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Added readonly flag to -drive command
[qemu/scottt.git] / vl.c
blob613cbdb63f0fce0f22936b97f37feb6a53938b0f
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 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 <unistd.h>
25 #include <fcntl.h>
26 #include <signal.h>
27 #include <time.h>
28 #include <errno.h>
29 #include <sys/time.h>
30 #include <zlib.h>
31
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
34
35 #ifndef _WIN32
36 #include <libgen.h>
37 #include <pwd.h>
38 #include <sys/times.h>
39 #include <sys/wait.h>
40 #include <termios.h>
41 #include <sys/mman.h>
42 #include <sys/ioctl.h>
43 #include <sys/resource.h>
44 #include <sys/socket.h>
45 #include <netinet/in.h>
46 #include <net/if.h>
47 #include <arpa/inet.h>
48 #include <dirent.h>
49 #include <netdb.h>
50 #include <sys/select.h>
51 #ifdef CONFIG_BSD
52 #include <sys/stat.h>
53 #if defined(__FreeBSD__) || defined(__DragonFly__)
54 #include <libutil.h>
55 #else
56 #include <util.h>
57 #endif
58 #elif defined (__GLIBC__) && defined (__FreeBSD_kernel__)
59 #include <freebsd/stdlib.h>
60 #else
61 #ifdef __linux__
62 #include <pty.h>
63 #include <malloc.h>
64 #include <linux/rtc.h>
65 #include <sys/prctl.h>
66
67 /* For the benefit of older linux systems which don't supply it,
68 we use a local copy of hpet.h. */
69 /* #include <linux/hpet.h> */
70 #include "hpet.h"
71
72 #include <linux/ppdev.h>
73 #include <linux/parport.h>
74 #endif
75 #ifdef __sun__
76 #include <sys/stat.h>
77 #include <sys/ethernet.h>
78 #include <sys/sockio.h>
79 #include <netinet/arp.h>
80 #include <netinet/in.h>
81 #include <netinet/in_systm.h>
82 #include <netinet/ip.h>
83 #include <netinet/ip_icmp.h> // must come after ip.h
84 #include <netinet/udp.h>
85 #include <netinet/tcp.h>
86 #include <net/if.h>
87 #include <syslog.h>
88 #include <stropts.h>
89 /* See MySQL bug #7156 (http://bugs.mysql.com/bug.php?id=7156) for
90 discussion about Solaris header problems */
91 extern int madvise(caddr_t, size_t, int);
92 #endif
93 #endif
94 #endif
95
96 #if defined(__OpenBSD__)
97 #include <util.h>
98 #endif
99
100 #if defined(CONFIG_VDE)
101 #include <libvdeplug.h>
102 #endif
103
104 #ifdef _WIN32
105 #include <windows.h>
106 #include <mmsystem.h>
107 #endif
108
109 #ifdef CONFIG_SDL
110 #if defined(__APPLE__) || defined(main)
111 #include <SDL.h>
112 int qemu_main(int argc, char **argv, char **envp);
113 int main(int argc, char **argv)
114 {
115 return qemu_main(argc, argv, NULL);
116 }
117 #undef main
118 #define main qemu_main
119 #endif
120 #endif /* CONFIG_SDL */
121
122 #ifdef CONFIG_COCOA
123 #undef main
124 #define main qemu_main
125 #endif /* CONFIG_COCOA */
126
127 #include "hw/hw.h"
128 #include "hw/boards.h"
129 #include "hw/usb.h"
130 #include "hw/pcmcia.h"
131 #include "hw/pc.h"
132 #include "hw/audiodev.h"
133 #include "hw/isa.h"
134 #include "hw/baum.h"
135 #include "hw/bt.h"
136 #include "hw/watchdog.h"
137 #include "hw/smbios.h"
138 #include "hw/xen.h"
139 #include "hw/qdev.h"
140 #include "hw/loader.h"
141 #include "bt-host.h"
142 #include "net.h"
143 #include "monitor.h"
144 #include "console.h"
145 #include "sysemu.h"
146 #include "gdbstub.h"
147 #include "qemu-timer.h"
148 #include "qemu-char.h"
149 #include "cache-utils.h"
150 #include "block.h"
151 #include "dma.h"
152 #include "audio/audio.h"
153 #include "migration.h"
154 #include "kvm.h"
155 #include "balloon.h"
156 #include "qemu-option.h"
157 #include "qemu-config.h"
158
159 #include "disas.h"
160
161 #include "exec-all.h"
162
163 #include "qemu_socket.h"
164
165 #include "slirp/libslirp.h"
166
167 #include "qemu-queue.h"
168
169 //#define DEBUG_NET
170 //#define DEBUG_SLIRP
171
172 #define DEFAULT_RAM_SIZE 128
173
174 /* Maximum number of monitor devices */
175 #define MAX_MONITOR_DEVICES 10
176
177 static const char *data_dir;
178 const char *bios_name = NULL;
179 /* Note: drives_table[MAX_DRIVES] is a dummy block driver if none available
180 to store the VM snapshots */
181 struct drivelist drives = QTAILQ_HEAD_INITIALIZER(drives);
182 struct driveoptlist driveopts = QTAILQ_HEAD_INITIALIZER(driveopts);
183 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
184 static DisplayState *display_state;
185 DisplayType display_type = DT_DEFAULT;
186 const char* keyboard_layout = NULL;
187 ram_addr_t ram_size;
188 int nb_nics;
189 NICInfo nd_table[MAX_NICS];
190 int vm_running;
191 int autostart;
192 static int rtc_utc = 1;
193 static int rtc_date_offset = -1; /* -1 means no change */
194 QEMUClock *rtc_clock;
195 int vga_interface_type = VGA_CIRRUS;
196 #ifdef TARGET_SPARC
197 int graphic_width = 1024;
198 int graphic_height = 768;
199 int graphic_depth = 8;
200 #else
201 int graphic_width = 800;
202 int graphic_height = 600;
203 int graphic_depth = 15;
204 #endif
205 static int full_screen = 0;
206 #ifdef CONFIG_SDL
207 static int no_frame = 0;
208 #endif
209 int no_quit = 0;
210 CharDriverState *serial_hds[MAX_SERIAL_PORTS];
211 CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
212 CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
213 #ifdef TARGET_I386
214 int win2k_install_hack = 0;
215 int rtc_td_hack = 0;
216 #endif
217 int usb_enabled = 0;
218 int singlestep = 0;
219 int smp_cpus = 1;
220 int max_cpus = 0;
221 int smp_cores = 1;
222 int smp_threads = 1;
223 const char *vnc_display;
224 int acpi_enabled = 1;
225 int no_hpet = 0;
226 int fd_bootchk = 1;
227 int no_reboot = 0;
228 int no_shutdown = 0;
229 int cursor_hide = 1;
230 int graphic_rotate = 0;
231 uint8_t irq0override = 1;
232 #ifndef _WIN32
233 int daemonize = 0;
234 #endif
235 const char *watchdog;
236 const char *option_rom[MAX_OPTION_ROMS];
237 int nb_option_roms;
238 int semihosting_enabled = 0;
239 #ifdef TARGET_ARM
240 int old_param = 0;
241 #endif
242 const char *qemu_name;
243 int alt_grab = 0;
244 int ctrl_grab = 0;
245 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
246 unsigned int nb_prom_envs = 0;
247 const char *prom_envs[MAX_PROM_ENVS];
248 #endif
249 int boot_menu;
250
251 int nb_numa_nodes;
252 uint64_t node_mem[MAX_NODES];
253 uint64_t node_cpumask[MAX_NODES];
254
255 static CPUState *cur_cpu;
256 static CPUState *next_cpu;
257 static int timer_alarm_pending = 1;
258 /* Conversion factor from emulated instructions to virtual clock ticks. */
259 static int icount_time_shift;
260 /* Arbitrarily pick 1MIPS as the minimum allowable speed. */
261 #define MAX_ICOUNT_SHIFT 10
262 /* Compensate for varying guest execution speed. */
263 static int64_t qemu_icount_bias;
264 static QEMUTimer *icount_rt_timer;
265 static QEMUTimer *icount_vm_timer;
266 static QEMUTimer *nographic_timer;
267
268 uint8_t qemu_uuid[16];
269
270 static QEMUBootSetHandler *boot_set_handler;
271 static void *boot_set_opaque;
272
273 /***********************************************************/
274 /* x86 ISA bus support */
275
276 target_phys_addr_t isa_mem_base = 0;
277 PicState2 *isa_pic;
278
279 /***********************************************************/
280 void hw_error(const char *fmt, ...)
281 {
282 va_list ap;
283 CPUState *env;
284
285 va_start(ap, fmt);
286 fprintf(stderr, "qemu: hardware error: ");
287 vfprintf(stderr, fmt, ap);
288 fprintf(stderr, "\n");
289 for(env = first_cpu; env != NULL; env = env->next_cpu) {
290 fprintf(stderr, "CPU #%d:\n", env->cpu_index);
291 #ifdef TARGET_I386
292 cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU);
293 #else
294 cpu_dump_state(env, stderr, fprintf, 0);
295 #endif
296 }
297 va_end(ap);
298 abort();
299 }
300
301 static void set_proc_name(const char *s)
302 {
303 #if defined(__linux__) && defined(PR_SET_NAME)
304 char name[16];
305 if (!s)
306 return;
307 name[sizeof(name) - 1] = 0;
308 strncpy(name, s, sizeof(name));
309 /* Could rewrite argv[0] too, but that's a bit more complicated.
310 This simple way is enough for `top'. */
311 prctl(PR_SET_NAME, name);
312 #endif
313 }
314
315 /***************/
316 /* ballooning */
317
318 static QEMUBalloonEvent *qemu_balloon_event;
319 void *qemu_balloon_event_opaque;
320
321 void qemu_add_balloon_handler(QEMUBalloonEvent *func, void *opaque)
322 {
323 qemu_balloon_event = func;
324 qemu_balloon_event_opaque = opaque;
325 }
326
327 void qemu_balloon(ram_addr_t target)
328 {
329 if (qemu_balloon_event)
330 qemu_balloon_event(qemu_balloon_event_opaque, target);
331 }
332
333 ram_addr_t qemu_balloon_status(void)
334 {
335 if (qemu_balloon_event)
336 return qemu_balloon_event(qemu_balloon_event_opaque, 0);
337 return 0;
338 }
339
340 /***********************************************************/
341 /* keyboard/mouse */
342
343 static QEMUPutKBDEvent *qemu_put_kbd_event;
344 static void *qemu_put_kbd_event_opaque;
345 static QEMUPutMouseEntry *qemu_put_mouse_event_head;
346 static QEMUPutMouseEntry *qemu_put_mouse_event_current;
347
348 void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
349 {
350 qemu_put_kbd_event_opaque = opaque;
351 qemu_put_kbd_event = func;
352 }
353
354 QEMUPutMouseEntry *qemu_add_mouse_event_handler(QEMUPutMouseEvent *func,
355 void *opaque, int absolute,
356 const char *name)
357 {
358 QEMUPutMouseEntry *s, *cursor;
359
360 s = qemu_mallocz(sizeof(QEMUPutMouseEntry));
361
362 s->qemu_put_mouse_event = func;
363 s->qemu_put_mouse_event_opaque = opaque;
364 s->qemu_put_mouse_event_absolute = absolute;
365 s->qemu_put_mouse_event_name = qemu_strdup(name);
366 s->next = NULL;
367
368 if (!qemu_put_mouse_event_head) {
369 qemu_put_mouse_event_head = qemu_put_mouse_event_current = s;
370 return s;
371 }
372
373 cursor = qemu_put_mouse_event_head;
374 while (cursor->next != NULL)
375 cursor = cursor->next;
376
377 cursor->next = s;
378 qemu_put_mouse_event_current = s;
379
380 return s;
381 }
382
383 void qemu_remove_mouse_event_handler(QEMUPutMouseEntry *entry)
384 {
385 QEMUPutMouseEntry *prev = NULL, *cursor;
386
387 if (!qemu_put_mouse_event_head || entry == NULL)
388 return;
389
390 cursor = qemu_put_mouse_event_head;
391 while (cursor != NULL && cursor != entry) {
392 prev = cursor;
393 cursor = cursor->next;
394 }
395
396 if (cursor == NULL) // does not exist or list empty
397 return;
398 else if (prev == NULL) { // entry is head
399 qemu_put_mouse_event_head = cursor->next;
400 if (qemu_put_mouse_event_current == entry)
401 qemu_put_mouse_event_current = cursor->next;
402 qemu_free(entry->qemu_put_mouse_event_name);
403 qemu_free(entry);
404 return;
405 }
406
407 prev->next = entry->next;
408
409 if (qemu_put_mouse_event_current == entry)
410 qemu_put_mouse_event_current = prev;
411
412 qemu_free(entry->qemu_put_mouse_event_name);
413 qemu_free(entry);
414 }
415
416 void kbd_put_keycode(int keycode)
417 {
418 if (qemu_put_kbd_event) {
419 qemu_put_kbd_event(qemu_put_kbd_event_opaque, keycode);
420 }
421 }
422
423 void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
424 {
425 QEMUPutMouseEvent *mouse_event;
426 void *mouse_event_opaque;
427 int width;
428
429 if (!qemu_put_mouse_event_current) {
430 return;
431 }
432
433 mouse_event =
434 qemu_put_mouse_event_current->qemu_put_mouse_event;
435 mouse_event_opaque =
436 qemu_put_mouse_event_current->qemu_put_mouse_event_opaque;
437
438 if (mouse_event) {
439 if (graphic_rotate) {
440 if (qemu_put_mouse_event_current->qemu_put_mouse_event_absolute)
441 width = 0x7fff;
442 else
443 width = graphic_width - 1;
444 mouse_event(mouse_event_opaque,
445 width - dy, dx, dz, buttons_state);
446 } else
447 mouse_event(mouse_event_opaque,
448 dx, dy, dz, buttons_state);
449 }
450 }
451
452 int kbd_mouse_is_absolute(void)
453 {
454 if (!qemu_put_mouse_event_current)
455 return 0;
456
457 return qemu_put_mouse_event_current->qemu_put_mouse_event_absolute;
458 }
459
460 void do_info_mice(Monitor *mon)
461 {
462 QEMUPutMouseEntry *cursor;
463 int index = 0;
464
465 if (!qemu_put_mouse_event_head) {
466 monitor_printf(mon, "No mouse devices connected\n");
467 return;
468 }
469
470 monitor_printf(mon, "Mouse devices available:\n");
471 cursor = qemu_put_mouse_event_head;
472 while (cursor != NULL) {
473 monitor_printf(mon, "%c Mouse #%d: %s\n",
474 (cursor == qemu_put_mouse_event_current ? '*' : ' '),
475 index, cursor->qemu_put_mouse_event_name);
476 index++;
477 cursor = cursor->next;
478 }
479 }
480
481 void do_mouse_set(Monitor *mon, const QDict *qdict)
482 {
483 QEMUPutMouseEntry *cursor;
484 int i = 0;
485 int index = qdict_get_int(qdict, "index");
486
487 if (!qemu_put_mouse_event_head) {
488 monitor_printf(mon, "No mouse devices connected\n");
489 return;
490 }
491
492 cursor = qemu_put_mouse_event_head;
493 while (cursor != NULL && index != i) {
494 i++;
495 cursor = cursor->next;
496 }
497
498 if (cursor != NULL)
499 qemu_put_mouse_event_current = cursor;
500 else
501 monitor_printf(mon, "Mouse at given index not found\n");
502 }
503
504 /* compute with 96 bit intermediate result: (a*b)/c */
505 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
506 {
507 union {
508 uint64_t ll;
509 struct {
510 #ifdef HOST_WORDS_BIGENDIAN
511 uint32_t high, low;
512 #else
513 uint32_t low, high;
514 #endif
515 } l;
516 } u, res;
517 uint64_t rl, rh;
518
519 u.ll = a;
520 rl = (uint64_t)u.l.low * (uint64_t)b;
521 rh = (uint64_t)u.l.high * (uint64_t)b;
522 rh += (rl >> 32);
523 res.l.high = rh / c;
524 res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
525 return res.ll;
526 }
527
528 /***********************************************************/
529 /* real time host monotonic timer */
530
531 static int64_t get_clock_realtime(void)
532 {
533 struct timeval tv;
534
535 gettimeofday(&tv, NULL);
536 return tv.tv_sec * 1000000000LL + (tv.tv_usec * 1000);
537 }
538
539 #ifdef WIN32
540
541 static int64_t clock_freq;
542
543 static void init_get_clock(void)
544 {
545 LARGE_INTEGER freq;
546 int ret;
547 ret = QueryPerformanceFrequency(&freq);
548 if (ret == 0) {
549 fprintf(stderr, "Could not calibrate ticks\n");
550 exit(1);
551 }
552 clock_freq = freq.QuadPart;
553 }
554
555 static int64_t get_clock(void)
556 {
557 LARGE_INTEGER ti;
558 QueryPerformanceCounter(&ti);
559 return muldiv64(ti.QuadPart, get_ticks_per_sec(), clock_freq);
560 }
561
562 #else
563
564 static int use_rt_clock;
565
566 static void init_get_clock(void)
567 {
568 use_rt_clock = 0;
569 #if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD_version >= 500000) \
570 || defined(__DragonFly__)
571 {
572 struct timespec ts;
573 if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) {
574 use_rt_clock = 1;
575 }
576 }
577 #endif
578 }
579
580 static int64_t get_clock(void)
581 {
582 #if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD_version >= 500000) \
583 || defined(__DragonFly__)
584 if (use_rt_clock) {
585 struct timespec ts;
586 clock_gettime(CLOCK_MONOTONIC, &ts);
587 return ts.tv_sec * 1000000000LL + ts.tv_nsec;
588 } else
589 #endif
590 {
591 /* XXX: using gettimeofday leads to problems if the date
592 changes, so it should be avoided. */
593 return get_clock_realtime();
594 }
595 }
596 #endif
597
598 /* Return the virtual CPU time, based on the instruction counter. */
599 static int64_t cpu_get_icount(void)
600 {
601 int64_t icount;
602 CPUState *env = cpu_single_env;;
603 icount = qemu_icount;
604 if (env) {
605 if (!can_do_io(env))
606 fprintf(stderr, "Bad clock read\n");
607 icount -= (env->icount_decr.u16.low + env->icount_extra);
608 }
609 return qemu_icount_bias + (icount << icount_time_shift);
610 }
611
612 /***********************************************************/
613 /* guest cycle counter */
614
615 typedef struct TimersState {
616 int64_t cpu_ticks_prev;
617 int64_t cpu_ticks_offset;
618 int64_t cpu_clock_offset;
619 int32_t cpu_ticks_enabled;
620 int64_t dummy;
621 } TimersState;
622
623 TimersState timers_state;
624
625 /* return the host CPU cycle counter and handle stop/restart */
626 int64_t cpu_get_ticks(void)
627 {
628 if (use_icount) {
629 return cpu_get_icount();
630 }
631 if (!timers_state.cpu_ticks_enabled) {
632 return timers_state.cpu_ticks_offset;
633 } else {
634 int64_t ticks;
635 ticks = cpu_get_real_ticks();
636 if (timers_state.cpu_ticks_prev > ticks) {
637 /* Note: non increasing ticks may happen if the host uses
638 software suspend */
639 timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks;
640 }
641 timers_state.cpu_ticks_prev = ticks;
642 return ticks + timers_state.cpu_ticks_offset;
643 }
644 }
645
646 /* return the host CPU monotonic timer and handle stop/restart */
647 static int64_t cpu_get_clock(void)
648 {
649 int64_t ti;
650 if (!timers_state.cpu_ticks_enabled) {
651 return timers_state.cpu_clock_offset;
652 } else {
653 ti = get_clock();
654 return ti + timers_state.cpu_clock_offset;
655 }
656 }
657
658 /* enable cpu_get_ticks() */
659 void cpu_enable_ticks(void)
660 {
661 if (!timers_state.cpu_ticks_enabled) {
662 timers_state.cpu_ticks_offset -= cpu_get_real_ticks();
663 timers_state.cpu_clock_offset -= get_clock();
664 timers_state.cpu_ticks_enabled = 1;
665 }
666 }
667
668 /* disable cpu_get_ticks() : the clock is stopped. You must not call
669 cpu_get_ticks() after that. */
670 void cpu_disable_ticks(void)
671 {
672 if (timers_state.cpu_ticks_enabled) {
673 timers_state.cpu_ticks_offset = cpu_get_ticks();
674 timers_state.cpu_clock_offset = cpu_get_clock();
675 timers_state.cpu_ticks_enabled = 0;
676 }
677 }
678
679 /***********************************************************/
680 /* timers */
681
682 #define QEMU_CLOCK_REALTIME 0
683 #define QEMU_CLOCK_VIRTUAL 1
684 #define QEMU_CLOCK_HOST 2
685
686 struct QEMUClock {
687 int type;
688 /* XXX: add frequency */
689 };
690
691 struct QEMUTimer {
692 QEMUClock *clock;
693 int64_t expire_time;
694 QEMUTimerCB *cb;
695 void *opaque;
696 struct QEMUTimer *next;
697 };
698
699 struct qemu_alarm_timer {
700 char const *name;
701 unsigned int flags;
702
703 int (*start)(struct qemu_alarm_timer *t);
704 void (*stop)(struct qemu_alarm_timer *t);
705 void (*rearm)(struct qemu_alarm_timer *t);
706 void *priv;
707 };
708
709 #define ALARM_FLAG_DYNTICKS 0x1
710 #define ALARM_FLAG_EXPIRED 0x2
711
712 static inline int alarm_has_dynticks(struct qemu_alarm_timer *t)
713 {
714 return t && (t->flags & ALARM_FLAG_DYNTICKS);
715 }
716
717 static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t)
718 {
719 if (!alarm_has_dynticks(t))
720 return;
721
722 t->rearm(t);
723 }
724
725 /* TODO: MIN_TIMER_REARM_US should be optimized */
726 #define MIN_TIMER_REARM_US 250
727
728 static struct qemu_alarm_timer *alarm_timer;
729
730 #ifdef _WIN32
731
732 struct qemu_alarm_win32 {
733 MMRESULT timerId;
734 unsigned int period;
735 } alarm_win32_data = {0, -1};
736
737 static int win32_start_timer(struct qemu_alarm_timer *t);
738 static void win32_stop_timer(struct qemu_alarm_timer *t);
739 static void win32_rearm_timer(struct qemu_alarm_timer *t);
740
741 #else
742
743 static int unix_start_timer(struct qemu_alarm_timer *t);
744 static void unix_stop_timer(struct qemu_alarm_timer *t);
745
746 #ifdef __linux__
747
748 static int dynticks_start_timer(struct qemu_alarm_timer *t);
749 static void dynticks_stop_timer(struct qemu_alarm_timer *t);
750 static void dynticks_rearm_timer(struct qemu_alarm_timer *t);
751
752 static int hpet_start_timer(struct qemu_alarm_timer *t);
753 static void hpet_stop_timer(struct qemu_alarm_timer *t);
754
755 static int rtc_start_timer(struct qemu_alarm_timer *t);
756 static void rtc_stop_timer(struct qemu_alarm_timer *t);
757
758 #endif /* __linux__ */
759
760 #endif /* _WIN32 */
761
762 /* Correlation between real and virtual time is always going to be
763 fairly approximate, so ignore small variation.
