)
1424 return -EINVAL;
1425 if (qemu_get_be32(f) != phys_ram_size)
1426 return -EINVAL;
1427 for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
1428 ret = ram_get_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
1429 if (ret)
1430 return ret;
1431 }
1432 return 0;
1433 }
1434
1435 /***********************************************************/
1436 /* main execution loop */
1437
1438 void gui_update(void *opaque)
1439 {
1440 display_state.dpy_refresh(&display_state);
1441 qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
1442 }
1443
1444 /* XXX: support several handlers */
1445 VMStopHandler *vm_stop_cb;
1446 VMStopHandler *vm_stop_opaque;
1447
1448 int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
1449 {
1450 vm_stop_cb = cb;
1451 vm_stop_opaque = opaque;
1452 return 0;
1453 }
1454
1455 void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque)
1456 {
1457 vm_stop_cb = NULL;
1458 }
1459
1460 void vm_start(void)
1461 {
1462 if (!vm_running) {
1463 cpu_enable_ticks();
1464 vm_running = 1;
1465 }
1466 }
1467
1468 void vm_stop(int reason)
1469 {
1470 if (vm_running) {
1471 cpu_disable_ticks();
1472 vm_running = 0;
1473 if (reason != 0) {
1474 if (vm_stop_cb) {
1475 vm_stop_cb(vm_stop_opaque, reason);
1476 }
1477 }
1478 }
1479 }
1480
1481 int main_loop(void)
1482 {
1483 #ifndef _WIN32
1484 struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf;
1485 IOHandlerRecord *ioh, *ioh_next;
1486 uint8_t buf[4096];
1487 int n, max_size;
1488 #endif
1489 int ret, timeout;
1490 CPUState *env = global_env;
1491
1492 for(;;) {
1493 if (vm_running) {
1494 ret = cpu_exec(env);
1495 if (reset_requested) {
1496 ret = EXCP_INTERRUPT;
1497 break;
1498 }
1499 if (ret == EXCP_DEBUG) {
1500 vm_stop(EXCP_DEBUG);
1501 }
1502 /* if hlt instruction, we wait until the next IRQ */
1503 /* XXX: use timeout computed from timers */
1504 if (ret == EXCP_HLT)
1505 timeout = 10;
1506 else
1507 timeout = 0;
1508 } else {
1509 timeout = 10;
1510 }
1511
1512 #ifndef _WIN32
1513 /* poll any events */
1514 /* XXX: separate device handlers from system ones */
1515 pf = ufds;
1516 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
1517 if (!ioh->fd_can_read) {
1518 max_size = 0;
1519 pf->fd = ioh->fd;
1520 pf->events = POLLIN;
1521 ioh->ufd = pf;
1522 pf++;
1523 } else {
1524 max_size = ioh->fd_can_read(ioh->opaque);
1525 if (max_size > 0) {
1526 if (max_size > sizeof(buf))
1527 max_size = sizeof(buf);
1528 pf->fd = ioh->fd;
1529 pf->events = POLLIN;
1530 ioh->ufd = pf;
1531 pf++;
1532 } else {
1533 ioh->ufd = NULL;
1534 }
1535 }
1536 ioh->max_size = max_size;
1537 }
1538
1539 ret = poll(ufds, pf - ufds, timeout);
1540 if (ret > 0) {
1541 /* XXX: better handling of removal */
1542 for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
1543 ioh_next = ioh->next;
1544 pf = ioh->ufd;
1545 if (pf) {
1546 if (pf->revents & POLLIN) {
1547 if (ioh->max_size == 0) {
1548 /* just a read event */
1549 ioh->fd_read(ioh->opaque, NULL, 0);
1550 } else {
1551 n = read(ioh->fd, buf, ioh->max_size);
1552 if (n >= 0) {
1553 ioh->fd_read(ioh->opaque, buf, n);
1554 } else if (errno != -EAGAIN) {
1555 ioh->fd_read(ioh->opaque, NULL, -errno);
1556 }
1557 }
1558 }
1559 }
1560 }
1561 }
1562 #endif
1563
1564 if (vm_running) {
1565 qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL],
1566 qemu_get_clock(vm_clock));
1567
1568 /* XXX: add explicit timer */
1569 SB16_run();
1570
1571 /* run dma transfers, if any */
1572 DMA_run();
1573 }
1574
1575 /* real time timers */
1576 qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME],
1577 qemu_get_clock(rt_clock));
1578 }
1579 cpu_disable_ticks();
1580 return ret;
1581 }
1582
1583 void help(void)
1584 {
1585 printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1586 "usage: %s [options] [disk_image]\n"
1587 "\n"
1588 "'disk_image' is a raw hard image image for IDE hard disk 0\n"
1589 "\n"
1590 "Standard options:\n"
1591 "-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
1592 "-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
1593 "-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
1594 "-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
1595 "-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
1596 "-snapshot write to temporary files instead of disk image files\n"
1597 "-m megs set virtual RAM size to megs MB\n"
1598 "-nographic disable graphical output and redirect serial I/Os to console\n"
1599 "\n"
1600 "Network options:\n"
1601 "-n script set network init script [default=%s]\n"
1602 "-nics n simulate 'n' network interfaces [default=1]\n"
1603 "-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n"
1604 "\n"
1605 "Linux boot specific:\n"
1606 "-kernel bzImage use 'bzImage' as kernel image\n"
1607 "-append cmdline use 'cmdline' as kernel command line\n"
1608 "-initrd file use 'file' as initial ram disk\n"
1609 "\n"
1610 "Debug/Expert options:\n"
1611 "-s wait gdb connection to port %d\n"
1612 "-p port change gdb connection port\n"
1613 "-d item1,... output log to %s (use -d ? for a list of log items)\n"
1614 "-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
1615 "-L path set the directory for the BIOS and VGA BIOS\n"
1616 #ifdef USE_CODE_COPY
1617 "-no-code-copy disable code copy acceleration\n"
1618 #endif
1619
1620 "\n"
1621 "During emulation, use C-a h to get terminal commands:\n",
1622 #ifdef CONFIG_SOFTMMU
1623 "qemu",
1624 #else
1625 "qemu-fast",
1626 #endif
1627 DEFAULT_NETWORK_SCRIPT,
1628 DEFAULT_GDBSTUB_PORT,
1629 "/tmp/qemu.log");
1630 term_print_help();
1631 #ifndef CONFIG_SOFTMMU
1632 printf("\n"
1633 "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
1634 "work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
1635 "PC emulation.\n");
1636 #endif
1637 exit(1);
1638 }
1639
1640 struct option long_options[] = {
1641 { "initrd", 1, NULL, 0, },
1642 { "hda", 1, NULL, 0, },
1643 { "hdb", 1, NULL, 0, },
1644 { "snapshot", 0, NULL, 0, },
1645 { "hdachs", 1, NULL, 0, },
1646 { "nographic", 0, NULL, 0, },
1647 { "kernel", 1, NULL, 0, },
1648 { "append", 1, NULL, 0, },
1649 { "tun-fd", 1, NULL, 0, },
1650 { "hdc", 1, NULL, 0, },
1651 { "hdd", 1, NULL, 0, },
1652 { "cdrom", 1, NULL, 0, },
1653 { "boot", 1, NULL, 0, },
1654 { "fda", 1, NULL, 0, },
1655 { "fdb", 1, NULL, 0, },
1656 { "no-code-copy", 0, NULL, 0 },
1657 { "nics", 1, NULL, 0 },
1658 { NULL, 0, NULL, 0 },
1659 };
1660
1661 #ifdef CONFIG_SDL
1662 /* SDL use the pthreads and they modify sigaction. We don't
1663 want that. */
1664 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1665 extern void __libc_sigaction();
1666 #define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
1667 #else
1668 extern void __sigaction();
1669 #define sigaction(sig, act, oact) __sigaction(sig, act, oact)
1670 #endif
1671 #endif /* CONFIG_SDL */
1672
1673 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
1674
1675 /* this stack is only used during signal handling */
1676 #define SIGNAL_STACK_SIZE 32768
1677
1678 static uint8_t *signal_stack;
1679
1680 #endif
1681
1682 int main(int argc, char **argv)
1683 {
1684 #ifdef CONFIG_GDBSTUB