764 When the guest is idle real and virtual time will be aligned in
765 the IO wait loop. */
766 #define ICOUNT_WOBBLE (get_ticks_per_sec() / 10)
767
768 static void icount_adjust(void)
769 {
770 int64_t cur_time;
771 int64_t cur_icount;
772 int64_t delta;
773 static int64_t last_delta;
774 /* If the VM is not running, then do nothing. */
775 if (!vm_running)
776 return;
777
778 cur_time = cpu_get_clock();
779 cur_icount = qemu_get_clock(vm_clock);
780 delta = cur_icount - cur_time;
781 /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */
782 if (delta > 0
783 && last_delta + ICOUNT_WOBBLE < delta * 2
784 && icount_time_shift > 0) {
785 /* The guest is getting too far ahead. Slow time down. */
786 icount_time_shift--;
787 }
788 if (delta < 0
789 && last_delta - ICOUNT_WOBBLE > delta * 2
790 && icount_time_shift < MAX_ICOUNT_SHIFT) {
791 /* The guest is getting too far behind. Speed time up. */
792 icount_time_shift++;
793 }
794 last_delta = delta;
795 qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift);
796 }
797
798 static void icount_adjust_rt(void * opaque)
799 {
800 qemu_mod_timer(icount_rt_timer,
801 qemu_get_clock(rt_clock) + 1000);
802 icount_adjust();
803 }
804
805 static void icount_adjust_vm(void * opaque)
806 {
807 qemu_mod_timer(icount_vm_timer,
808 qemu_get_clock(vm_clock) + get_ticks_per_sec() / 10);
809 icount_adjust();
810 }
811
812 static void init_icount_adjust(void)
813 {
814 /* Have both realtime and virtual time triggers for speed adjustment.
815 The realtime trigger catches emulated time passing too slowly,
816 the virtual time trigger catches emulated time passing too fast.
817 Realtime triggers occur even when idle, so use them less frequently
818 than VM triggers. */
819 icount_rt_timer = qemu_new_timer(rt_clock, icount_adjust_rt, NULL);
820 qemu_mod_timer(icount_rt_timer,
821 qemu_get_clock(rt_clock) + 1000);
822 icount_vm_timer = qemu_new_timer(vm_clock, icount_adjust_vm, NULL);
823 qemu_mod_timer(icount_vm_timer,
824 qemu_get_clock(vm_clock) + get_ticks_per_sec() / 10);
825 }
826
827 static struct qemu_alarm_timer alarm_timers[] = {
828 #ifndef _WIN32
829 #ifdef __linux__
830 {"dynticks", ALARM_FLAG_DYNTICKS, dynticks_start_timer,
831 dynticks_stop_timer, dynticks_rearm_timer, NULL},
832 /* HPET - if available - is preferred */
833 {"hpet", 0, hpet_start_timer, hpet_stop_timer, NULL, NULL},
834 /* ...otherwise try RTC */
835 {"rtc", 0, rtc_start_timer, rtc_stop_timer, NULL, NULL},
836 #endif
837 {"unix", 0, unix_start_timer, unix_stop_timer, NULL, NULL},
838 #else
839 {"dynticks", ALARM_FLAG_DYNTICKS, win32_start_timer,
840 win32_stop_timer, win32_rearm_timer, &alarm_win32_data},
841 {"win32", 0, win32_start_timer,
842 win32_stop_timer, NULL, &alarm_win32_data},
843 #endif
844 {NULL, }
845 };
846
847 static void show_available_alarms(void)
848 {
849 int i;
850
851 printf("Available alarm timers, in order of precedence:\n");
852 for (i = 0; alarm_timers[i].name; i++)
853 printf("%s\n", alarm_timers[i].name);
854 }
855
856 static void configure_alarms(char const *opt)
857 {
858 int i;
859 int cur = 0;
860 int count = ARRAY_SIZE(alarm_timers) - 1;
861 char *arg;
862 char *name;
863 struct qemu_alarm_timer tmp;
864
865 if (!strcmp(opt, "?")) {
866 show_available_alarms();
867 exit(0);
868 }
869
870 arg = qemu_strdup(opt);
871
872 /* Reorder the array */
873 name = strtok(arg, ",");
874 while (name) {
875 for (i = 0; i < count && alarm_timers[i].name; i++) {
876 if (!strcmp(alarm_timers[i].name, name))
877 break;
878 }
879
880 if (i == count) {
881 fprintf(stderr, "Unknown clock %s\n", name);
882 goto next;
883 }
884
885 if (i < cur)
886 /* Ignore */
887 goto next;
888
889 /* Swap */
890 tmp = alarm_timers[i];
891 alarm_timers[i] = alarm_timers[cur];
892 alarm_timers[cur] = tmp;
893
894 cur++;
895 next:
896 name = strtok(NULL, ",");
897 }
898
899 qemu_free(arg);
900
901 if (cur) {
902 /* Disable remaining timers */
903 for (i = cur; i < count; i++)
904 alarm_timers[i].name = NULL;
905 } else {
906 show_available_alarms();
907 exit(1);
908 }
909 }
910
911 #define QEMU_NUM_CLOCKS 3
912
913 QEMUClock *rt_clock;
914 QEMUClock *vm_clock;
915 QEMUClock *host_clock;
916
917 static QEMUTimer *active_timers[QEMU_NUM_CLOCKS];
918
919 static QEMUClock *qemu_new_clock(int type)
920 {
921 QEMUClock *clock;
922 clock = qemu_mallocz(sizeof(QEMUClock));
923 clock->type = type;
924 return clock;
925 }
926
927 QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
928 {
929 QEMUTimer *ts;
930
931 ts = qemu_mallocz(sizeof(QEMUTimer));
932 ts->clock = clock;
933 ts->cb = cb;
934 ts->opaque = opaque;
935 return ts;
936 }
937
938 void qemu_free_timer(QEMUTimer *ts)
939 {
940 qemu_free(ts);
941 }
942
943 /* stop a timer, but do not dealloc it */
944 void qemu_del_timer(QEMUTimer *ts)
945 {
946 QEMUTimer **pt, *t;
947
948 /* NOTE: this code must be signal safe because
949 qemu_timer_expired() can be called from a signal. */
950 pt = &active_timers[ts->clock->type];
951 for(;;) {
952 t = *pt;
953 if (!t)
954 break;
955 if (t == ts) {
956 *pt = t->next;
957 break;
958 }
959 pt = &t->next;
960 }
961 }
962
963 /* modify the current timer so that it will be fired when current_time
964 >= expire_time. The corresponding callback will be called. */
965 void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
966 {
967 QEMUTimer **pt, *t;
968
969 qemu_del_timer(ts);
970
971 /* add the timer in the sorted list */
972 /* NOTE: this code must be signal safe because
973 qemu_timer_expired() can be called from a signal. */
974 pt = &active_timers[ts->clock->type];
975 for(;;) {
976 t = *pt;
977 if (!t)
978 break;
979 if (t->expire_time > expire_time)
980 break;
981 pt = &t->next;
982 }
983 ts->expire_time = expire_time;
984 ts->next = *pt;
985 *pt = ts;
986
987 /* Rearm if necessary */
988 if (pt == &active_timers[ts->clock->type]) {
989 if ((alarm_timer->flags & ALARM_FLAG_EXPIRED) == 0) {
990 qemu_rearm_alarm_timer(alarm_timer);
991 }
992 /* Interrupt execution to force deadline recalculation. */
993 if (use_icount)
994 qemu_notify_event();
995 }
996 }
997
998 int qemu_timer_pending(QEMUTimer *ts)
999 {
1000 QEMUTimer *t;
1001 for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
1002 if (t == ts)
1003 return 1;
1004 }
1005 return 0;
1006 }
1007
1008 int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
1009 {
1010 if (!timer_head)
1011 return 0;
1012 return (timer_head->expire_time <= current_time);
1013 }
1014
1015 static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
1016 {
1017 QEMUTimer *ts;
1018
1019 for(;;) {
1020 ts = *ptimer_head;
1021 if (!ts || ts->expire_time > current_time)
1022 break;
1023 /* remove timer from the list before calling the callback */
1024 *ptimer_head = ts->next;
1025 ts->next = NULL;
1026
1027 /* run the callback (the timer list can be modified) */
1028 ts->cb(ts->opaque);
1029 }
1030 }
1031
1032 int64_t qemu_get_clock(QEMUClock *clock)
1033 {
1034 switch(clock->type) {
1035 case QEMU_CLOCK_REALTIME:
1036 return get_clock() / 1000000;
1037 default:
1038 case QEMU_CLOCK_VIRTUAL:
1039 if (use_icount) {
1040 return cpu_get_icount();
1041 } else {
1042 return cpu_get_clock();
1043 }
1044 case QEMU_CLOCK_HOST:
1045 return get_clock_realtime();
1046 }
1047 }
1048
1049 static void init_clocks(void)
1050 {
1051 init_get_clock();
1052 rt_clock = qemu_new_clock(QEMU_CLOCK_REALTIME);
1053 vm_clock = qemu_new_clock(QEMU_CLOCK_VIRTUAL);
1054 host_clock = qemu_new_clock(QEMU_CLOCK_HOST);
1055
1056 rtc_clock = host_clock;
1057 }
1058
1059 /* save a timer */
1060 void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
1061 {
1062 uint64_t expire_time;
1063
1064 if (qemu_timer_pending(ts)) {
1065 expire_time = ts->expire_time;
1066 } else {
1067 expire_time = -1;
1068 }
1069 qemu_put_be64(f, expire_time);
1070 }
1071
1072 void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
1073 {
1074 uint64_t expire_time;
1075
1076 expire_time = qemu_get_be64(f);
1077 if (expire_time != -1) {
1078 qemu_mod_timer(ts, expire_time);
1079 } else {
1080 qemu_del_timer(ts);
1081 }
1082 }
1083
1084 static const VMStateDescription vmstate_timers = {
1085 .name = "timer",
1086 .version_id = 2,
1087 .minimum_version_id = 1,
1088 .minimum_version_id_old = 1,
1089 .fields = (VMStateField []) {
1090 VMSTATE_INT64(cpu_ticks_offset, TimersState),
1091 VMSTATE_INT64(dummy, TimersState),
1092 VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2),
1093 VMSTATE_END_OF_LIST()
1094 }
1095 };
1096
1097 static void qemu_event_increment(void);
1098
1099 #ifdef _WIN32
1100 static void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg,
1101 DWORD_PTR dwUser, DWORD_PTR dw1,
1102 DWORD_PTR dw2)
1103 #else
1104 static void host_alarm_handler(int host_signum)
1105 #endif
1106 {
1107 #if 0
1108 #define DISP_FREQ 1000
1109 {
1110 static int64_t delta_min = INT64_MAX;
1111 static int64_t delta_max, delta_cum, last_clock, delta, ti;
1112 static int count;
1113 ti = qemu_get_clock(vm_clock);
1114 if (last_clock != 0) {
1115 delta = ti - last_clock;
1116 if (delta < delta_min)
1117 delta_min = delta;
1118 if (delta > delta_max)
1119 delta_max = delta;
1120 delta_cum += delta;
1121 if (++count == DISP_FREQ) {
1122 printf("timer: min=%" PRId64 " us max=%" PRId64 " us avg=%" PRId64 " us avg_freq=%0.3f Hz\n",
1123 muldiv64(delta_min, 1000000, get_ticks_per_sec()),
1124 muldiv64(delta_max, 1000000, get_ticks_per_sec()),
1125 muldiv64(delta_cum, 1000000 / DISP_FREQ, get_ticks_per_sec()),
1126 (double)get_ticks_per_sec() / ((double)delta_cum / DISP_FREQ));
1127 count = 0;
1128 delta_min = INT64_MAX;
1129 delta_max = 0;
1130 delta_cum = 0;
1131 }
1132 }
1133 last_clock = ti;
1134 }
1135 #endif
1136 if (alarm_has_dynticks(alarm_timer) ||
1137 (!use_icount &&
1138 qemu_timer_expired(active_timers[QEMU_CLOCK_VIRTUAL],
1139 qemu_get_clock(vm_clock))) ||
1140 qemu_timer_expired(active_timers[QEMU_CLOCK_REALTIME],
1141 qemu_get_clock(rt_clock)) ||
1142 qemu_timer_expired(active_timers[QEMU_CLOCK_HOST],
1143 qemu_get_clock(host_clock))) {
1144 qemu_event_increment();
1145 if (alarm_timer) alarm_timer->flags |= ALARM_FLAG_EXPIRED;
1146
1147 #ifndef CONFIG_IOTHREAD
1148 if (next_cpu) {
1149 /* stop the currently executing cpu because a timer occured */
1150 cpu_exit(next_cpu);
1151 }
1152 #endif
1153 timer_alarm_pending = 1;
1154 qemu_notify_event();
1155 }
1156 }
1157
1158 static int64_t qemu_next_deadline(void)
1159 {
1160 /* To avoid problems with overflow limit this to 2^32. */
1161 int64_t delta = INT32_MAX;
1162
1163 if (active_timers[QEMU_CLOCK_VIRTUAL]) {
1164 delta = active_timers[QEMU_CLOCK_VIRTUAL]->expire_time -
1165 qemu_get_clock(vm_clock);
1166 }
1167 if (active_timers[QEMU_CLOCK_HOST]) {
1168 int64_t hdelta = active_timers[QEMU_CLOCK_HOST]->expire_time -
1169 qemu_get_clock(host_clock);
1170 if (hdelta < delta)
1171 delta = hdelta;
1172 }
1173
1174 if (delta < 0)
1175 delta = 0;
1176
1177 return delta;
1178 }
1179
1180 #if defined(__linux__)
1181 static uint64_t qemu_next_deadline_dyntick(void)
1182 {
1183 int64_t delta;
1184 int64_t rtdelta;
1185
1186 if (use_icount)
1187 delta = INT32_MAX;
1188 else
1189 delta = (qemu_next_deadline() + 999) / 1000;
1190
1191 if (active_timers[QEMU_CLOCK_REALTIME]) {
1192 rtdelta = (active_timers[QEMU_CLOCK_REALTIME]->expire_time -
1193 qemu_get_clock(rt_clock))*1000;
1194 if (rtdelta < delta)
1195 delta = rtdelta;
1196 }
1197
1198 if (delta < MIN_TIMER_REARM_US)
1199 delta = MIN_TIMER_REARM_US;
1200
1201 return delta;
1202 }
1203 #endif
1204
1205 #ifndef _WIN32
1206
1207 /* Sets a specific flag */
1208 static int fcntl_setfl(int fd, int flag)
1209 {
1210 int flags;
1211
1212 flags = fcntl(fd, F_GETFL);
1213 if (flags == -1)
1214 return -errno;
1215
1216 if (fcntl(fd, F_SETFL, flags | flag) == -1)
1217 return -errno;
1218
1219 return 0;
1220 }
1221
1222 #if defined(__linux__)
1223
1224 #define RTC_FREQ 1024
1225
1226 static void enable_sigio_timer(int fd)
1227 {
1228 struct sigaction act;
1229
1230 /* timer signal */
1231 sigfillset(&act.sa_mask);
1232 act.sa_flags = 0;
1233 act.sa_handler = host_alarm_handler;
1234
1235 sigaction(SIGIO, &act, NULL);
1236 fcntl_setfl(fd, O_ASYNC);
1237 fcntl(fd, F_SETOWN, getpid());
1238 }
1239
1240 static int hpet_start_timer(struct qemu_alarm_timer *t)
1241 {
1242 struct hpet_info info;
1243 int r, fd;
1244
1245 fd = open("/dev/hpet", O_RDONLY);
1246 if (fd < 0)
1247 return -1;
1248
1249 /* Set frequency */
1250 r = ioctl(fd, HPET_IRQFREQ, RTC_FREQ);
1251 if (r < 0) {
1252 fprintf(stderr, "Could not configure '/dev/hpet' to have a 1024Hz timer. This is not a fatal\n"
1253 "error, but for better emulation accuracy type:\n"
1254 "'echo 1024 > /proc/sys/dev/hpet/max-user-freq' as root.\n");
1255 goto fail;
1256 }
1257
1258 /* Check capabilities */
1259 r = ioctl(fd, HPET_INFO, &info);
1260 if (r < 0)
1261 goto fail;
1262
1263 /* Enable periodic mode */
1264 r = ioctl(fd, HPET_EPI, 0);
1265 if (info.hi_flags && (r < 0))
1266 goto fail;
1267
1268 /* Enable interrupt */
1269 r = ioctl(fd, HPET_IE_ON, 0);
1270 if (r < 0)
1271 goto fail;
1272
1273 enable_sigio_timer(fd);
1274 t->priv = (void *)(long)fd;
1275
1276 return 0;
1277 fail:
1278 close(fd);
1279 return -1;
1280 }
1281
1282 static void hpet_stop_timer(struct qemu_alarm_timer *t)
1283 {
1284 int fd = (long)t->priv;
1285
1286 close(fd);
1287 }
1288
1289 static int rtc_start_timer(struct qemu_alarm_timer *t)
1290 {
1291 int rtc_fd;
1292 unsigned long current_rtc_freq = 0;
1293
1294 TFR(rtc_fd = open("/dev/rtc", O_RDONLY));
1295 if (rtc_fd < 0)
1296 return -1;
1297 ioctl(rtc_fd, RTC_IRQP_READ, &current_rtc_freq);
1298 if (current_rtc_freq != RTC_FREQ &&
1299 ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
1300 fprintf(stderr, "Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal\n"
1301 "error, but for better emulation accuracy either use a 2.6 host Linux kernel or\n"
1302 "type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.\n");
1303 goto fail;
1304 }
1305 if (ioctl(rtc_fd, RTC_PIE_ON, 0) < 0) {