1685 int use_gdbstub, gdbstub_port;
1686 #endif
1687 int c, i, long_index, has_cdrom;
1688 int snapshot, linux_boot;
1689 CPUState *env;
1690 const char *initrd_filename;
1691 const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
1692 const char *kernel_filename, *kernel_cmdline;
1693 DisplayState *ds = &display_state;
1694 int cyls, heads, secs;
1695
1696 #if !defined(CONFIG_SOFTMMU)
1697 /* we never want that malloc() uses mmap() */
1698 mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
1699 #endif
1700 initrd_filename = NULL;
1701 for(i = 0; i < MAX_FD; i++)
1702 fd_filename[i] = NULL;
1703 for(i = 0; i < MAX_DISKS; i++)
1704 hd_filename[i] = NULL;
1705 ram_size = 32 * 1024 * 1024;
1706 vga_ram_size = VGA_RAM_SIZE;
1707 pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
1708 #ifdef CONFIG_GDBSTUB
1709 use_gdbstub = 0;
1710 gdbstub_port = DEFAULT_GDBSTUB_PORT;
1711 #endif
1712 snapshot = 0;
1713 nographic = 0;
1714 kernel_filename = NULL;
1715 kernel_cmdline = "";
1716 has_cdrom = 1;
1717 cyls = heads = secs = 0;
1718
1719 nb_nics = 1;
1720 for(i = 0; i < MAX_NICS; i++) {
1721 NetDriverState *nd = &nd_table[i];
1722 nd->fd = -1;
1723 /* init virtual mac address */
1724 nd->macaddr[0] = 0x52;
1725 nd->macaddr[1] = 0x54;
1726 nd->macaddr[2] = 0x00;
1727 nd->macaddr[3] = 0x12;
1728 nd->macaddr[4] = 0x34;
1729 nd->macaddr[5] = 0x56 + i;
1730 }
1731
1732 for(;;) {
1733 c = getopt_long_only(argc, argv, "hm:d:n:sp:L:", long_options, &long_index);
1734 if (c == -1)
1735 break;
1736 switch(c) {
1737 case 0:
1738 switch(long_index) {
1739 case 0:
1740 initrd_filename = optarg;
1741 break;
1742 case 1:
1743 hd_filename[0] = optarg;
1744 break;
1745 case 2:
1746 hd_filename[1] = optarg;
1747 break;
1748 case 3:
1749 snapshot = 1;
1750 break;
1751 case 4:
1752 {
1753 const char *p;
1754 p = optarg;
1755 cyls = strtol(p, (char **)&p, 0);
1756 if (*p != ',')
1757 goto chs_fail;
1758 p++;
1759 heads = strtol(p, (char **)&p, 0);
1760 if (*p != ',')
1761 goto chs_fail;
1762 p++;
1763 secs = strtol(p, (char **)&p, 0);
1764 if (*p != '\0') {
1765 chs_fail:
1766 cyls = 0;
1767 }
1768 }
1769 break;
1770 case 5:
1771 nographic = 1;
1772 break;
1773 case 6:
1774 kernel_filename = optarg;
1775 break;
1776 case 7:
1777 kernel_cmdline = optarg;
1778 break;
1779 case 8:
1780 {
1781 const char *p;
1782 int fd;
1783 p = optarg;
1784 nb_nics = 0;
1785 for(;;) {
1786 fd = strtol(p, (char **)&p, 0);
1787 nd_table[nb_nics].fd = fd;
1788 snprintf(nd_table[nb_nics].ifname,
1789 sizeof(nd_table[nb_nics].ifname),
1790 "fd%d", nb_nics);
1791 nb_nics++;
1792 if (*p == ',') {
1793 p++;
1794 } else if (*p != '\0') {
1795 fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics);
1796 exit(1);
1797 } else {
1798 break;
1799 }
1800 }
1801 }
1802 break;
1803 case 9:
1804 hd_filename[2] = optarg;
1805 has_cdrom = 0;
1806 break;
1807 case 10:
1808 hd_filename[3] = optarg;
1809 break;
1810 case 11:
1811 hd_filename[2] = optarg;
1812 has_cdrom = 1;
1813 break;
1814 case 12:
1815 boot_device = optarg[0];
1816 if (boot_device != 'a' && boot_device != 'b' &&
1817 boot_device != 'c' && boot_device != 'd') {
1818 fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
1819 exit(1);
1820 }
1821 break;
1822 case 13:
1823 fd_filename[0] = optarg;
1824 break;
1825 case 14:
1826 fd_filename[1] = optarg;
1827 break;
1828 case 15:
1829 code_copy_enabled = 0;
1830 break;
1831 case 16:
1832 nb_nics = atoi(optarg);
1833 if (nb_nics < 1 || nb_nics > MAX_NICS) {
1834 fprintf(stderr, "qemu: invalid number of network interfaces\n");
1835 exit(1);
1836 }
1837 break;
1838 }
1839 break;
1840 case 'h':
1841 help();
1842 break;
1843 case 'm':
1844 ram_size = atoi(optarg) * 1024 * 1024;
1845 if (ram_size <= 0)
1846 help();
1847 if (ram_size > PHYS_RAM_MAX_SIZE) {
1848 fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
1849 PHYS_RAM_MAX_SIZE / (1024 * 1024));
1850 exit(1);
1851 }
1852 break;
1853 case 'd':
1854 {
1855 int mask;
1856 CPULogItem *item;
1857
1858 mask = cpu_str_to_log_mask(optarg);
1859 if (!mask) {
1860 printf("Log items (comma separated):\n");
1861 for(item = cpu_log_items; item->mask != 0; item++) {
1862 printf("%-10s %s\n", item->name, item->help);
1863 }
1864 exit(1);
1865 }
1866 cpu_set_log(mask);
1867 }
1868 break;
1869 case 'n':
1870 pstrcpy(network_script, sizeof(network_script), optarg);
1871 break;
1872 #ifdef CONFIG_GDBSTUB
1873 case 's':
1874 use_gdbstub = 1;
1875 break;
1876 case 'p':
1877 gdbstub_port = atoi(optarg);
1878 break;
1879 #endif
1880 case 'L':
1881 bios_dir = optarg;
1882 break;
1883 }
1884 }
1885
1886 if (optind < argc) {
1887 hd_filename[0] = argv[optind++];
1888 }
1889
1890 linux_boot = (kernel_filename != NULL);
1891
1892 if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
1893 fd_filename[0] == '\0')
1894 help();
1895
1896 /* boot to cd by default if no hard disk */
1897 if (hd_filename[0] == '\0' && boot_device == 'c') {
1898 if (fd_filename[0] != '\0')
1899 boot_device = 'a';
1900 else
1901 boot_device = 'd';
1902 }
1903
1904 #if !defined(CONFIG_SOFTMMU)
1905 /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
1906 {
1907 static uint8_t stdout_buf[4096];
1908 setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
1909 }
1910 #else
1911 setvbuf(stdout, NULL, _IOLBF, 0);
1912 #endif
1913
1914 /* init host network redirectors */
1915 net_init();
1916
1917 /* init the memory */
1918 phys_ram_size = ram_size + vga_ram_size;
1919
1920 #ifdef CONFIG_SOFTMMU
1921 phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
1922 if (!phys_ram_base) {
1923 fprintf(stderr, "Could not allocate physical memory\n");
1924 exit(1);
1925 }
1926 #else
1927 /* as we must map the same page at several addresses, we must use
1928 a fd */
1929 {
1930 const char *tmpdir;
1931
1932 tmpdir = getenv("QEMU_TMPDIR");
1933 if (!tmpdir)
1934 tmpdir = "/tmp";
1935 snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
1936 if (mkstemp(phys_ram_file) < 0) {
1937 fprintf(stderr, "Could not create temporary memory file '%s'\n",
1938 phys_ram_file);
1939 exit(1);
1940 }
1941 phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
1942 if (phys_ram_fd < 0) {
1943 fprintf(stderr, "Could not open temporary memory file '%s'\n",
1944 phys_ram_file);
1945 exit(1);
1946 }
1947 ftruncate(phys_ram_fd, phys_ram_size);
1948 unlink(phys_ram_file);
1949 phys_ram_base = mmap(get_mmap_addr(phys_ram_size),
1950 phys_ram_size,
1951 PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED,
1952 phys_ram_fd, 0);
1953 if (phys_ram_base == MAP_FAILED) {
1954 fprintf(stderr, "Could not map physical memory\n");
1955 exit(1);
1956 }
1957 }
1958 #endif
1959
1960 /* we always create the cdrom drive, even if no disk is there */
1961 if (has_cdrom) {
1962 bs_table[2] = bdrv_new("cdrom");
1963 bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
1964 }
1965
1966 /* open the virtual block devices */
1967 for(i = 0; i < MAX_DISKS; i++) {
1968 if (hd_filename[i]) {
1969 if (!bs_table[i]) {
1970 char buf[64];
1971 snprintf(buf, sizeof(buf), "hd%c", i + 'a');
1972 bs_table[i] = bdrv_new(buf);
1973 }