1306 fail:
1307 close(rtc_fd);
1308 return -1;
1309 }
1310
1311 enable_sigio_timer(rtc_fd);
1312
1313 t->priv = (void *)(long)rtc_fd;
1314
1315 return 0;
1316 }
1317
1318 static void rtc_stop_timer(struct qemu_alarm_timer *t)
1319 {
1320 int rtc_fd = (long)t->priv;
1321
1322 close(rtc_fd);
1323 }
1324
1325 static int dynticks_start_timer(struct qemu_alarm_timer *t)
1326 {
1327 struct sigevent ev;
1328 timer_t host_timer;
1329 struct sigaction act;
1330
1331 sigfillset(&act.sa_mask);
1332 act.sa_flags = 0;
1333 act.sa_handler = host_alarm_handler;
1334
1335 sigaction(SIGALRM, &act, NULL);
1336
1337 /*
1338 * Initialize ev struct to 0 to avoid valgrind complaining
1339 * about uninitialized data in timer_create call
1340 */
1341 memset(&ev, 0, sizeof(ev));
1342 ev.sigev_value.sival_int = 0;
1343 ev.sigev_notify = SIGEV_SIGNAL;
1344 ev.sigev_signo = SIGALRM;
1345
1346 if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {
1347 perror("timer_create");
1348
1349 /* disable dynticks */
1350 fprintf(stderr, "Dynamic Ticks disabled\n");
1351
1352 return -1;
1353 }
1354
1355 t->priv = (void *)(long)host_timer;
1356
1357 return 0;
1358 }
1359
1360 static void dynticks_stop_timer(struct qemu_alarm_timer *t)
1361 {
1362 timer_t host_timer = (timer_t)(long)t->priv;
1363
1364 timer_delete(host_timer);
1365 }
1366
1367 static void dynticks_rearm_timer(struct qemu_alarm_timer *t)
1368 {
1369 timer_t host_timer = (timer_t)(long)t->priv;
1370 struct itimerspec timeout;
1371 int64_t nearest_delta_us = INT64_MAX;
1372 int64_t current_us;
1373
1374 if (!active_timers[QEMU_CLOCK_REALTIME] &&
1375 !active_timers[QEMU_CLOCK_VIRTUAL] &&
1376 !active_timers[QEMU_CLOCK_HOST])
1377 return;
1378
1379 nearest_delta_us = qemu_next_deadline_dyntick();
1380
1381 /* check whether a timer is already running */
1382 if (timer_gettime(host_timer, &timeout)) {
1383 perror("gettime");
1384 fprintf(stderr, "Internal timer error: aborting\n");
1385 exit(1);
1386 }
1387 current_us = timeout.it_value.tv_sec * 1000000 + timeout.it_value.tv_nsec/1000;
1388 if (current_us && current_us <= nearest_delta_us)
1389 return;
1390
1391 timeout.it_interval.tv_sec = 0;
1392 timeout.it_interval.tv_nsec = 0; /* 0 for one-shot timer */
1393 timeout.it_value.tv_sec = nearest_delta_us / 1000000;
1394 timeout.it_value.tv_nsec = (nearest_delta_us % 1000000) * 1000;
1395 if (timer_settime(host_timer, 0 /* RELATIVE */, &timeout, NULL)) {
1396 perror("settime");
1397 fprintf(stderr, "Internal timer error: aborting\n");
1398 exit(1);
1399 }
1400 }
1401
1402 #endif /* defined(__linux__) */
1403
1404 static int unix_start_timer(struct qemu_alarm_timer *t)
1405 {
1406 struct sigaction act;
1407 struct itimerval itv;
1408 int err;
1409
1410 /* timer signal */
1411 sigfillset(&act.sa_mask);
1412 act.sa_flags = 0;
1413 act.sa_handler = host_alarm_handler;
1414
1415 sigaction(SIGALRM, &act, NULL);
1416
1417 itv.it_interval.tv_sec = 0;
1418 /* for i386 kernel 2.6 to get 1 ms */
1419 itv.it_interval.tv_usec = 999;
1420 itv.it_value.tv_sec = 0;
1421 itv.it_value.tv_usec = 10 * 1000;
1422
1423 err = setitimer(ITIMER_REAL, &itv, NULL);
1424 if (err)
1425 return -1;
1426
1427 return 0;
1428 }
1429
1430 static void unix_stop_timer(struct qemu_alarm_timer *t)
1431 {
1432 struct itimerval itv;
1433
1434 memset(&itv, 0, sizeof(itv));
1435 setitimer(ITIMER_REAL, &itv, NULL);
1436 }
1437
1438 #endif /* !defined(_WIN32) */
1439
1440
1441 #ifdef _WIN32
1442
1443 static int win32_start_timer(struct qemu_alarm_timer *t)
1444 {
1445 TIMECAPS tc;
1446 struct qemu_alarm_win32 *data = t->priv;
1447 UINT flags;
1448
1449 memset(&tc, 0, sizeof(tc));
1450 timeGetDevCaps(&tc, sizeof(tc));
1451
1452 if (data->period < tc.wPeriodMin)
1453 data->period = tc.wPeriodMin;
1454
1455 timeBeginPeriod(data->period);
1456
1457 flags = TIME_CALLBACK_FUNCTION;
1458 if (alarm_has_dynticks(t))
1459 flags |= TIME_ONESHOT;
1460 else
1461 flags |= TIME_PERIODIC;
1462
1463 data->timerId = timeSetEvent(1, // interval (ms)
1464 data->period, // resolution
1465 host_alarm_handler, // function
1466 (DWORD)t, // parameter
1467 flags);
1468
1469 if (!data->timerId) {
1470 fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n",
1471 GetLastError());
1472 timeEndPeriod(data->period);
1473 return -1;
1474 }
1475
1476 return 0;
1477 }
1478
1479 static void win32_stop_timer(struct qemu_alarm_timer *t)
1480 {
1481 struct qemu_alarm_win32 *data = t->priv;
1482
1483 timeKillEvent(data->timerId);
1484 timeEndPeriod(data->period);
1485 }
1486
1487 static void win32_rearm_timer(struct qemu_alarm_timer *t)
1488 {
1489 struct qemu_alarm_win32 *data = t->priv;
1490
1491 if (!active_timers[QEMU_CLOCK_REALTIME] &&
1492 !active_timers[QEMU_CLOCK_VIRTUAL] &&
1493 !active_timers[QEMU_CLOCK_HOST])
1494 return;
1495
1496 timeKillEvent(data->timerId);
1497
1498 data->timerId = timeSetEvent(1,
1499 data->period,
1500 host_alarm_handler,
1501 (DWORD)t,
1502 TIME_ONESHOT | TIME_PERIODIC);
1503
1504 if (!data->timerId) {
1505 fprintf(stderr, "Failed to re-arm win32 alarm timer %ld\n",
1506 GetLastError());
1507
1508 timeEndPeriod(data->period);
1509 exit(1);
1510 }
1511 }
1512
1513 #endif /* _WIN32 */
1514
1515 static int init_timer_alarm(void)
1516 {
1517 struct qemu_alarm_timer *t = NULL;
1518 int i, err = -1;
1519
1520 for (i = 0; alarm_timers[i].name; i++) {
1521 t = &alarm_timers[i];
1522
1523 err = t->start(t);
1524 if (!err)
1525 break;
1526 }
1527
1528 if (err) {
1529 err = -ENOENT;
1530 goto fail;
1531 }
1532
1533 alarm_timer = t;
1534
1535 return 0;
1536
1537 fail:
1538 return err;
1539 }
1540
1541 static void quit_timers(void)
1542 {
1543 alarm_timer->stop(alarm_timer);
1544 alarm_timer = NULL;
1545 }
1546
1547 /***********************************************************/
1548 /* host time/date access */
1549 void qemu_get_timedate(struct tm *tm, int offset)
1550 {
1551 time_t ti;
1552 struct tm *ret;
1553
1554 time(&ti);
1555 ti += offset;
1556 if (rtc_date_offset == -1) {
1557 if (rtc_utc)
1558 ret = gmtime(&ti);
1559 else
1560 ret = localtime(&ti);
1561 } else {
1562 ti -= rtc_date_offset;
1563 ret = gmtime(&ti);
1564 }
1565
1566 memcpy(tm, ret, sizeof(struct tm));
1567 }
1568
1569 int qemu_timedate_diff(struct tm *tm)
1570 {
1571 time_t seconds;
1572
1573 if (rtc_date_offset == -1)
1574 if (rtc_utc)
1575 seconds = mktimegm(tm);
1576 else
1577 seconds = mktime(tm);
1578 else
1579 seconds = mktimegm(tm) + rtc_date_offset;
1580
1581 return seconds - time(NULL);
1582 }
1583
1584 static void configure_rtc_date_offset(const char *startdate, int legacy)
1585 {
1586 time_t rtc_start_date;
1587 struct tm tm;
1588
1589 if (!strcmp(startdate, "now") && legacy) {
1590 rtc_date_offset = -1;
1591 } else {
1592 if (sscanf(startdate, "%d-%d-%dT%d:%d:%d",
1593 &tm.tm_year,
1594 &tm.tm_mon,
1595 &tm.tm_mday,
1596 &tm.tm_hour,
1597 &tm.tm_min,
1598 &tm.tm_sec) == 6) {
1599 /* OK */
1600 } else if (sscanf(startdate, "%d-%d-%d",
1601 &tm.tm_year,
1602 &tm.tm_mon,
1603 &tm.tm_mday) == 3) {
1604 tm.tm_hour = 0;
1605 tm.tm_min = 0;
1606 tm.tm_sec = 0;
1607 } else {
1608 goto date_fail;
1609 }
1610 tm.tm_year -= 1900;
1611 tm.tm_mon--;
1612 rtc_start_date = mktimegm(&tm);
1613 if (rtc_start_date == -1) {
1614 date_fail:
1615 fprintf(stderr, "Invalid date format. Valid formats are:\n"
1616 "'2006-06-17T16:01:21' or '2006-06-17'\n");
1617 exit(1);
1618 }
1619 rtc_date_offset = time(NULL) - rtc_start_date;
1620 }
1621 }
1622
1623 static void configure_rtc(QemuOpts *opts)
1624 {
1625 const char *value;
1626
1627 value = qemu_opt_get(opts, "base");
1628 if (value) {
1629 if (!strcmp(value, "utc")) {
1630 rtc_utc = 1;
1631 } else if (!strcmp(value, "localtime")) {
1632 rtc_utc = 0;
1633 } else {
1634 configure_rtc_date_offset(value, 0);
1635 }
1636 }
1637 value = qemu_opt_get(opts, "clock");
1638 if (value) {
1639 if (!strcmp(value, "host")) {
1640 rtc_clock = host_clock;
1641 } else if (!strcmp(value, "vm")) {
1642 rtc_clock = vm_clock;
1643 } else {
1644 fprintf(stderr, "qemu: invalid option value '%s'\n", value);
1645 exit(1);
1646 }
1647 }
1648 #ifdef CONFIG_TARGET_I386
1649 value = qemu_opt_get(opts, "driftfix");
1650 if (value) {
1651 if (!strcmp(buf, "slew")) {
1652 rtc_td_hack = 1;
1653 } else if (!strcmp(buf, "none")) {
1654 rtc_td_hack = 0;
1655 } else {
1656 fprintf(stderr, "qemu: invalid option value '%s'\n", value);
1657 exit(1);
1658 }
1659 }
1660 #endif
1661 }
1662
1663 #ifdef _WIN32
1664 static void socket_cleanup(void)
1665 {
1666 WSACleanup();
1667 }
1668
1669 static int socket_init(void)
1670 {
1671 WSADATA Data;
1672 int ret, err;
1673
1674 ret = WSAStartup(MAKEWORD(2,2), &Data);
1675 if (ret != 0) {
1676 err = WSAGetLastError();
1677 fprintf(stderr, "WSAStartup: %d\n", err);
1678 return -1;
1679 }
1680 atexit(socket_cleanup);
1681 return 0;
1682 }
1683 #endif
1684
1685 /***********************************************************/
1686 /* Bluetooth support */
1687 static int nb_hcis;
1688 static int cur_hci;
1689 static struct HCIInfo *hci_table[MAX_NICS];
1690
1691 static struct bt_vlan_s {
1692 struct bt_scatternet_s net;
1693 int id;
1694 struct bt_vlan_s *next;
1695 } *first_bt_vlan;
1696
1697 /* find or alloc a new bluetooth "VLAN" */
1698 static struct bt_scatternet_s *qemu_find_bt_vlan(int id)
1699 {
1700 struct bt_vlan_s **pvlan, *vlan;
1701 for (vlan = first_bt_vlan; vlan != NULL; vlan = vlan->next) {
1702 if (vlan->id == id)
1703 return &vlan->net;
1704 }
1705 vlan = qemu_mallocz(sizeof(struct bt_vlan_s));
1706 vlan->id = id;
1707 pvlan = &first_bt_vlan;
1708 while (*pvlan != NULL)
1709 pvlan = &(*pvlan)->next;
1710 *pvlan = vlan;
1711 return &vlan->net;
1712 }
1713
1714 static void null_hci_send(struct HCIInfo *hci, const uint8_t *data, int len)
1715 {
1716 }
1717
1718 static int null_hci_addr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
1719 {
1720 return -ENOTSUP;
1721 }
1722
1723 static struct HCIInfo null_hci = {
1724 .cmd_send = null_hci_send,
1725 .sco_send = null_hci_send,
1726 .acl_send = null_hci_send,
1727 .bdaddr_set = null_hci_addr_set,
1728 };
1729
1730 struct HCIInfo *qemu_next_hci(void)
1731 {
1732 if (cur_hci == nb_hcis)
1733 return &null_hci;
1734
1735 return hci_table[cur_hci++];
1736 }
1737
1738 static struct HCIInfo *hci_init(const char *str)
1739 {
1740 char *endp;
1741 struct bt_scatternet_s *vlan = 0;
1742
1743 if (!strcmp(str, "null"))
1744 /* null */
1745 return &null_hci;
1746 else if (!strncmp(str, "host", 4) && (str[4] == '\0' || str[4] == ':'))
1747 /* host[:hciN] */
1748 return bt_host_hci(str[4] ? str + 5 : "hci0");
1749 else if (!strncmp(str, "hci", 3)) {
1750 /* hci[,vlan=n] */
1751 if (str[3]) {
1752 if (!strncmp(str + 3, ",vlan=", 6)) {
1753 vlan = qemu_find_bt_vlan(strtol(str + 9, &endp, 0));
1754 if (*endp)
1755 vlan = 0;
1756 }
1757 } else
1758 vlan = qemu_find_bt_vlan(0);
1759 if (vlan)
1760 return bt_new_hci(vlan);
1761 }
1762
1763 fprintf(stderr, "qemu: Unknown bluetooth HCI `%s'.\n", str);
1764
1765 return 0;
1766 }
1767
1768 static int bt_hci_parse(const char *str)
1769 {
1770 struct HCIInfo *hci;
1771 bdaddr_t bdaddr;
1772
1773 if (nb_hcis >= MAX_NICS) {
1774 fprintf(stderr, "qemu: Too many bluetooth HCIs (max %i).\n", MAX_NICS);
1775 return -1;
1776 }
1777
1778 hci = hci_init(str);
1779 if (!hci)
1780 return -1;
1781
1782 bdaddr.b[0] = 0x52;
1783 bdaddr.b[1] = 0x54;
1784 bdaddr.b[2] = 0x00;
1785 bdaddr.b[3] = 0x12;
1786 bdaddr.b[4] = 0x34;
1787 bdaddr.b[5] = 0x56 + nb_hcis;
1788 hci->bdaddr_set(hci, bdaddr.b);
1789
1790 hci_table[nb_hcis++] = hci;
1791
1792 return 0;
1793 }
1794
1795 static void bt_vhci_add(int vlan_id)
1796 {
1797 struct bt_scatternet_s *vlan = qemu_find_bt_vlan(vlan_id);
1798
1799 if (!vlan->slave)
1800 fprintf(stderr, "qemu: warning: adding a VHCI to "
1801 "an empty scatternet %i\n", vlan_id);
1802
1803 bt_vhci_init(bt_new_hci(vlan));
1804 }
1805
1806 static struct bt_device_s *bt_device_add(const char *opt)
1807 {
1808 struct bt_scatternet_s *vlan;
1809 int vlan_id = 0;
1810 char *endp = strstr(opt, ",vlan=");
1811 int len = (endp ? endp - opt : strlen(opt)) + 1;
1812 char devname[10];
1813
1814 pstrcpy(devname, MIN(sizeof(devname), len), opt);
1815
1816 if (endp) {
1817 vlan_id = strtol(endp + 6, &endp, 0);
1818 if (*endp) {
1819 fprintf(stderr, "qemu: unrecognised bluetooth vlan Id\n");
1820 return 0;
1821 }
1822 }
1823
1824 vlan = qemu_find_bt_vlan(vlan_id);
1825
1826 if (!vlan->slave)
1827 fprintf(stderr, "qemu: warning: adding a slave device to "
1828 "an empty scatternet %i\n", vlan_id);
1829
1830 if (!strcmp(devname, "keyboard"))
1831 return bt_keyboard_init(vlan);
1832
1833 fprintf(stderr, "qemu: unsupported bluetooth device `%s'\n", devname);
1834 return 0;
1835 }
1836
1837 static int bt_parse(const char *opt)
1838 {
1839 const char *endp, *p;
1840 int vlan;
1841
1842 if (strstart(opt, "hci", &endp)) {
1843 if (!*endp || *endp == ',') {
1844 if (*endp)
1845 if (!strstart(endp, ",vlan=", 0))
1846 opt = endp + 1;
1847
1848 return bt_hci_parse(opt);
1849 }
1850 } else if (strstart(opt, "vhci", &endp)) {
1851 if (!*endp || *endp == ',') {
1852 if (*endp) {
1853 if (strstart(endp, ",vlan=", &p)) {
1854 vlan = strtol(p, (char **) &endp, 0);
1855 if (*endp) {
1856 fprintf(stderr, "qemu: bad scatternet '%s'\n", p);
1857 return 1;
1858 }
1859 } else {
1860 fprintf(stderr, "qemu: bad parameter '%s'\n", endp + 1);
1861 return 1;
1862 }
1863 } else
1864 vlan = 0;
1865
1866 bt_vhci_add(vlan);
1867 return 0;
1868 }
1869 } else if (strstart(opt, "device:", &endp))
1870 return !bt_device_add(endp);
1871
1872 fprintf(stderr, "qemu: bad bluetooth parameter '%s'\n", opt);
1873 return 1;
1874 }
1875
1876 /***********************************************************/
1877 /* QEMU Block devices */
1878
1879 #define HD_ALIAS "index=%d,media=disk"
1880 #define CDROM_ALIAS "index=2,media=cdrom"
1881 #define FD_ALIAS "index=%d,if=floppy"
1882 #define PFLASH_ALIAS "if=pflash"
1883 #define MTD_ALIAS "if=mtd"
1884 #define SD_ALIAS "index=0,if=sd"