1974 if (bdrv_open(bs_table[i], hd_filename[i], snapshot) < 0) {
1975 fprintf(stderr, "qemu: could not open hard disk image '%s\n",
1976 hd_filename[i]);
1977 exit(1);
1978 }
1979 if (i == 0 && cyls != 0)
1980 bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs);
1981 }
1982 }
1983
1984 /* we always create at least one floppy disk */
1985 fd_table[0] = bdrv_new("fda");
1986 bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY);
1987
1988 for(i = 0; i < MAX_FD; i++) {
1989 if (fd_filename[i]) {
1990 if (!fd_table[i]) {
1991 char buf[64];
1992 snprintf(buf, sizeof(buf), "fd%c", i + 'a');
1993 fd_table[i] = bdrv_new(buf);
1994 bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY);
1995 }
1996 if (fd_filename[i] != '\0') {
1997 if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) {
1998 fprintf(stderr, "qemu: could not open floppy disk image '%s\n",
1999 fd_filename[i]);
2000 exit(1);
2001 }
2002 }
2003 }
2004 }
2005
2006 init_timers();
2007
2008 /* init CPU state */
2009 env = cpu_init();
2010 global_env = env;
2011 cpu_single_env = env;
2012
2013 register_savevm("timer", 0, 1, timer_save, timer_load, env);
2014 register_savevm("cpu", 0, 1, cpu_save, cpu_load, env);
2015 register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
2016
2017 init_ioports();
2018 cpu_calibrate_ticks();
2019
2020 /* terminal init */
2021 if (nographic) {
2022 dumb_display_init(ds);
2023 } else {
2024 #ifdef CONFIG_SDL
2025 sdl_display_init(ds);
2026 #else
2027 dumb_display_init(ds);
2028 #endif
2029 }
2030
2031 #if defined(TARGET_I386)
2032 pc_init(ram_size, vga_ram_size, boot_device,
2033 ds, fd_filename, snapshot,
2034 kernel_filename, kernel_cmdline, initrd_filename);
2035 #elif defined(TARGET_PPC)
2036 ppc_init();
2037 #endif
2038
2039 /* launched after the device init so that it can display or not a
2040 banner */
2041 monitor_init();
2042
2043 /* setup cpu signal handlers for MMU / self modifying code handling */
2044 #if !defined(CONFIG_SOFTMMU)
2045
2046 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2047 {
2048 stack_t stk;
2049 signal_stack = malloc(SIGNAL_STACK_SIZE);
2050 stk.ss_sp = signal_stack;
2051 stk.ss_size = SIGNAL_STACK_SIZE;
2052 stk.ss_flags = 0;
2053
2054 if (sigaltstack(&stk, NULL) < 0) {
2055 perror("sigaltstack");
2056 exit(1);
2057 }
2058 }
2059 #endif
2060 {
2061 struct sigaction act;
2062
2063 sigfillset(&act.sa_mask);
2064 act.sa_flags = SA_SIGINFO;
2065 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2066 act.sa_flags |= SA_ONSTACK;
2067 #endif
2068 act.sa_sigaction = host_segv_handler;
2069 sigaction(SIGSEGV, &act, NULL);
2070 sigaction(SIGBUS, &act, NULL);
2071 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2072 sigaction(SIGFPE, &act, NULL);
2073 #endif
2074 }
2075 #endif
2076
2077 #ifndef _WIN32
2078 {
2079 struct sigaction act;
2080 sigfillset(&act.sa_mask);
2081 act.sa_flags = 0;
2082 act.sa_handler = SIG_IGN;
2083 sigaction(SIGPIPE, &act, NULL);
2084 }
2085 #endif
2086
2087 gui_timer = qemu_new_timer(rt_clock, gui_update, NULL);
2088 qemu_mod_timer(gui_timer, qemu_get_clock(rt_clock));
2089
2090 #ifdef CONFIG_GDBSTUB
2091 if (use_gdbstub) {
2092 if (gdbserver_start(gdbstub_port) < 0) {
2093 fprintf(stderr, "Could not open gdbserver socket on port %d\n",
2094 gdbstub_port);
2095 exit(1);
2096 } else {
2097 printf("Waiting gdb connection on port %d\n", gdbstub_port);
2098 }
2099 } else
2100 #endif
2101 {
2102 vm_start();
2103 }
2104 term_init();
2105 main_loop();
2106 return 0;
2107 }
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