1885
1886 QemuOpts *drive_add(const char *file, const char *fmt, ...)
1887 {
1888 va_list ap;
1889 char optstr[1024];
1890 QemuOpts *opts;
1891
1892 va_start(ap, fmt);
1893 vsnprintf(optstr, sizeof(optstr), fmt, ap);
1894 va_end(ap);
1895
1896 opts = qemu_opts_parse(&qemu_drive_opts, optstr, NULL);
1897 if (!opts) {
1898 fprintf(stderr, "%s: huh? duplicate? (%s)\n",
1899 __FUNCTION__, optstr);
1900 return NULL;
1901 }
1902 if (file)
1903 qemu_opt_set(opts, "file", file);
1904 return opts;
1905 }
1906
1907 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
1908 {
1909 DriveInfo *dinfo;
1910
1911 /* seek interface, bus and unit */
1912
1913 QTAILQ_FOREACH(dinfo, &drives, next) {
1914 if (dinfo->type == type &&
1915 dinfo->bus == bus &&
1916 dinfo->unit == unit)
1917 return dinfo;
1918 }
1919
1920 return NULL;
1921 }
1922
1923 DriveInfo *drive_get_by_id(const char *id)
1924 {
1925 DriveInfo *dinfo;
1926
1927 QTAILQ_FOREACH(dinfo, &drives, next) {
1928 if (strcmp(id, dinfo->id))
1929 continue;
1930 return dinfo;
1931 }
1932 return NULL;
1933 }
1934
1935 int drive_get_max_bus(BlockInterfaceType type)
1936 {
1937 int max_bus;
1938 DriveInfo *dinfo;
1939
1940 max_bus = -1;
1941 QTAILQ_FOREACH(dinfo, &drives, next) {
1942 if(dinfo->type == type &&
1943 dinfo->bus > max_bus)
1944 max_bus = dinfo->bus;
1945 }
1946 return max_bus;
1947 }
1948
1949 const char *drive_get_serial(BlockDriverState *bdrv)
1950 {
1951 DriveInfo *dinfo;
1952
1953 QTAILQ_FOREACH(dinfo, &drives, next) {
1954 if (dinfo->bdrv == bdrv)
1955 return dinfo->serial;
1956 }
1957
1958 return "\0";
1959 }
1960
1961 BlockInterfaceErrorAction drive_get_onerror(BlockDriverState *bdrv)
1962 {
1963 DriveInfo *dinfo;
1964
1965 QTAILQ_FOREACH(dinfo, &drives, next) {
1966 if (dinfo->bdrv == bdrv)
1967 return dinfo->onerror;
1968 }
1969
1970 return BLOCK_ERR_STOP_ENOSPC;
1971 }
1972
1973 static void bdrv_format_print(void *opaque, const char *name)
1974 {
1975 fprintf(stderr, " %s", name);
1976 }
1977
1978 void drive_uninit(DriveInfo *dinfo)
1979 {
1980 qemu_opts_del(dinfo->opts);
1981 bdrv_delete(dinfo->bdrv);
1982 QTAILQ_REMOVE(&drives, dinfo, next);
1983 qemu_free(dinfo);
1984 }
1985
1986 DriveInfo *drive_init(QemuOpts *opts, void *opaque,
1987 int *fatal_error)
1988 {
1989 const char *buf;
1990 const char *file = NULL;
1991 char devname[128];
1992 const char *serial;
1993 const char *mediastr = "";
1994 BlockInterfaceType type;
1995 enum { MEDIA_DISK, MEDIA_CDROM } media;
1996 int bus_id, unit_id;
1997 int cyls, heads, secs, translation;
1998 BlockDriver *drv = NULL;
1999 QEMUMachine *machine = opaque;
2000 int max_devs;
2001 int index;
2002 int cache;
2003 int aio = 0;
2004 int ro = 0;
2005 int bdrv_flags, onerror;
2006 const char *devaddr;
2007 DriveInfo *dinfo;
2008 int snapshot = 0;
2009
2010 *fatal_error = 1;
2011
2012 translation = BIOS_ATA_TRANSLATION_AUTO;
2013 cache = 1;
2014
2015 if (machine && machine->use_scsi) {
2016 type = IF_SCSI;
2017 max_devs = MAX_SCSI_DEVS;
2018 pstrcpy(devname, sizeof(devname), "scsi");
2019 } else {
2020 type = IF_IDE;
2021 max_devs = MAX_IDE_DEVS;
2022 pstrcpy(devname, sizeof(devname), "ide");
2023 }
2024 media = MEDIA_DISK;
2025
2026 /* extract parameters */
2027 bus_id = qemu_opt_get_number(opts, "bus", 0);
2028 unit_id = qemu_opt_get_number(opts, "unit", -1);
2029 index = qemu_opt_get_number(opts, "index", -1);
2030
2031 cyls = qemu_opt_get_number(opts, "cyls", 0);
2032 heads = qemu_opt_get_number(opts, "heads", 0);
2033 secs = qemu_opt_get_number(opts, "secs", 0);
2034
2035 snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
2036 ro = qemu_opt_get_bool(opts, "readonly", 0);
2037
2038 file = qemu_opt_get(opts, "file");
2039 serial = qemu_opt_get(opts, "serial");
2040
2041 if ((buf = qemu_opt_get(opts, "if")) != NULL) {
2042 pstrcpy(devname, sizeof(devname), buf);
2043 if (!strcmp(buf, "ide")) {
2044 type = IF_IDE;
2045 max_devs = MAX_IDE_DEVS;
2046 } else if (!strcmp(buf, "scsi")) {
2047 type = IF_SCSI;
2048 max_devs = MAX_SCSI_DEVS;
2049 } else if (!strcmp(buf, "floppy")) {
2050 type = IF_FLOPPY;
2051 max_devs = 0;
2052 } else if (!strcmp(buf, "pflash")) {
2053 type = IF_PFLASH;
2054 max_devs = 0;
2055 } else if (!strcmp(buf, "mtd")) {
2056 type = IF_MTD;
2057 max_devs = 0;
2058 } else if (!strcmp(buf, "sd")) {
2059 type = IF_SD;
2060 max_devs = 0;
2061 } else if (!strcmp(buf, "virtio")) {
2062 type = IF_VIRTIO;
2063 max_devs = 0;
2064 } else if (!strcmp(buf, "xen")) {
2065 type = IF_XEN;
2066 max_devs = 0;
2067 } else if (!strcmp(buf, "none")) {
2068 type = IF_NONE;
2069 max_devs = 0;
2070 } else {
2071 fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf);
2072 return NULL;
2073 }
2074 }
2075
2076 if (cyls || heads || secs) {
2077 if (cyls < 1 || (type == IF_IDE && cyls > 16383)) {
2078 fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf);
2079 return NULL;
2080 }
2081 if (heads < 1 || (type == IF_IDE && heads > 16)) {
2082 fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf);
2083 return NULL;
2084 }
2085 if (secs < 1 || (type == IF_IDE && secs > 63)) {
2086 fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf);
2087 return NULL;
2088 }
2089 }
2090
2091 if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
2092 if (!cyls) {
2093 fprintf(stderr,
2094 "qemu: '%s' trans must be used with cyls,heads and secs\n",
2095 buf);
2096 return NULL;
2097 }
2098 if (!strcmp(buf, "none"))
2099 translation = BIOS_ATA_TRANSLATION_NONE;
2100 else if (!strcmp(buf, "lba"))
2101 translation = BIOS_ATA_TRANSLATION_LBA;
2102 else if (!strcmp(buf, "auto"))
2103 translation = BIOS_ATA_TRANSLATION_AUTO;
2104 else {
2105 fprintf(stderr, "qemu: '%s' invalid translation type\n", buf);
2106 return NULL;
2107 }
2108 }
2109
2110 if ((buf = qemu_opt_get(opts, "media")) != NULL) {
2111 if (!strcmp(buf, "disk")) {
2112 media = MEDIA_DISK;
2113 } else if (!strcmp(buf, "cdrom")) {
2114 if (cyls || secs || heads) {
2115 fprintf(stderr,
2116 "qemu: '%s' invalid physical CHS format\n", buf);
2117 return NULL;
2118 }
2119 media = MEDIA_CDROM;
2120 } else {
2121 fprintf(stderr, "qemu: '%s' invalid media\n", buf);
2122 return NULL;
2123 }
2124 }
2125
2126 if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
2127 if (!strcmp(buf, "off") || !strcmp(buf, "none"))
2128 cache = 0;
2129 else if (!strcmp(buf, "writethrough"))
2130 cache = 1;
2131 else if (!strcmp(buf, "writeback"))
2132 cache = 2;
2133 else {
2134 fprintf(stderr, "qemu: invalid cache option\n");
2135 return NULL;
2136 }
2137 }
2138
2139 #ifdef CONFIG_LINUX_AIO
2140 if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
2141 if (!strcmp(buf, "threads"))
2142 aio = 0;
2143 else if (!strcmp(buf, "native"))
2144 aio = 1;
2145 else {
2146 fprintf(stderr, "qemu: invalid aio option\n");
2147 return NULL;
2148 }
2149 }
2150 #endif
2151
2152 if ((buf = qemu_opt_get(opts, "format")) != NULL) {
2153 if (strcmp(buf, "?") == 0) {
2154 fprintf(stderr, "qemu: Supported formats:");
2155 bdrv_iterate_format(bdrv_format_print, NULL);
2156 fprintf(stderr, "\n");
2157 return NULL;
2158 }
2159 drv = bdrv_find_format(buf);
2160 if (!drv) {
2161 fprintf(stderr, "qemu: '%s' invalid format\n", buf);
2162 return NULL;
2163 }
2164 }
2165
2166 onerror = BLOCK_ERR_STOP_ENOSPC;
2167 if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
2168 if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO) {
2169 fprintf(stderr, "werror is no supported by this format\n");
2170 return NULL;
2171 }
2172 if (!strcmp(buf, "ignore"))
2173 onerror = BLOCK_ERR_IGNORE;
2174 else if (!strcmp(buf, "enospc"))
2175 onerror = BLOCK_ERR_STOP_ENOSPC;
2176 else if (!strcmp(buf, "stop"))
2177 onerror = BLOCK_ERR_STOP_ANY;
2178 else if (!strcmp(buf, "report"))
2179 onerror = BLOCK_ERR_REPORT;
2180 else {
2181 fprintf(stderr, "qemu: '%s' invalid write error action\n", buf);
2182 return NULL;
2183 }
2184 }
2185
2186 if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
2187 if (type != IF_VIRTIO) {
2188 fprintf(stderr, "addr is not supported\n");
2189 return NULL;
2190 }
2191 }
2192
2193 /* compute bus and unit according index */
2194
2195 if (index != -1) {
2196 if (bus_id != 0 || unit_id != -1) {
2197 fprintf(stderr,
2198 "qemu: index cannot be used with bus and unit\n");
2199 return NULL;
2200 }
2201 if (max_devs == 0)
2202 {
2203 unit_id = index;
2204 bus_id = 0;
2205 } else {
2206 unit_id = index % max_devs;
2207 bus_id = index / max_devs;
2208 }
2209 }
2210
2211 /* if user doesn't specify a unit_id,
2212 * try to find the first free
2213 */
2214
2215 if (unit_id == -1) {
2216 unit_id = 0;
2217 while (drive_get(type, bus_id, unit_id) != NULL) {
2218 unit_id++;
2219 if (max_devs && unit_id >= max_devs) {
2220 unit_id -= max_devs;
2221 bus_id++;
2222 }
2223 }
2224 }
2225
2226 /* check unit id */
2227
2228 if (max_devs && unit_id >= max_devs) {
2229 fprintf(stderr, "qemu: unit %d too big (max is %d)\n",
2230 unit_id, max_devs - 1);
2231 return NULL;
2232 }
2233
2234 /*
2235 * ignore multiple definitions
2236 */
2237
2238 if (drive_get(type, bus_id, unit_id) != NULL) {
2239 *fatal_error = 0;
2240 return NULL;
2241 }
2242
2243 /* init */
2244
2245 dinfo = qemu_mallocz(sizeof(*dinfo));
2246 if ((buf = qemu_opts_id(opts)) != NULL) {
2247 dinfo->id = qemu_strdup(buf);
2248 } else {
2249 /* no id supplied -> create one */
2250 dinfo->id = qemu_mallocz(32);
2251 if (type == IF_IDE || type == IF_SCSI)
2252 mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
2253 if (max_devs)
2254 snprintf(dinfo->id, 32, "%s%i%s%i",
2255 devname, bus_id, mediastr, unit_id);
2256 else
2257 snprintf(dinfo->id, 32, "%s%s%i",
2258 devname, mediastr, unit_id);
2259 }
2260 dinfo->bdrv = bdrv_new(dinfo->id);
2261 dinfo->devaddr = devaddr;
2262 dinfo->type = type;
2263 dinfo->bus = bus_id;
2264 dinfo->unit = unit_id;
2265 dinfo->onerror = onerror;
2266 dinfo->opts = opts;
2267 if (serial)
2268 strncpy(dinfo->serial, serial, sizeof(serial));
2269 QTAILQ_INSERT_TAIL(&drives, dinfo, next);
2270
2271 switch(type) {
2272 case IF_IDE:
2273 case IF_SCSI:
2274 case IF_XEN:
2275 case IF_NONE:
2276 switch(media) {
2277 case MEDIA_DISK:
2278 if (cyls != 0) {
2279 bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs);
2280 bdrv_set_translation_hint(dinfo->bdrv, translation);
2281 }
2282 break;
2283 case MEDIA_CDROM:
2284 bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM);
2285 break;
2286 }
2287 break;
2288 case IF_SD:
2289 /* FIXME: This isn't really a floppy, but it's a reasonable
2290 approximation. */
2291 case IF_FLOPPY:
2292 bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY);
2293 break;
2294 case IF_PFLASH:
2295 case IF_MTD:
2296 break;
2297 case IF_VIRTIO:
2298 /* add virtio block device */
2299 opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
2300 qemu_opt_set(opts, "driver", "virtio-blk-pci");
2301 qemu_opt_set(opts, "drive", dinfo->id);
2302 if (devaddr)
2303 qemu_opt_set(opts, "addr", devaddr);
2304 break;
2305 case IF_COUNT:
2306 abort();
2307 }
2308 if (!file) {
2309 *fatal_error = 0;
2310 return NULL;
2311 }
2312 bdrv_flags = 0;
2313 if (snapshot) {
2314 bdrv_flags |= BDRV_O_SNAPSHOT;
2315 cache = 2; /* always use write-back with snapshot */
2316 }
2317 if (cache == 0) /* no caching */
2318 bdrv_flags |= BDRV_O_NOCACHE;
2319 else if (cache == 2) /* write-back */
2320 bdrv_flags |= BDRV_O_CACHE_WB;
2321
2322 if (aio == 1) {
2323 bdrv_flags |= BDRV_O_NATIVE_AIO;
2324 } else {
2325 bdrv_flags &= ~BDRV_O_NATIVE_AIO;
2326 }
2327
2328 if (ro == 1) {
2329 if (type == IF_IDE) {
2330 fprintf(stderr, "qemu: readonly flag not supported for drive with ide interface\n");
2331 return NULL;
2332 }
2333 (void)bdrv_set_read_only(dinfo->bdrv, 1);
2334 }
2335
2336 if (bdrv_open2(dinfo->bdrv, file, bdrv_flags, drv) < 0) {
2337 fprintf(stderr, "qemu: could not open disk image %s: %s\n",
2338 file, strerror(errno));
2339 return NULL;
2340 }
2341
2342 if (bdrv_key_required(dinfo->bdrv))
2343 autostart = 0;
2344 *fatal_error = 0;
2345 return dinfo;
2346 }
2347
2348 static int drive_init_func(QemuOpts *opts, void *opaque)
2349 {
2350 QEMUMachine *machine = opaque;
2351 int fatal_error = 0;
2352
2353 if (drive_init(opts, machine, &fatal_error) == NULL) {
2354 if (fatal_error)
2355 return 1;
2356 }
2357 return 0;
2358 }
2359
2360 static int drive_enable_snapshot(QemuOpts *opts, void *opaque)
2361 {
2362 if (NULL == qemu_opt_get(opts, "snapshot")) {
2363 qemu_opt_set(opts, "snapshot", "on");
2364 }
2365 return 0;
2366 }
2367
2368 void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque)
2369 {
2370 boot_set_handler = func;
2371 boot_set_opaque = opaque;
2372 }
2373
2374 int qemu_boot_set(const char *boot_devices)
2375 {
2376 if (!boot_set_handler) {
2377 return -EINVAL;
2378 }
2379 return boot_set_handler(boot_set_opaque, boot_devices);
2380 }
2381
2382 static int parse_bootdevices(char *devices)
2383 {
2384 /* We just do some generic consistency checks */
2385 const char *p;
2386 int bitmap = 0;
2387
2388 for (p = devices; *p != '\0'; p++) {
2389 /* Allowed boot devices are:
2390 * a-b: floppy disk drives
2391 * c-f: IDE disk drives
2392 * g-m: machine implementation dependant drives
2393 * n-p: network devices
2394 * It's up to each machine implementation to check if the given boot
2395 * devices match the actual hardware implementation and firmware
2396 * features.
2397 */
2398 if (*p < 'a' || *p > 'p') {
2399 fprintf(stderr, "Invalid boot device '%c'\n", *p);
2400 exit(1);
2401 }
2402 if (bitmap & (1 << (*p - 'a'))) {
2403 fprintf(stderr, "Boot device '%c' was given twice\n", *p);
2404 exit(1);
2405 }
2406 bitmap |= 1 << (*p - 'a');
2407 }
2408 return bitmap;
2409 }
2410
2411 static void restore_boot_devices(void *opaque)
2412 {
2413 char *standard_boot_devices = opaque;
2414
2415 qemu_boot_set(standard_boot_devices);
2416
2417 qemu_unregister_reset(restore_boot_devices, standard_boot_devices);
2418 qemu_free(standard_boot_devices);
2419 }
2420
2421 static void numa_add(const char *optarg)
2422 {
2423 char option[128];
2424 char *endptr;
2425 unsigned long long value, endvalue;
2426 int nodenr;
2427
2428 optarg = get_opt_name(option, 128, optarg, ',') + 1;
2429 if (!strcmp(option, "node")) {
2430 if (get_param_value(option, 128, "nodeid", optarg) == 0) {
2431 nodenr = nb_numa_nodes;
2432 } else {
2433 nodenr = strtoull(option, NULL, 10);
2434 }
2435
2436 if (get_param_value(option, 128, "mem", optarg) == 0) {
2437 node_mem[nodenr] = 0;
2438 } else {
2439 value = strtoull(option, &endptr, 0);
2440 switch (*endptr) {
2441 case 0: case 'M': case 'm':
2442 value <<= 20;
2443 break;
2444 case 'G': case 'g':
2445 value <<= 30;
2446 break;
2447 }
2448 node_mem[nodenr] = value;
2449 }
2450 if (get_param_value(option, 128, "cpus", optarg) == 0) {
2451 node_cpumask[nodenr] = 0;
2452 } else {
2453 value = strtoull(option, &endptr, 10);
2454 if (value >= 64) {
2455 value = 63;
2456 fprintf(stderr, "only 64 CPUs in NUMA mode supported.\n");
2457 } else {
2458 if (*endptr == '-') {
2459 endvalue = strtoull(endptr+1, &endptr, 10);
2460 if (endvalue >= 63) {
2461 endvalue = 62;
2462 fprintf(stderr,
2463 "only 63 CPUs in NUMA mode supported.\n");
2464 }
2465 value = (1 << (endvalue + 1)) - (1 << value);
2466 } else {
2467 value = 1 << value;
2468 }
2469 }
2470 node_cpumask[nodenr] = value;
2471 }
2472 nb_numa_nodes++;
2473 }
2474 return;
2475 }
2476
2477 static void smp_parse(const char *optarg)
2478 {
2479 int smp, sockets = 0, threads = 0, cores = 0;
2480 char *endptr;
2481 char option[128];
2482
2483 smp = strtoul(optarg, &endptr, 10);
2484 if (endptr != optarg) {
2485 if (*endptr == ',') {
2486 endptr++;
2487 }
2488 }
2489 if (get_param_value(option, 128, "sockets", endptr) != 0)
2490 sockets = strtoull(option, NULL, 10);
2491 if (get_param_value(option, 128, "cores", endptr) != 0)
2492 cores = strtoull(option, NULL, 10);
2493 if (get_param_value(option, 128, "threads", endptr) != 0)
2494 threads = strtoull(option, NULL, 10);
2495 if (get_param_value(option, 128, "maxcpus", endptr) != 0)
2496 max_cpus = strtoull(option, NULL, 10);
2497
2498 /* compute missing values, prefer sockets over cores over threads */
2499 if (smp == 0 || sockets == 0) {
2500 sockets = sockets > 0 ? sockets : 1;
2501 cores = cores > 0 ? cores : 1;
2502 threads = threads > 0 ? threads : 1;
2503 if (smp == 0) {
2504 smp = cores * threads * sockets;
2505 } else {
2506 sockets = smp / (cores * threads);
2507 }
2508 } else {
2509 if (cores == 0) {
2510 threads = threads > 0 ? threads : 1;
2511 cores = smp / (sockets * threads);
2512 } else {
2513 if (sockets == 0) {
2514 sockets = smp / (cores * threads);
2515 } else {
2516 threads = smp / (cores * sockets);
2517 }
2518 }
2519 }
2520 smp_cpus = smp;
2521 smp_cores = cores > 0 ? cores : 1;
2522 smp_threads = threads > 0 ? threads : 1;
2523 if (max_cpus == 0)
2524 max_cpus = smp_cpus;
2525 }
2526
2527 /***********************************************************/
2528 /* USB devices */
2529
2530 static int usb_device_add(const char *devname, int is_hotplug)
2531 {
2532 const char *p;
2533 USBDevice *dev = NULL;
2534
2535 if (!usb_enabled)
2536 return -1;
2537
2538 /* drivers with .usbdevice_name entry in USBDeviceInfo */
2539 dev = usbdevice_create(devname);
2540 if (dev)
2541 goto done;
2542
2543 /* the other ones */
2544 if (strstart(devname, "host:", &p)) {
2545 dev = usb_host_device_open(p);
2546 } else if (strstart(devname, "net:", &p)) {
2547 QemuOpts *opts;
2548 int idx;
2549
2550 opts = qemu_opts_parse(&qemu_net_opts, p, NULL);
2551 if (!opts) {
2552 return -1;
2553 }
2554
2555 qemu_opt_set(opts, "type", "nic");
2556 qemu_opt_set(opts, "model", "usb");
2557
2558 idx = net_client_init(NULL, opts, 0);
2559 if (idx == -1) {
2560 return -1;
2561 }
2562
2563 dev = usb_net_init(&nd_table[idx]);
2564 } else if (!strcmp(devname, "bt") || strstart(devname, "bt:", &p)) {
2565 dev = usb_bt_init(devname[2] ? hci_init(p) :
2566 bt_new_hci(qemu_find_bt_vlan(0)));
2567 } else {
2568 return -1;
2569 }
2570 if (!dev)
2571 return -1;
2572
2573 done:
2574 return 0;
2575 }
2576
2577 static int usb_device_del(const char *devname)
2578 {
2579 int bus_num, addr;
2580 const char *p;
2581
2582 if (strstart(devname, "host:", &p))
2583 return usb_host_device_close(p);
2584
2585 if (!usb_enabled)
2586 return -1;
2587
2588 p = strchr(devname, '.');
2589 if (!p)
2590 return -1;
2591 bus_num = strtoul(devname, NULL, 0);
2592 addr = strtoul(p + 1, NULL, 0);
2593
2594 return usb_device_delete_addr(bus_num, addr);
2595 }
2596
2597 static int usb_parse(const char *cmdline)
2598 {
2599 return usb_device_add(cmdline, 0);
2600 }
2601
2602 void do_usb_add(Monitor *mon, const QDict *qdict)
2603 {
2604 usb_device_add(qdict_get_str(qdict, "devname"), 1);
2605 }
2606
2607 void do_usb_del(Monitor *mon, const QDict *qdict)
2608 {
2609 usb_device_del(qdict_get_str(qdict, "devname"));
2610 }
2611
2612 /***********************************************************/
2613 /* PCMCIA/Cardbus */
2614
2615 static struct pcmcia_socket_entry_s {
2616 PCMCIASocket *socket;
2617 struct pcmcia_socket_entry_s *next;
2618 } *pcmcia_sockets = 0;
2619
2620 void pcmcia_socket_register(PCMCIASocket *socket)
2621 {
2622 struct pcmcia_socket_entry_s *entry;
2623
2624 entry = qemu_malloc(sizeof(struct pcmcia_socket_entry_s));
2625 entry->socket = socket;
2626 entry->next = pcmcia_sockets;
2627 pcmcia_sockets = entry;
2628 }
2629
2630 void pcmcia_socket_unregister(PCMCIASocket *socket)
2631 {
2632 struct pcmcia_socket_entry_s *entry, **ptr;
2633
2634 ptr = &pcmcia_sockets;
2635 for (entry = *ptr; entry; ptr = &entry->next, entry = *ptr)
2636 if (entry->socket == socket) {
2637 *ptr = entry->next;
2638 qemu_free(entry);
2639 }
2640 }
2641
2642 void pcmcia_info(Monitor *mon)
2643 {
2644 struct pcmcia_socket_entry_s *iter;
2645
2646 if (!pcmcia_sockets)
2647 monitor_printf(mon, "No PCMCIA sockets\n");
2648
2649 for (iter = pcmcia_sockets; iter; iter = iter->next)
2650 monitor_printf(mon, "%s: %s\n", iter->socket->slot_string,
2651 iter->socket->attached ? iter->socket->card_string :
2652 "Empty");
2653 }
2654
2655 /***********************************************************/
2656 /* register display */
2657
2658 struct DisplayAllocator default_allocator = {
2659 defaultallocator_create_displaysurface,
2660 defaultallocator_resize_displaysurface,
2661 defaultallocator_free_displaysurface
2662 };
2663
2664 void register_displaystate(DisplayState *ds)
2665 {
2666 DisplayState **s;
2667 s = &display_state;
2668 while (*s != NULL)
2669 s = &(*s)->next;
2670 ds->next = NULL;
2671 *s = ds;
2672 }
2673
2674 DisplayState *get_displaystate(void)
2675 {
2676 return display_state;
2677 }
2678
2679 DisplayAllocator *register_displayallocator(DisplayState *ds, DisplayAllocator *da)
2680 {
2681 if(ds->allocator == &default_allocator) ds->allocator = da;
2682 return ds->allocator;
2683 }
2684
2685 /* dumb display */
2686
2687 static void dumb_display_init(void)
2688 {
2689 DisplayState *ds = qemu_mallocz(sizeof(DisplayState));
2690 ds->allocator = &default_allocator;
2691 ds->surface = qemu_create_displaysurface(ds, 640, 480);
2692 register_displaystate(ds);
2693 }
2694
2695 /***********************************************************/
2696 /* I/O handling */
2697
2698 typedef struct IOHandlerRecord {
2699 int fd;
2700 IOCanRWHandler *fd_read_poll;
2701 IOHandler *fd_read;
2702 IOHandler *fd_write;
2703 int deleted;
2704 void *opaque;
2705 /* temporary data */
2706 struct pollfd *ufd;
2707 struct IOHandlerRecord *next;
2708 } IOHandlerRecord;
2709
2710 static IOHandlerRecord *first_io_handler;
2711
2712 /* XXX: fd_read_poll should be suppressed, but an API change is
2713 necessary in the character devices to suppress fd_can_read(). */
2714 int qemu_set_fd_handler2(int fd,
2715 IOCanRWHandler *fd_read_poll,
2716 IOHandler *fd_read,
2717 IOHandler *fd_write,
2718 void *opaque)
2719 {
2720 IOHandlerRecord **pioh, *ioh;
2721
2722 if (!fd_read && !fd_write) {
2723 pioh = &first_io_handler;
2724 for(;;) {
2725 ioh = *pioh;
2726 if (ioh == NULL)
2727 break;
2728 if (ioh->fd == fd) {
2729 ioh->deleted = 1;
2730 break;
2731 }
2732 pioh = &ioh->next;
2733 }
2734 } else {
2735 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
2736 if (ioh->fd == fd)
2737 goto found;
2738 }
2739 ioh = qemu_mallocz(sizeof(IOHandlerRecord));
2740 ioh->next = first_io_handler;
2741 first_io_handler = ioh;
2742 found:
2743 ioh->fd = fd;
2744 ioh->fd_read_poll = fd_read_poll;
2745 ioh->fd_read = fd_read;
2746 ioh->fd_write = fd_write;
2747 ioh->opaque = opaque;
2748 ioh->deleted = 0;
2749 }
2750 return 0;
2751 }
2752
2753 int qemu_set_fd_handler(int fd,
2754 IOHandler *fd_read,
2755 IOHandler *fd_write,
2756 void *opaque)
2757 {
2758 return qemu_set_fd_handler2(fd, NULL, fd_read, fd_write, opaque);
2759 }
2760
2761 #ifdef _WIN32
2762 /***********************************************************/
2763 /* Polling handling */
2764
2765 typedef struct PollingEntry {
2766 PollingFunc *func;
2767 void *opaque;
2768 struct PollingEntry *next;
2769 } PollingEntry;
2770
2771 static PollingEntry *first_polling_entry;
2772
2773 int qemu_add_polling_cb(PollingFunc *func, void *opaque)
2774 {
2775 PollingEntry **ppe, *pe;
2776 pe = qemu_mallocz(sizeof(PollingEntry));
2777 pe->func = func;
2778 pe->opaque = opaque;
2779 for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
2780 *ppe = pe;
2781 return 0;
2782 }
2783
2784 void qemu_del_polling_cb(PollingFunc *func, void *opaque)
2785 {
2786 PollingEntry **ppe, *pe;
2787 for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) {
2788 pe = *ppe;
2789 if (pe->func == func && pe->opaque == opaque) {
2790 *ppe = pe->next;
2791 qemu_free(pe);
2792 break;
2793 }
2794 }
2795 }
2796
2797 /***********************************************************/
2798 /* Wait objects support */
2799 typedef struct WaitObjects {
2800 int num;
2801 HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
2802 WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
2803 void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
2804 } WaitObjects;
2805
2806 static WaitObjects wait_objects = {0};
2807
2808 int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
2809 {
2810 WaitObjects *w = &wait_objects;
2811
2812 if (w->num >= MAXIMUM_WAIT_OBJECTS)
2813 return -1;
2814 w->events[w->num] = handle;
2815 w->func[w->num] = func;
2816 w->opaque[w->num] = opaque;
2817 w->num++;
2818 return 0;
2819 }
2820
2821 void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
2822 {
2823 int i, found;
2824 WaitObjects *w = &wait_objects;
2825
2826 found = 0;
2827 for (i = 0; i < w->num; i++) {
2828 if (w->events[i] == handle)
2829 found = 1;
2830 if (found) {
2831 w->events[i] = w->events[i + 1];
2832 w->func[i] = w->func[i + 1];
2833 w->opaque[i] = w->opaque[i + 1];
2834 }
2835 }
2836 if (found)
2837 w->num--;
2838 }
2839 #endif
2840
2841 /***********************************************************/
2842 /* ram save/restore */
2843
2844 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
2845 #define RAM_SAVE_FLAG_COMPRESS 0x02
2846 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
2847 #define RAM_SAVE_FLAG_PAGE 0x08
2848 #define RAM_SAVE_FLAG_EOS 0x10
2849
2850 static int is_dup_page(uint8_t *page, uint8_t ch)
2851 {
2852 uint32_t val = ch << 24 | ch << 16 | ch << 8 | ch;
2853 uint32_t *array = (uint32_t *)page;
2854 int i;
2855
2856 for (i = 0; i < (TARGET_PAGE_SIZE / 4); i++) {
2857 if (array[i] != val)
2858 return 0;
2859 }
2860
2861 return 1;
2862 }
2863
2864 static int ram_save_block(QEMUFile *f)
2865 {
2866 static ram_addr_t current_addr = 0;
2867 ram_addr_t saved_addr = current_addr;
2868 ram_addr_t addr = 0;
2869 int found = 0;
2870
2871 while (addr < last_ram_offset) {
2872 if (cpu_physical_memory_get_dirty(current_addr, MIGRATION_DIRTY_FLAG)) {
2873 uint8_t *p;
2874
2875 cpu_physical_memory_reset_dirty(current_addr,
2876 current_addr + TARGET_PAGE_SIZE,
2877 MIGRATION_DIRTY_FLAG);
2878
2879 p = qemu_get_ram_ptr(current_addr);
2880
2881 if (is_dup_page(p, *p)) {
2882 qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_COMPRESS);
2883 qemu_put_byte(f, *p);
2884 } else {
2885 qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_PAGE);
2886 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
2887 }
2888
2889 found = 1;
2890 break;
2891 }
2892 addr += TARGET_PAGE_SIZE;
2893 current_addr = (saved_addr + addr) % last_ram_offset;
2894 }
2895
2896 return found;
2897 }
2898
2899 static uint64_t bytes_transferred = 0;
2900
2901 static ram_addr_t ram_save_remaining(void)
2902 {
2903 ram_addr_t addr;
2904 ram_addr_t count = 0;
2905
2906 for (addr = 0; addr < last_ram_offset; addr += TARGET_PAGE_SIZE) {
2907 if (cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG))
2908 count++;
2909 }
2910
2911 return count;
2912 }
2913
2914 uint64_t ram_bytes_remaining(void)
2915 {
2916 return ram_save_remaining() * TARGET_PAGE_SIZE;
2917 }
2918
2919 uint64_t ram_bytes_transferred(void)
2920 {
2921 return bytes_transferred;
2922 }
2923
2924 uint64_t ram_bytes_total(void)
2925 {
2926 return last_ram_offset;
2927 }
2928
2929 static int ram_save_live(QEMUFile *f, int stage, void *opaque)
2930 {
2931 ram_addr_t addr;
2932 uint64_t bytes_transferred_last;
2933 double bwidth = 0;
2934 uint64_t expected_time = 0;
2935
2936 if (cpu_physical_sync_dirty_bitmap(0, TARGET_PHYS_ADDR_MAX) != 0) {
2937 qemu_file_set_error(f);
2938 return 0;
2939 }
2940
2941 if (stage == 1) {
2942 /* Make sure all dirty bits are set */
2943 for (addr = 0; addr < last_ram_offset; addr += TARGET_PAGE_SIZE) {
2944 if (!cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG))
2945 cpu_physical_memory_set_dirty(addr);
2946 }
2947
2948 /* Enable dirty memory tracking */
2949 cpu_physical_memory_set_dirty_tracking(1);
2950
2951 qemu_put_be64(f, last_ram_offset | RAM_SAVE_FLAG_MEM_SIZE);
2952 }
2953
2954 bytes_transferred_last = bytes_transferred;
2955 bwidth = get_clock();
2956
2957 while (!qemu_file_rate_limit(f)) {
2958 int ret;
2959
2960 ret = ram_save_block(f);
2961 bytes_transferred += ret * TARGET_PAGE_SIZE;
2962 if (ret == 0) /* no more blocks */
2963 break;
2964 }
2965
2966 bwidth = get_clock() - bwidth;
2967 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
2968
2969 /* if we haven't transferred anything this round, force expected_time to a
2970 * a very high value, but without crashing */
2971 if (bwidth == 0)
2972 bwidth = 0.000001;
2973
2974 /* try transferring iterative blocks of memory */
2975
2976 if (stage == 3) {
2977
2978 /* flush all remaining blocks regardless of rate limiting */
2979 while (ram_save_block(f) != 0) {
2980 bytes_transferred += TARGET_PAGE_SIZE;
2981 }
2982 cpu_physical_memory_set_dirty_tracking(0);
2983 }
2984
2985 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
2986
2987 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
2988
2989 return (stage == 2) && (expected_time <= migrate_max_downtime());
2990 }
2991
2992 static int ram_load(QEMUFile *f, void *opaque, int version_id)
2993 {
2994 ram_addr_t addr;
2995 int flags;
2996
2997 if (version_id != 3)
2998 return -EINVAL;
2999
3000 do {
3001 addr = qemu_get_be64(f);
3002
3003 flags = addr & ~TARGET_PAGE_MASK;
3004 addr &= TARGET_PAGE_MASK;
3005
3006 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
3007 if (addr != last_ram_offset)
3008 return -EINVAL;
3009 }
3010
3011 if (flags & RAM_SAVE_FLAG_COMPRESS) {
3012 uint8_t ch = qemu_get_byte(f);
3013 memset(qemu_get_ram_ptr(addr), ch, TARGET_PAGE_SIZE);
3014 #ifndef _WIN32
3015 if (ch == 0 &&
3016 (!kvm_enabled() || kvm_has_sync_mmu())) {
3017 madvise(qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE, MADV_DONTNEED);
3018 }
3019 #endif
3020 } else if (flags & RAM_SAVE_FLAG_PAGE)
3021 qemu_get_buffer(f, qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE);
3022 } while (!(flags & RAM_SAVE_FLAG_EOS));
3023
3024 return 0;
3025 }
3026
3027 void qemu_service_io(void)
3028 {
3029 qemu_notify_event();
3030 }
3031
3032 /***********************************************************/
3033 /* machine registration */
3034
3035 static QEMUMachine *first_machine = NULL;
3036 QEMUMachine *current_machine = NULL;
3037
3038 int qemu_register_machine(QEMUMachine *m)
3039 {
3040 QEMUMachine **pm;
3041 pm = &first_machine;
3042 while (*pm != NULL)
3043 pm = &(*pm)->next;
3044 m->next = NULL;
3045 *pm = m;
3046 return 0;
3047 }
3048
3049 static QEMUMachine *find_machine(const char *name)
3050 {
3051 QEMUMachine *m;
3052
3053 for(m = first_machine; m != NULL; m = m->next) {
3054 if (!strcmp(m->name, name))
3055 return m;
3056 if (m->alias && !strcmp(m->alias, name))
3057 return m;
3058 }
3059 return NULL;
3060 }
3061
3062 static QEMUMachine *find_default_machine(void)
3063 {
3064 QEMUMachine *m;
3065
3066 for(m = first_machine; m != NULL; m = m->next) {
3067 if (m->is_default) {
3068 return m;
3069 }
3070 }
3071 return NULL;
3072 }
3073
3074 /***********************************************************/
3075 /* main execution loop */
3076
3077 static void gui_update(void *opaque)
3078 {
3079 uint64_t interval = GUI_REFRESH_INTERVAL;
3080 DisplayState *ds = opaque;
3081 DisplayChangeListener *dcl = ds->listeners;
3082
3083 dpy_refresh(ds);
3084
3085 while (dcl != NULL) {
3086 if (dcl->gui_timer_interval &&
3087 dcl->gui_timer_interval < interval)
3088 interval = dcl->gui_timer_interval;
3089 dcl = dcl->next;
3090 }
3091 qemu_mod_timer(ds->gui_timer, interval + qemu_get_clock(rt_clock));
3092 }
3093
3094 static void nographic_update(void *opaque)
3095 {
3096 uint64_t interval = GUI_REFRESH_INTERVAL;
3097
3098 qemu_mod_timer(nographic_timer, interval + qemu_get_clock(rt_clock));
3099 }
3100
3101 struct vm_change_state_entry {
3102 VMChangeStateHandler *cb;
3103 void *opaque;
3104 QLIST_ENTRY (vm_change_state_entry) entries;
3105 };
3106
3107 static QLIST_HEAD(vm_change_state_head, vm_change_state_entry) vm_change_state_head;
3108
3109 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
3110 void *opaque)
3111 {
3112 VMChangeStateEntry *e;
3113
3114 e = qemu_mallocz(sizeof (*e));
3115
3116 e->cb = cb;
3117 e->opaque = opaque;
3118 QLIST_INSERT_HEAD(&vm_change_state_head, e, entries);
3119 return e;
3120 }
3121
3122 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
3123 {
3124 QLIST_REMOVE (e, entries);
3125 qemu_free (e);
3126 }
3127
3128 static void vm_state_notify(int running, int reason)
3129 {
3130 VMChangeStateEntry *e;
3131
3132 for (e = vm_change_state_head.lh_first; e; e = e->entries.le_next) {
3133 e->cb(e->opaque, running, reason);
3134 }
3135 }
3136
3137 static void resume_all_vcpus(void);
3138 static void pause_all_vcpus(void);
3139
3140 void vm_start(void)
3141 {
3142 if (!vm_running) {
3143 cpu_enable_ticks();
3144 vm_running = 1;
3145 vm_state_notify(1, 0);
3146 qemu_rearm_alarm_timer(alarm_timer);
3147 resume_all_vcpus();
3148 }
3149 }
3150
3151 /* reset/shutdown handler */
3152
3153 typedef struct QEMUResetEntry {
3154 QTAILQ_ENTRY(QEMUResetEntry) entry;
3155 QEMUResetHandler *func;
3156 void *opaque;
3157 } QEMUResetEntry;
3158
3159 static QTAILQ_HEAD(reset_handlers, QEMUResetEntry) reset_handlers =
3160 QTAILQ_HEAD_INITIALIZER(reset_handlers);
3161 static int reset_requested;
3162 static int shutdown_requested;
3163 static int powerdown_requested;
3164 static int debug_requested;
3165 static int vmstop_requested;
3166
3167 int qemu_shutdown_requested(void)
3168 {
3169 int r = shutdown_requested;
3170 shutdown_requested = 0;
3171 return r;
3172 }
3173
3174 int qemu_reset_requested(void)
3175 {
3176 int r = reset_requested;
3177 reset_requested = 0;
3178 return r;
3179 }
3180
3181 int qemu_powerdown_requested(void)
3182 {
3183 int r = powerdown_requested;
3184 powerdown_requested = 0;
3185 return r;
3186 }
3187
3188 static int qemu_debug_requested(void)
3189 {
3190 int r = debug_requested;
3191 debug_requested = 0;
3192 return r;
3193 }
3194
3195 static int qemu_vmstop_requested(void)
3196 {
3197 int r = vmstop_requested;
3198 vmstop_requested = 0;
3199 return r;
3200 }
3201
3202 static void do_vm_stop(int reason)
3203 {
3204 if (vm_running) {
3205 cpu_disable_ticks();
3206 vm_running = 0;
3207 pause_all_vcpus();
3208 vm_state_notify(0, reason);
3209 }
3210 }
3211
3212 void qemu_register_reset(QEMUResetHandler *func, void *opaque)
3213 {
3214 QEMUResetEntry *re = qemu_mallocz(sizeof(QEMUResetEntry));
3215
3216 re->func = func;
3217 re->opaque = opaque;
3218 QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
3219 }
3220
3221 void qemu_unregister_reset(QEMUResetHandler *func, void *opaque)
3222 {
3223 QEMUResetEntry *re;
3224
3225 QTAILQ_FOREACH(re, &reset_handlers, entry) {
3226 if (re->func == func && re->opaque == opaque) {
3227 QTAILQ_REMOVE(&reset_handlers, re, entry);
3228 qemu_free(re);
3229 return;
3230 }
3231 }
3232 }
3233
3234 void qemu_system_reset(void)
3235 {
3236 QEMUResetEntry *re, *nre;
3237
3238 /* reset all devices */
3239 QTAILQ_FOREACH_SAFE(re, &reset_handlers, entry, nre) {
3240 re->func(re->opaque);
3241 }
3242 }
3243
3244 void qemu_system_reset_request(void)
3245 {
3246 if (no_reboot) {
3247 shutdown_requested = 1;
3248 } else {
3249 reset_requested = 1;
3250 }
3251 qemu_notify_event();
3252 }
3253
3254 void qemu_system_shutdown_request(void)
3255 {
3256 shutdown_requested = 1;
3257 qemu_notify_event();
3258 }
3259
3260 void qemu_system_powerdown_request(void)
3261 {
3262 powerdown_requested = 1;
3263 qemu_notify_event();
3264 }
3265
3266 #ifdef CONFIG_IOTHREAD
3267 static void qemu_system_vmstop_request(int reason)
3268 {
3269 vmstop_requested = reason;
3270 qemu_notify_event();
3271 }
3272 #endif
3273
3274 #ifndef _WIN32
3275 static int io_thread_fd = -1;
3276
3277 static void qemu_event_increment(void)
3278 {
3279 static const char byte = 0;
3280
3281 if (io_thread_fd == -1)
3282 return;
3283
3284 write(io_thread_fd, &byte, sizeof(byte));
3285 }
3286
3287 static void qemu_event_read(void *opaque)
3288 {
3289 int fd = (unsigned long)opaque;
3290 ssize_t len;
3291
3292 /* Drain the notify pipe */
3293 do {
3294 char buffer[512];
3295 len = read(fd, buffer, sizeof(buffer));
3296 } while ((len == -1 && errno == EINTR) || len > 0);
3297 }
3298
3299 static int qemu_event_init(void)
3300 {
3301 int err;
3302 int fds[2];
3303
3304 err = pipe(fds);
3305 if (err == -1)
3306 return -errno;
3307
3308 err = fcntl_setfl(fds[0], O_NONBLOCK);
3309 if (err < 0)
3310 goto fail;
3311
3312 err = fcntl_setfl(fds[1], O_NONBLOCK);
3313 if (err < 0)
3314 goto fail;
3315
3316 qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL,
3317 (void *)(unsigned long)fds[0]);
3318
3319 io_thread_fd = fds[1];
3320 return 0;
3321
3322 fail:
3323 close(fds[0]);
3324 close(fds[1]);
3325 return err;
3326 }
3327 #else
3328 HANDLE qemu_event_handle;
3329
3330 static void dummy_event_handler(void *opaque)
3331 {
3332 }
3333
3334 static int qemu_event_init(void)
3335 {
3336 qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
3337 if (!qemu_event_handle) {
3338 fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
3339 return -1;
3340 }
3341 qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
3342 return 0;
3343 }
3344
3345 static void qemu_event_increment(void)
3346 {
3347 if (!SetEvent(qemu_event_handle)) {
3348 fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
3349 GetLastError());
3350 exit (1);
3351 }
3352 }
3353 #endif
3354
3355 static int cpu_can_run(CPUState *env)
3356 {
3357 if (env->stop)
3358 return 0;
3359 if (env->stopped)
3360 return 0;
3361 return 1;
3362 }
3363
3364 #ifndef CONFIG_IOTHREAD
3365 static int qemu_init_main_loop(void)
3366 {
3367 return qemu_event_init();
3368 }
3369
3370 void qemu_init_vcpu(void *_env)
3371 {
3372 CPUState *env = _env;
3373
3374 if (kvm_enabled())
3375 kvm_init_vcpu(env);
3376 env->nr_cores = smp_cores;
3377 env->nr_threads = smp_threads;
3378 return;
3379 }
3380
3381 int qemu_cpu_self(void *env)
3382 {
3383 return 1;
3384 }
3385
3386 static void resume_all_vcpus(void)
3387 {
3388 }
3389
3390 static void pause_all_vcpus(void)
3391 {
3392 }
3393
3394 void qemu_cpu_kick(void *env)
3395 {
3396 return;
3397 }
3398
3399 void qemu_notify_event(void)
3400 {
3401 CPUState *env = cpu_single_env;
3402
3403 if (env) {
3404 cpu_exit(env);
3405 }
3406 }
3407
3408 void qemu_mutex_lock_iothread(void) {}
3409 void qemu_mutex_unlock_iothread(void) {}
3410
3411 void vm_stop(int reason)
3412 {
3413 do_vm_stop(reason);
3414 }
3415
3416 #else /* CONFIG_IOTHREAD */
3417
3418 #include "qemu-thread.h"
3419
3420 QemuMutex qemu_global_mutex;
3421 static QemuMutex qemu_fair_mutex;
3422
3423 static QemuThread io_thread;
3424
3425 static QemuThread *tcg_cpu_thread;
3426 static QemuCond *tcg_halt_cond;
3427
3428 static int qemu_system_ready;
3429 /* cpu creation */
3430 static QemuCond qemu_cpu_cond;
3431 /* system init */
3432 static QemuCond qemu_system_cond;
3433 static QemuCond qemu_pause_cond;
3434
3435 static void block_io_signals(void);
3436 static void unblock_io_signals(void);
3437 static int tcg_has_work(void);
3438
3439 static int qemu_init_main_loop(void)
3440 {
3441 int ret;
3442
3443 ret = qemu_event_init();
3444 if (ret)
3445 return ret;
3446
3447 qemu_cond_init(&qemu_pause_cond);
3448 qemu_mutex_init(&qemu_fair_mutex);
3449 qemu_mutex_init(&qemu_global_mutex);
3450 qemu_mutex_lock(&qemu_global_mutex);
3451
3452 unblock_io_signals();
3453 qemu_thread_self(&io_thread);
3454
3455 return 0;
3456 }
3457
3458 static void qemu_wait_io_event(CPUState *env)
3459 {
3460 while (!tcg_has_work())
3461 qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
3462
3463 qemu_mutex_unlock(&qemu_global_mutex);
3464
3465 /*
3466 * Users of qemu_global_mutex can be starved, having no chance
3467 * to acquire it since this path will get to it first.
3468 * So use another lock to provide fairness.
3469 */
3470 qemu_mutex_lock(&qemu_fair_mutex);
3471 qemu_mutex_unlock(&qemu_fair_mutex);
3472
3473 qemu_mutex_lock(&qemu_global_mutex);
3474 if (env->stop) {
3475 env->stop = 0;
3476 env->stopped = 1;
3477 qemu_cond_signal(&qemu_pause_cond);
3478 }
3479 }
3480
3481 static int qemu_cpu_exec(CPUState *env);
3482
3483 static void *kvm_cpu_thread_fn(void *arg)
3484 {
3485 CPUState *env = arg;
3486
3487 block_io_signals();
3488 qemu_thread_self(env->thread);
3489 if (kvm_enabled())
3490 kvm_init_vcpu(env);
3491
3492 /* signal CPU creation */
3493 qemu_mutex_lock(&qemu_global_mutex);
3494 env->created = 1;
3495 qemu_cond_signal(&qemu_cpu_cond);
3496
3497 /* and wait for machine initialization */
3498 while (!qemu_system_ready)
3499 qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
3500
3501 while (1) {
3502 if (cpu_can_run(env))
3503 qemu_cpu_exec(env);
3504 qemu_wait_io_event(env);
3505 }
3506
3507 return NULL;
3508 }
3509
3510 static void tcg_cpu_exec(void);
3511
3512 static void *tcg_cpu_thread_fn(void *arg)
3513 {
3514 CPUState *env = arg;
3515
3516 block_io_signals();
3517 qemu_thread_self(env->thread);
3518
3519 /* signal CPU creation */
3520 qemu_mutex_lock(&qemu_global_mutex);
3521 for (env = first_cpu; env != NULL; env = env->next_cpu)
3522 env->created = 1;
3523 qemu_cond_signal(&qemu_cpu_cond);
3524
3525 /* and wait for machine initialization */
3526 while (!qemu_system_ready)
3527 qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
3528
3529 while (1) {
3530 tcg_cpu_exec();
3531 qemu_wait_io_event(cur_cpu);
3532 }
3533
3534 return NULL;
3535 }
3536
3537 void qemu_cpu_kick(void *_env)
3538 {
3539 CPUState *env = _env;
3540 qemu_cond_broadcast(env->halt_cond);
3541 if (kvm_enabled())
3542 qemu_thread_signal(env->thread, SIGUSR1);
3543 }
3544
3545 int qemu_cpu_self(void *_env)
3546 {
3547 CPUState *env = _env;
3548 QemuThread this;
3549
3550 qemu_thread_self(&this);
3551
3552 return qemu_thread_equal(&this, env->thread);
3553 }
3554
3555 static void cpu_signal(int sig)
3556 {
3557 if (cpu_single_env)
3558 cpu_exit(cpu_single_env);
3559 }
3560
3561 static void block_io_signals(void)
3562 {
3563 sigset_t set;
3564 struct sigaction sigact;
3565
3566 sigemptyset(&set);
3567 sigaddset(&set, SIGUSR2);
3568 sigaddset(&set, SIGIO);
3569 sigaddset(&set, SIGALRM);
3570 pthread_sigmask(SIG_BLOCK, &set, NULL);
3571
3572 sigemptyset(&set);
3573 sigaddset(&set, SIGUSR1);
3574 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
3575
3576 memset(&sigact, 0, sizeof(sigact));
3577 sigact.sa_handler = cpu_signal;
3578 sigaction(SIGUSR1, &sigact, NULL);
3579 }
3580
3581 static void unblock_io_signals(void)
3582 {
3583 sigset_t set;
3584
3585 sigemptyset(&set);
3586 sigaddset(&set, SIGUSR2);
3587 sigaddset(&set, SIGIO);
3588 sigaddset(&set, SIGALRM);
3589 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
3590
3591 sigemptyset(&set);
3592 sigaddset(&set, SIGUSR1);
3593 pthread_sigmask(SIG_BLOCK, &set, NULL);
3594 }
3595
3596 static void qemu_signal_lock(unsigned int msecs)
3597 {
3598 qemu_mutex_lock(&qemu_fair_mutex);
3599
3600 while (qemu_mutex_trylock(&qemu_global_mutex)) {
3601 qemu_thread_signal(tcg_cpu_thread, SIGUSR1);
3602 if (!qemu_mutex_timedlock(&qemu_global_mutex, msecs))
3603 break;
3604 }
3605 qemu_mutex_unlock(&qemu_fair_mutex);
3606 }
3607
3608 void qemu_mutex_lock_iothread(void)
3609 {
3610 if (kvm_enabled()) {
3611 qemu_mutex_lock(&qemu_fair_mutex);
3612 qemu_mutex_lock(&qemu_global_mutex);
3613 qemu_mutex_unlock(&qemu_fair_mutex);
3614 } else
3615 qemu_signal_lock(100);
3616 }
3617
3618 void qemu_mutex_unlock_iothread(void)
3619 {
3620 qemu_mutex_unlock(&qemu_global_mutex);
3621 }
3622
3623 static int all_vcpus_paused(void)
3624 {
3625 CPUState *penv = first_cpu;
3626
3627 while (penv) {
3628 if (!penv->stopped)
3629 return 0;
3630 penv = (CPUState *)penv->next_cpu;
3631 }
3632
3633 return 1;
3634 }
3635
3636 static void pause_all_vcpus(void)
3637 {
3638 CPUState *penv = first_cpu;
3639
3640 while (penv) {
3641 penv->stop = 1;
3642 qemu_thread_signal(penv->thread, SIGUSR1);
3643 qemu_cpu_kick(penv);
3644 penv = (CPUState *)penv->next_cpu;
3645 }
3646
3647 while (!all_vcpus_paused()) {
3648 qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
3649 penv = first_cpu;
3650 while (penv) {
3651 qemu_thread_signal(penv->thread, SIGUSR1);
3652 penv = (CPUState *)penv->next_cpu;
3653 }
3654 }
3655 }
3656
3657 static void resume_all_vcpus(void)
3658 {
3659 CPUState *penv = first_cpu;
3660
3661 while (penv) {
3662 penv->stop = 0;
3663 penv->stopped = 0;
3664 qemu_thread_signal(penv->thread, SIGUSR1);
3665 qemu_cpu_kick(penv);
3666 penv = (CPUState *)penv->next_cpu;
3667 }
3668 }
3669
3670 static void tcg_init_vcpu(void *_env)
3671 {
3672 CPUState *env = _env;
3673 /* share a single thread for all cpus with TCG */
3674 if (!tcg_cpu_thread) {
3675 env->thread = qemu_mallocz(sizeof(QemuThread));
3676 env->halt_cond = qemu_mallocz(sizeof(QemuCond));
3677 qemu_cond_init(env->halt_cond);
3678 qemu_thread_create(env->thread, tcg_cpu_thread_fn, env);
3679 while (env->created == 0)
3680 qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
3681 tcg_cpu_thread = env->thread;
3682 tcg_halt_cond = env->halt_cond;
3683 } else {
3684 env->thread = tcg_cpu_thread;
3685 env->halt_cond = tcg_halt_cond;
3686 }
3687 }
3688
3689 static void kvm_start_vcpu(CPUState *env)
3690 {
3691 env->thread = qemu_mallocz(sizeof(QemuThread));
3692 env->halt_cond = qemu_mallocz(sizeof(QemuCond));
3693 qemu_cond_init(env->halt_cond);
3694 qemu_thread_create(env->thread, kvm_cpu_thread_fn, env);
3695 while (env->created == 0)
3696 qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
3697 }
3698
3699 void qemu_init_vcpu(void *_env)
3700 {
3701 CPUState *env = _env;
3702
3703 if (kvm_enabled())
3704 kvm_start_vcpu(env);
3705 else
3706 tcg_init_vcpu(env);
3707 env->nr_cores = smp_cores;
3708 env->nr_threads = smp_threads;
3709 }
3710
3711 void qemu_notify_event(void)
3712 {
3713 qemu_event_increment();
3714 }
3715
3716 void vm_stop(int reason)
3717 {
3718 QemuThread me;
3719 qemu_thread_self(&me);
3720
3721 if (!qemu_thread_equal(&me, &io_thread)) {
3722 qemu_system_vmstop_request(reason);
3723 /*
3724 * FIXME: should not return to device code in case
3725 * vm_stop() has been requested.
3726 */
3727 if (cpu_single_env) {
3728 cpu_exit(cpu_single_env);
3729 cpu_single_env->stop = 1;
3730 }
3731 return;
3732 }
3733 do_vm_stop(reason);
3734 }
3735
3736 #endif
3737
3738
3739 #ifdef _WIN32
3740 static void host_main_loop_wait(int *timeout)
3741 {
3742 int ret, ret2, i;
3743 PollingEntry *pe;
3744
3745
3746 /* XXX: need to suppress polling by better using win32 events */
3747 ret = 0;
3748 for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
3749 ret |= pe->func(pe->opaque);
3750 }
3751 if (ret == 0) {
3752 int err;
3753 WaitObjects *w = &wait_objects;
3754
3755 ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
3756 if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
3757 if (w->func[ret - WAIT_OBJECT_0])
3758 w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
3759
3760 /* Check for additional signaled events */
3761 for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
3762
3763 /* Check if event is signaled */
3764 ret2 = WaitForSingleObject(w->events[i], 0);
3765 if(ret2 == WAIT_OBJECT_0) {
3766 if (w->func[i])
3767 w->func[i](w->opaque[i]);
3768 } else if (ret2 == WAIT_TIMEOUT) {
3769 } else {
3770 err = GetLastError();
3771 fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
3772 }
3773 }
3774 } else if (ret == WAIT_TIMEOUT) {
3775 } else {
3776 err = GetLastError();
3777 fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
3778 }
3779 }
3780
3781 *timeout = 0;
3782 }
3783 #else
3784 static void host_main_loop_wait(int *timeout)
3785 {
3786 }
3787 #endif
3788
3789 void main_loop_wait(int timeout)
3790 {
3791 IOHandlerRecord *ioh;
3792 fd_set rfds, wfds, xfds;
3793 int ret, nfds;
3794 struct timeval tv;
3795
3796 qemu_bh_update_timeout(&timeout);
3797
3798 host_main_loop_wait(&timeout);
3799
3800 /* poll any events */
3801 /* XXX: separate device handlers from system ones */
3802 nfds = -1;
3803 FD_ZERO(&rfds);
3804 FD_ZERO(&wfds);
3805 FD_ZERO(&xfds);
3806 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
3807 if (ioh->deleted)
3808 continue;
3809 if (ioh->fd_read &&
3810 (!ioh->fd_read_poll ||
3811 ioh->fd_read_poll(ioh->opaque) != 0)) {
3812 FD_SET(ioh->fd, &rfds);
3813 if (ioh->fd > nfds)
3814 nfds = ioh->fd;
3815 }
3816 if (ioh->fd_write) {
3817 FD_SET(ioh->fd, &wfds);
3818 if (ioh->fd > nfds)
3819 nfds = ioh->fd;
3820 }
3821 }
3822
3823 tv.tv_sec = timeout / 1000;
3824 tv.tv_usec = (timeout % 1000) * 1000;
3825
3826 slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
3827
3828 qemu_mutex_unlock_iothread();
3829 ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
3830 qemu_mutex_lock_iothread();
3831 if (ret > 0) {
3832 IOHandlerRecord **pioh;
3833
3834 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
3835 if (!ioh->deleted && ioh->fd_read && FD_ISSET(ioh->fd, &rfds)) {
3836 ioh->fd_read(ioh->opaque);
3837 }
3838 if (!ioh->deleted && ioh->fd_write && FD_ISSET(ioh->fd, &wfds)) {
3839 ioh->fd_write(ioh->opaque);
3840 }
3841 }
3842
3843 /* remove deleted IO handlers */
3844 pioh = &first_io_handler;
3845 while (*pioh) {
3846 ioh = *pioh;
3847 if (ioh->deleted) {
3848 *pioh = ioh->next;
3849 qemu_free(ioh);
3850 } else
3851 pioh = &ioh->next;
3852 }
3853 }
3854
3855 slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0));
3856
3857 /* rearm timer, if not periodic */
3858 if (alarm_timer->flags & ALARM_FLAG_EXPIRED) {
3859 alarm_timer->flags &= ~ALARM_FLAG_EXPIRED;
3860 qemu_rearm_alarm_timer(alarm_timer);
3861 }
3862
3863 /* vm time timers */
3864 if (vm_running) {
3865 if (!cur_cpu || likely(!(cur_cpu->singlestep_enabled & SSTEP_NOTIMER)))
3866 qemu_run_timers(&active_timers[QEMU_CLOCK_VIRTUAL],
3867 qemu_get_clock(vm_clock));
3868 }
3869
3870 /* real time timers */
3871 qemu_run_timers(&active_timers[QEMU_CLOCK_REALTIME],
3872 qemu_get_clock(rt_clock));
3873
3874 qemu_run_timers(&active_timers[QEMU_CLOCK_HOST],
3875 qemu_get_clock(host_clock));
3876
3877 /* Check bottom-halves last in case any of the earlier events triggered
3878 them. */
3879 qemu_bh_poll();
3880
3881 }
3882
3883 static int qemu_cpu_exec(CPUState *env)
3884 {
3885 int ret;
3886 #ifdef CONFIG_PROFILER
3887 int64_t ti;
3888 #endif
3889
3890 #ifdef CONFIG_PROFILER
3891 ti = profile_getclock();
3892 #endif
3893 if (use_icount) {
3894 int64_t count;
3895 int decr;
3896 qemu_icount -= (env->icount_decr.u16.low + env->icount_extra);
3897 env->icount_decr.u16.low = 0;
3898 env->icount_extra = 0;
3899 count = qemu_next_deadline();
3900 count = (count + (1 << icount_time_shift) - 1)
3901 >> icount_time_shift;
3902 qemu_icount += count;
3903 decr = (count > 0xffff) ? 0xffff : count;
3904 count -= decr;
3905 env->icount_decr.u16.low = decr;
3906 env->icount_extra = count;
3907 }
3908 ret = cpu_exec(env);
3909 #ifdef CONFIG_PROFILER
3910 qemu_time += profile_getclock() - ti;
3911 #endif
3912 if (use_icount) {
3913 /* Fold pending instructions back into the
3914 instruction counter, and clear the interrupt flag. */
3915 qemu_icount -= (env->icount_decr.u16.low
3916 + env->icount_extra);
3917 env->icount_decr.u32 = 0;
3918 env->icount_extra = 0;
3919 }
3920 return ret;
3921 }
3922
3923 static void tcg_cpu_exec(void)
3924 {
3925 int ret = 0;
3926
3927 if (next_cpu == NULL)
3928 next_cpu = first_cpu;
3929 for (; next_cpu != NULL; next_cpu = next_cpu->next_cpu) {
3930 CPUState *env = cur_cpu = next_cpu;
3931
3932 if (!vm_running)
3933 break;
3934 if (timer_alarm_pending) {
3935 timer_alarm_pending = 0;
3936 break;
3937 }
3938 if (cpu_can_run(env))
3939 ret = qemu_cpu_exec(env);
3940 if (ret == EXCP_DEBUG) {
3941 gdb_set_stop_cpu(env);
3942 debug_requested = 1;
3943 break;
3944 }
3945 }
3946 }
3947
3948 static int cpu_has_work(CPUState *env)
3949 {
3950 if (env->stop)
3951 return 1;
3952 if (env->stopped)
3953 return 0;
3954 if (!env->halted)
3955 return 1;
3956 if (qemu_cpu_has_work(env))
3957 return 1;
3958 return 0;
3959 }
3960
3961 static int tcg_has_work(void)
3962 {
3963 CPUState *env;
3964
3965 for (env = first_cpu; env != NULL; env = env->next_cpu)
3966 if (cpu_has_work(env))
3967 return 1;
3968 return 0;
3969 }
3970
3971 static int qemu_calculate_timeout(void)
3972 {
3973 #ifndef CONFIG_IOTHREAD
3974 int timeout;
3975
3976 if (!vm_running)
3977 timeout = 5000;
3978 else if (tcg_has_work())
3979 timeout = 0;
3980 else if (!use_icount)
3981 timeout = 5000;
3982 else {
3983 /* XXX: use timeout computed from timers */
3984 int64_t add;
3985 int64_t delta;
3986 /* Advance virtual time to the next event. */
3987 if (use_icount == 1) {
3988 /* When not using an adaptive execution frequency
3989 we tend to get badly out of sync with real time,
3990 so just delay for a reasonable amount of time. */
3991 delta = 0;
3992 } else {
3993 delta = cpu_get_icount() - cpu_get_clock();
3994 }
3995 if (delta > 0) {
3996 /* If virtual time is ahead of real time then just
3997 wait for IO. */
3998 timeout = (delta / 1000000) + 1;
3999 } else {
4000 /* Wait for either IO to occur or the next
4001 timer event. */
4002 add = qemu_next_deadline();
4003 /* We advance the timer before checking for IO.
4004 Limit the amount we advance so that early IO
4005 activity won't get the guest too far ahead. */
4006 if (add > 10000000)
4007 add = 10000000;
4008 delta += add;
4009 add = (add + (1 << icount_time_shift) - 1)
4010 >> icount_time_shift;
4011 qemu_icount += add;
4012 timeout = delta / 1000000;
4013 if (timeout < 0)
4014 timeout = 0;
4015 }
4016 }
4017
4018 return timeout;
4019 #else /* CONFIG_IOTHREAD */
4020 return 1000;
4021 #endif
4022 }
4023
4024 static int vm_can_run(void)
4025 {
4026 if (powerdown_requested)
4027 return 0;
4028 if (reset_requested)
4029 return 0;
4030 if (shutdown_requested)
4031 return 0;
4032 if (debug_requested)
4033 return 0;
4034 return 1;
4035 }
4036
4037 qemu_irq qemu_system_powerdown;
4038
4039 static void main_loop(void)
4040 {
4041 int r;
4042
4043 #ifdef CONFIG_IOTHREAD
4044 qemu_system_ready = 1;
4045 qemu_cond_broadcast(&qemu_system_cond);
4046 #endif
4047 qemu_system_reset();
4048
4049 for (;;) {
4050 do {
4051 #ifdef CONFIG_PROFILER
4052 int64_t ti;
4053 #endif
4054 #ifndef CONFIG_IOTHREAD
4055 tcg_cpu_exec();
4056 #endif
4057 #ifdef CONFIG_PROFILER
4058 ti = profile_getclock();
4059 #endif
4060 main_loop_wait(qemu_calculate_timeout());
4061 #ifdef CONFIG_PROFILER
4062 dev_time += profile_getclock() - ti;
4063 #endif
4064 } while (vm_can_run());
4065
4066 if (qemu_debug_requested())
4067 vm_stop(EXCP_DEBUG);
4068 if (qemu_shutdown_requested()) {
4069 if (no_shutdown) {
4070 vm_stop(0);
4071 no_shutdown = 0;
4072 } else
4073 break;
4074 }
4075 if (qemu_reset_requested()) {
4076 pause_all_vcpus();
4077 qemu_system_reset();
4078 resume_all_vcpus();
4079 }
4080 if (qemu_powerdown_requested()) {
4081 qemu_irq_raise(qemu_system_powerdown);
4082 }
4083 if ((r = qemu_vmstop_requested()))
4084 vm_stop(r);
4085 }
4086 pause_all_vcpus();
4087 }
4088
4089 static void version(void)
4090 {
4091 printf("QEMU PC emulator version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n");
4092 }
4093
4094 static void help(int exitcode)
4095 {
4096 version();
4097 printf("usage: %s [options] [disk_image]\n"
4098 "\n"
4099 "'disk_image' is a raw hard image image for IDE hard disk 0\n"
4100 "\n"
4101 #define DEF(option, opt_arg, opt_enum, opt_help) \
4102 opt_help
4103 #define DEFHEADING(text) stringify(text) "\n"
4104 #include "qemu-options.h"
4105 #undef DEF
4106 #undef DEFHEADING
4107 #undef GEN_DOCS
4108 "\n"
4109 "During emulation, the following keys are useful:\n"
4110 "ctrl-alt-f toggle full screen\n"
4111 "ctrl-alt-n switch to virtual console 'n'\n"
4112 "ctrl-alt toggle mouse and keyboard grab\n"
4113 "\n"
4114 "When using -nographic, press 'ctrl-a h' to get some help.\n"
4115 ,
4116 "qemu",
4117 DEFAULT_RAM_SIZE,
4118 #ifndef _WIN32
4119 DEFAULT_NETWORK_SCRIPT,
4120 DEFAULT_NETWORK_DOWN_SCRIPT,
4121 #endif
4122 DEFAULT_GDBSTUB_PORT,
4123 "/tmp/qemu.log");
4124 exit(exitcode);
4125 }
4126
4127 #define HAS_ARG 0x0001
4128
4129 enum {
4130 #define DEF(option, opt_arg, opt_enum, opt_help) \
4131 opt_enum,
4132 #define DEFHEADING(text)
4133 #include "qemu-options.h"
4134 #undef DEF
4135 #undef DEFHEADING
4136 #undef GEN_DOCS
4137 };
4138
4139 typedef struct QEMUOption {
4140 const char *name;
4141 int flags;
4142 int index;
4143 } QEMUOption;
4144
4145 static const QEMUOption qemu_options[] = {
4146 { "h", 0, QEMU_OPTION_h },
4147 #define DEF(option, opt_arg, opt_enum, opt_help) \
4148 { option, opt_arg, opt_enum },
4149 #define DEFHEADING(text)
4150 #include "qemu-options.h"
4151 #undef DEF
4152 #undef DEFHEADING
4153 #undef GEN_DOCS
4154 { NULL },
4155 };
4156
4157 #ifdef HAS_AUDIO
4158 struct soundhw soundhw[] = {
4159 #ifdef HAS_AUDIO_CHOICE
4160 #if defined(TARGET_I386) || defined(TARGET_MIPS)
4161 {
4162 "pcspk",
4163 "PC speaker",
4164 0,
4165 1,
4166 { .init_isa = pcspk_audio_init }
4167 },
4168 #endif
4169
4170 #ifdef CONFIG_SB16
4171 {
4172 "sb16",
4173 "Creative Sound Blaster 16",
4174 0,
4175 1,
4176 { .init_isa = SB16_init }
4177 },
4178 #endif
4179
4180 #ifdef CONFIG_CS4231A
4181 {
4182 "cs4231a",
4183 "CS4231A",
4184 0,
4185 1,
4186 { .init_isa = cs4231a_init }
4187 },
4188 #endif
4189
4190 #ifdef CONFIG_ADLIB
4191 {
4192 "adlib",
4193 #ifdef HAS_YMF262
4194 "Yamaha YMF262 (OPL3)",
4195 #else
4196 "Yamaha YM3812 (OPL2)",
4197 #endif
4198 0,
4199 1,
4200 { .init_isa = Adlib_init }
4201 },
4202 #endif
4203
4204 #ifdef CONFIG_GUS
4205 {
4206 "gus",
4207 "Gravis Ultrasound GF1",
4208 0,
4209 1,
4210 { .init_isa = GUS_init }
4211 },
4212 #endif
4213
4214 #ifdef CONFIG_AC97
4215 {
4216 "ac97",
4217 "Intel 82801AA AC97 Audio",
4218 0,
4219 0,
4220 { .init_pci = ac97_init }
4221 },
4222 #endif
4223
4224 #ifdef CONFIG_ES1370
4225 {
4226 "es1370",
4227 "ENSONIQ AudioPCI ES1370",
4228 0,
4229 0,
4230 { .init_pci = es1370_init }
4231 },
4232 #endif
4233
4234 #endif /* HAS_AUDIO_CHOICE */
4235
4236 { NULL, NULL, 0, 0, { NULL } }
4237 };
4238
4239 static void select_soundhw (const char *optarg)
4240 {
4241 struct soundhw *c;
4242
4243 if (*optarg == '?') {
4244 show_valid_cards:
4245
4246 printf ("Valid sound card names (comma separated):\n");
4247 for (c = soundhw; c->name; ++c) {
4248 printf ("%-11s %s\n", c->name, c->descr);
4249 }
4250 printf ("\n-soundhw all will enable all of the above\n");
4251 exit (*optarg != '?');
4252 }
4253 else {
4254 size_t l;
4255 const char *p;
4256 char *e;
4257 int bad_card = 0;
4258
4259 if (!strcmp (optarg, "all")) {
4260 for (c = soundhw; c->name; ++c) {
4261 c->enabled = 1;
4262 }
4263 return;
4264 }
4265
4266 p = optarg;
4267 while (*p) {
4268 e = strchr (p, ',');
4269 l = !e ? strlen (p) : (size_t) (e - p);
4270
4271 for (c = soundhw; c->name; ++c) {
4272 if (!strncmp (c->name, p, l) && !c->name[l]) {
4273 c->enabled = 1;
4274 break;
4275 }
4276 }
4277
4278 if (!c->name) {
4279 if (l > 80) {
4280 fprintf (stderr,
4281 "Unknown sound card name (too big to show)\n");
4282 }
4283 else {
4284 fprintf (stderr, "Unknown sound card name `%.*s'\n",
4285 (int) l, p);
4286 }
4287 bad_card = 1;
4288 }
4289 p += l + (e != NULL);
4290 }
4291
4292 if (bad_card)
4293 goto show_valid_cards;
4294 }
4295 }
4296 #endif
4297
4298 static void select_vgahw (const char *p)
4299 {
4300 const char *opts;
4301
4302 vga_interface_type = VGA_NONE;
4303 if (strstart(p, "std", &opts)) {
4304 vga_interface_type = VGA_STD;
4305 } else if (strstart(p, "cirrus", &opts)) {
4306 vga_interface_type = VGA_CIRRUS;
4307 } else if (strstart(p, "vmware", &opts)) {
4308 vga_interface_type = VGA_VMWARE;
4309 } else if (strstart(p, "xenfb", &opts)) {
4310 vga_interface_type = VGA_XENFB;
4311 } else if (!strstart(p, "none", &opts)) {
4312 invalid_vga:
4313 fprintf(stderr, "Unknown vga type: %s\n", p);
4314 exit(1);
4315 }
4316 while (*opts) {
4317 const char *nextopt;
4318
4319 if (strstart(opts, ",retrace=", &nextopt)) {
4320 opts = nextopt;
4321 if (strstart(opts, "dumb", &nextopt))
4322 vga_retrace_method = VGA_RETRACE_DUMB;
4323 else if (strstart(opts, "precise", &nextopt))
4324 vga_retrace_method = VGA_RETRACE_PRECISE;
4325 else goto invalid_vga;
4326 } else goto invalid_vga;
4327 opts = nextopt;
4328 }
4329 }
4330
4331 #ifdef TARGET_I386
4332 static int balloon_parse(const char *arg)
4333 {
4334 QemuOpts *opts;
4335
4336 if (strcmp(arg, "none") == 0) {
4337 return 0;
4338 }
4339
4340 if (!strncmp(arg, "virtio", 6)) {
4341 if (arg[6] == ',') {
4342 /* have params -> parse them */
4343 opts = qemu_opts_parse(&qemu_device_opts, arg+7, NULL);
4344 if (!opts)
4345 return -1;
4346 } else {
4347 /* create empty opts */
4348 opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
4349 }
4350 qemu_opt_set(opts, "driver", "virtio-balloon-pci");
4351 return 0;
4352 }
4353
4354 return -1;
4355 }
4356 #endif
4357
4358 #ifdef _WIN32
4359 static BOOL WINAPI qemu_ctrl_handler(DWORD type)
4360 {
4361 exit(STATUS_CONTROL_C_EXIT);
4362 return TRUE;
4363 }
4364 #endif
4365
4366 int qemu_uuid_parse(const char *str, uint8_t *uuid)
4367 {
4368 int ret;
4369
4370 if(strlen(str) != 36)
4371 return -1;
4372
4373 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
4374 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
4375 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], &uuid[15]);
4376
4377 if(ret != 16)
4378 return -1;
4379
4380 #ifdef TARGET_I386
4381 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
4382 #endif
4383
4384 return 0;
4385 }
4386
4387 #ifndef _WIN32
4388
4389 static void termsig_handler(int signal)
4390 {
4391 qemu_system_shutdown_request();
4392 }
4393
4394 static void sigchld_handler(int signal)
4395 {
4396 waitpid(-1, NULL, WNOHANG);
4397 }
4398
4399 static void sighandler_setup(void)
4400 {
4401 struct sigaction act;
4402
4403 memset(&act, 0, sizeof(act));
4404 act.sa_handler = termsig_handler;
4405 sigaction(SIGINT, &act, NULL);
4406 sigaction(SIGHUP, &act, NULL);
4407 sigaction(SIGTERM, &act, NULL);
4408
4409 act.sa_handler = sigchld_handler;
4410 act.sa_flags = SA_NOCLDSTOP;
4411 sigaction(SIGCHLD, &act, NULL);
4412 }
4413
4414 #endif
4415
4416 #ifdef _WIN32
4417 /* Look for support files in the same directory as the executable. */
4418 static char *find_datadir(const char *argv0)
4419 {
4420 char *p;
4421 char buf[MAX_PATH];
4422 DWORD len;
4423
4424 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
4425 if (len == 0) {
4426 return NULL;
4427 }
4428
4429 buf[len] = 0;
4430 p = buf + len - 1;
4431 while (p != buf && *p != '\\')
4432 p--;
4433 *p = 0;
4434 if (access(buf, R_OK) == 0) {
4435 return qemu_strdup(buf);
4436 }
4437 return NULL;
4438 }
4439 #else /* !_WIN32 */
4440
4441 /* Find a likely location for support files using the location of the binary.
4442 For installed binaries this will be "$bindir/../share/qemu". When
4443 running from the build tree this will be "$bindir/../pc-bios". */
4444 #define SHARE_SUFFIX "/share/qemu"
4445 #define BUILD_SUFFIX "/pc-bios"
4446 static char *find_datadir(const char *argv0)
4447 {
4448 char *dir;
4449 char *p = NULL;
4450 char *res;
4451 char buf[PATH_MAX];
4452 size_t max_len;
4453
4454 #if defined(__linux__)
4455 {
4456 int len;
4457 len = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
4458 if (len > 0) {
4459 buf[len] = 0;
4460 p = buf;
4461 }
4462 }
4463 #elif defined(__FreeBSD__)
4464 {
4465 int len;
4466 len = readlink("/proc/curproc/file", buf, sizeof(buf) - 1);
4467 if (len > 0) {
4468 buf[len] = 0;
4469 p = buf;
4470 }
4471 }
4472 #endif
4473 /* If we don't have any way of figuring out the actual executable
4474 location then try argv[0]. */
4475 if (!p) {
4476 p = realpath(argv0, buf);
4477 if (!p) {
4478 return NULL;
4479 }
4480 }
4481 dir = dirname(p);
4482 dir = dirname(dir);
4483
4484 max_len = strlen(dir) +
4485 MAX(strlen(SHARE_SUFFIX), strlen(BUILD_SUFFIX)) + 1;
4486 res = qemu_mallocz(max_len);
4487 snprintf(res, max_len, "%s%s", dir, SHARE_SUFFIX);
4488 if (access(res, R_OK)) {
4489 snprintf(res, max_len, "%s%s", dir, BUILD_SUFFIX);
4490 if (access(res, R_OK)) {
4491 qemu_free(res);
4492 res = NULL;
4493 }
4494 }
4495
4496 return res;
4497 }
4498 #undef SHARE_SUFFIX
4499 #undef BUILD_SUFFIX
4500 #endif
4501
4502 char *qemu_find_file(int type, const char *name)
4503 {
4504 int len;
4505 const char *subdir;
4506 char *buf;
4507
4508 /* If name contains path separators then try it as a straight path. */
4509 if ((strchr(name, '/') || strchr(name, '\\'))
4510 && access(name, R_OK) == 0) {
4511 return qemu_strdup(name);
4512 }
4513 switch (type) {
4514 case QEMU_FILE_TYPE_BIOS:
4515 subdir = "";
4516 break;
4517 case QEMU_FILE_TYPE_KEYMAP:
4518 subdir = "keymaps/";
4519 break;
4520 default:
4521 abort();
4522 }
4523 len = strlen(data_dir) + strlen(name) + strlen(subdir) + 2;
4524 buf = qemu_mallocz(len);
4525 snprintf(buf, len, "%s/%s%s", data_dir, subdir, name);
4526 if (access(buf, R_OK)) {
4527 qemu_free(buf);
4528 return NULL;
4529 }
4530 return buf;
4531 }
4532
4533 static int device_init_func(QemuOpts *opts, void *opaque)
4534 {
4535 DeviceState *dev;
4536
4537 dev = qdev_device_add(opts);
4538 if (!dev)
4539 return -1;
4540 return 0;
4541 }
4542
4543 struct device_config {
4544 enum {
4545 DEV_USB, /* -usbdevice */
4546 DEV_BT, /* -bt */
4547 } type;
4548 const char *cmdline;
4549 QTAILQ_ENTRY(device_config) next;
4550 };
4551 QTAILQ_HEAD(, device_config) device_configs = QTAILQ_HEAD_INITIALIZER(device_configs);
4552
4553 static void add_device_config(int type, const char *cmdline)
4554 {
4555 struct device_config *conf;
4556
4557 conf = qemu_mallocz(sizeof(*conf));
4558 conf->type = type;
4559 conf->cmdline = cmdline;
4560 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
4561 }
4562
4563 static int foreach_device_config(int type, int (*func)(const char *cmdline))
4564 {
4565 struct device_config *conf;
4566 int rc;
4567
4568 QTAILQ_FOREACH(conf, &device_configs, next) {
4569 if (conf->type != type)
4570 continue;
4571 rc = func(conf->cmdline);
4572 if (0 != rc)
4573 return rc;
4574 }
4575 return 0;
4576 }
4577
4578 int main(int argc, char **argv, char **envp)
4579 {
4580 const char *gdbstub_dev = NULL;
4581 uint32_t boot_devices_bitmap = 0;
4582 int i;
4583 int snapshot, linux_boot, net_boot;
4584 const char *initrd_filename;
4585 const char *kernel_filename, *kernel_cmdline;
4586 char boot_devices[33] = "cad"; /* default to HD->floppy->CD-ROM */
4587 DisplayState *ds;
4588 DisplayChangeListener *dcl;
4589 int cyls, heads, secs, translation;
4590 QemuOpts *hda_opts = NULL, *opts;
4591 int optind;
4592 const char *r, *optarg;
4593 CharDriverState *monitor_hds[MAX_MONITOR_DEVICES];
4594 const char *monitor_devices[MAX_MONITOR_DEVICES];
4595 int monitor_device_index;
4596 const char *serial_devices[MAX_SERIAL_PORTS];
4597 int serial_device_index;
4598 const char *parallel_devices[MAX_PARALLEL_PORTS];
4599 int parallel_device_index;
4600 const char *virtio_consoles[MAX_VIRTIO_CONSOLES];
4601 int virtio_console_index;
4602 const char *loadvm = NULL;
4603 QEMUMachine *machine;
4604 const char *cpu_model;
4605 #ifndef _WIN32
4606 int fds[2];
4607 #endif
4608 int tb_size;
4609 const char *pid_file = NULL;
4610 const char *incoming = NULL;
4611 #ifndef _WIN32
4612 int fd = 0;
4613 struct passwd *pwd = NULL;
4614 const char *chroot_dir = NULL;
4615 const char *run_as = NULL;
4616 #endif
4617 CPUState *env;
4618 int show_vnc_port = 0;
4619
4620 init_clocks();
4621
4622 qemu_errors_to_file(stderr);
4623 qemu_cache_utils_init(envp);
4624
4625 QLIST_INIT (&vm_change_state_head);
4626 #ifndef _WIN32
4627 {
4628 struct sigaction act;
4629 sigfillset(&act.sa_mask);
4630 act.sa_flags = 0;
4631 act.sa_handler = SIG_IGN;
4632 sigaction(SIGPIPE, &act, NULL);
4633 }
4634 #else
4635 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
4636 /* Note: cpu_interrupt() is currently not SMP safe, so we force
4637 QEMU to run on a single CPU */
4638 {
4639 HANDLE h;
4640 DWORD mask, smask;
4641 int i;
4642 h = GetCurrentProcess();
4643 if (GetProcessAffinityMask(h, &mask, &smask)) {
4644 for(i = 0; i < 32; i++) {
4645 if (mask & (1 << i))
4646 break;
4647 }
4648 if (i != 32) {
4649 mask = 1 << i;
4650 SetProcessAffinityMask(h, mask);
4651 }
4652 }
4653 }
4654 #endif
4655
4656 module_call_init(MODULE_INIT_MACHINE);
4657 machine = find_default_machine();
4658 cpu_model = NULL;
4659 initrd_filename = NULL;
4660 ram_size = 0;
4661 snapshot = 0;
4662 kernel_filename = NULL;
4663 kernel_cmdline = "";
4664 cyls = heads = secs = 0;
4665 translation = BIOS_ATA_TRANSLATION_AUTO;
4666
4667 serial_devices[0] = "vc:80Cx24C";
4668 for(i = 1; i < MAX_SERIAL_PORTS; i++)
4669 serial_devices[i] = NULL;
4670 serial_device_index = 0;
4671
4672 parallel_devices[0] = "vc:80Cx24C";
4673 for(i = 1; i < MAX_PARALLEL_PORTS; i++)
4674 parallel_devices[i] = NULL;
4675 parallel_device_index = 0;
4676
4677 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++)
4678 virtio_consoles[i] = NULL;
4679 virtio_console_index = 0;
4680
4681 monitor_devices[0] = "vc:80Cx24C";
4682 for (i = 1; i < MAX_MONITOR_DEVICES; i++) {
4683 monitor_devices[i] = NULL;
4684 }
4685 monitor_device_index = 0;
4686
4687 for (i = 0; i < MAX_NODES; i++) {
4688 node_mem[i] = 0;
4689 node_cpumask[i] = 0;
4690 }
4691
4692 nb_numa_nodes = 0;
4693 nb_nics = 0;
4694
4695 tb_size = 0;
4696 autostart= 1;
4697
4698 optind = 1;
4699 for(;;) {
4700 if (optind >= argc)
4701 break;
4702 r = argv[optind];
4703 if (r[0] != '-') {
4704 hda_opts = drive_add(argv[optind++], HD_ALIAS, 0);
4705 } else {
4706 const QEMUOption *popt;
4707
4708 optind++;
4709 /* Treat --foo the same as -foo. */
4710 if (r[1] == '-')
4711 r++;
4712 popt = qemu_options;
4713 for(;;) {
4714 if (!popt->name) {
4715 fprintf(stderr, "%s: invalid option -- '%s'\n",
4716 argv[0], r);
4717 exit(1);
4718 }
4719 if (!strcmp(popt->name, r + 1))
4720 break;
4721 popt++;
4722 }
4723 if (popt->flags & HAS_ARG) {
4724 if (optind >= argc) {
4725 fprintf(stderr, "%s: option '%s' requires an argument\n",
4726 argv[0], r);
4727 exit(1);
4728 }
4729 optarg = argv[optind++];
4730 } else {
4731 optarg = NULL;
4732 }
4733
4734 switch(popt->index) {
4735 case QEMU_OPTION_M:
4736 machine = find_machine(optarg);
4737 if (!machine) {
4738 QEMUMachine *m;
4739 printf("Supported machines are:\n");
4740 for(m = first_machine; m != NULL; m = m->next) {
4741 if (m->alias)
4742 printf("%-10s %s (alias of %s)\n",
4743 m->alias, m->desc, m->name);
4744 printf("%-10s %s%s\n",
4745 m->name, m->desc,
4746 m->is_default ? " (default)" : "");
4747 }
4748 exit(*optarg != '?');
4749 }
4750 break;
4751 case QEMU_OPTION_cpu:
4752 /* hw initialization will check this */
4753 if (*optarg == '?') {
4754 /* XXX: implement xxx_cpu_list for targets that still miss it */
4755 #if defined(cpu_list)
4756 cpu_list(stdout, &fprintf);
4757 #endif
4758 exit(0);
4759 } else {
4760 cpu_model = optarg;
4761 }
4762 break;
4763 case QEMU_OPTION_initrd:
4764 initrd_filename = optarg;
4765 break;
4766 case QEMU_OPTION_hda:
4767 if (cyls == 0)
4768 hda_opts = drive_add(optarg, HD_ALIAS, 0);
4769 else
4770 hda_opts = drive_add(optarg, HD_ALIAS
4771 ",cyls=%d,heads=%d,secs=%d%s",
4772 0, cyls, heads, secs,
4773 translation == BIOS_ATA_TRANSLATION_LBA ?
4774 ",trans=lba" :
4775 translation == BIOS_ATA_TRANSLATION_NONE ?
4776 ",trans=none" : "");
4777 break;
4778 case QEMU_OPTION_hdb:
4779 case QEMU_OPTION_hdc:
4780 case QEMU_OPTION_hdd:
4781 drive_add(optarg, HD_ALIAS, popt->index - QEMU_OPTION_hda);
4782 break;
4783 case QEMU_OPTION_drive:
4784 drive_add(NULL, "%s", optarg);
4785 break;
4786 case QEMU_OPTION_set:
4787 if (qemu_set_option(optarg) != 0)
4788 exit(1);
4789 break;
4790 case QEMU_OPTION_mtdblock:
4791 drive_add(optarg, MTD_ALIAS);
4792 break;
4793 case QEMU_OPTION_sd:
4794 drive_add(optarg, SD_ALIAS);
4795 break;
4796 case QEMU_OPTION_pflash:
4797 drive_add(optarg, PFLASH_ALIAS);
4798 break;
4799 case QEMU_OPTION_snapshot:
4800 snapshot = 1;
4801 break;
4802 case QEMU_OPTION_hdachs:
4803 {
4804 const char *p;
4805 p = optarg;
4806 cyls = strtol(p, (char **)&p, 0);
4807 if (cyls < 1 || cyls > 16383)
4808 goto chs_fail;
4809 if (*p != ',')
4810 goto chs_fail;
4811 p++;
4812 heads = strtol(p, (char **)&p, 0);
4813 if (heads < 1 || heads > 16)
4814 goto chs_fail;
4815 if (*p != ',')
4816 goto chs_fail;
4817 p++;
4818 secs = strtol(p, (char **)&p, 0);
4819 if (secs < 1 || secs > 63)
4820 goto chs_fail;
4821 if (*p == ',') {
4822 p++;
4823 if (!strcmp(p, "none"))
4824 translation = BIOS_ATA_TRANSLATION_NONE;
4825 else if (!strcmp(p, "lba"))
4826 translation = BIOS_ATA_TRANSLATION_LBA;
4827 else if (!strcmp(p, "auto"))
4828 translation = BIOS_ATA_TRANSLATION_AUTO;
4829 else
4830 goto chs_fail;
4831 } else if (*p != '\0') {
4832 chs_fail:
4833 fprintf(stderr, "qemu: invalid physical CHS format\n");
4834 exit(1);
4835 }
4836 if (hda_opts != NULL) {
4837 char num[16];
4838 snprintf(num, sizeof(num), "%d", cyls);
4839 qemu_opt_set(hda_opts, "cyls", num);
4840 snprintf(num, sizeof(num), "%d", heads);
4841 qemu_opt_set(hda_opts, "heads", num);
4842 snprintf(num, sizeof(num), "%d", secs);
4843 qemu_opt_set(hda_opts, "secs", num);
4844 if (translation == BIOS_ATA_TRANSLATION_LBA)
4845 qemu_opt_set(hda_opts, "trans", "lba");
4846 if (translation == BIOS_ATA_TRANSLATION_NONE)
4847 qemu_opt_set(hda_opts, "trans", "none");
4848 }
4849 }
4850 break;
4851 case QEMU_OPTION_numa:
4852 if (nb_numa_nodes >= MAX_NODES) {
4853 fprintf(stderr, "qemu: too many NUMA nodes\n");
4854 exit(1);
4855 }
4856 numa_add(optarg);
4857 break;
4858 case QEMU_OPTION_nographic:
4859 display_type = DT_NOGRAPHIC;
4860 break;
4861 #ifdef CONFIG_CURSES
4862 case QEMU_OPTION_curses:
4863 display_type = DT_CURSES;
4864 break;
4865 #endif
4866 case QEMU_OPTION_portrait:
4867 graphic_rotate = 1;
4868 break;
4869 case QEMU_OPTION_kernel:
4870 kernel_filename = optarg;
4871 break;
4872 case QEMU_OPTION_append:
4873 kernel_cmdline = optarg;
4874 break;
4875 case QEMU_OPTION_cdrom:
4876 drive_add(optarg, CDROM_ALIAS);
4877 break;
4878 case QEMU_OPTION_boot:
4879 {
4880 static const char * const params[] = {
4881 "order", "once", "menu", NULL
4882 };
4883 char buf[sizeof(boot_devices)];
4884 char *standard_boot_devices;
4885 int legacy = 0;
4886
4887 if (!strchr(optarg, '=')) {
4888 legacy = 1;
4889 pstrcpy(buf, sizeof(buf), optarg);
4890 } else if (check_params(buf, sizeof(buf), params, optarg) < 0) {
4891 fprintf(stderr,
4892 "qemu: unknown boot parameter '%s' in '%s'\n",
4893 buf, optarg);
4894 exit(1);
4895 }
4896
4897 if (legacy ||
4898 get_param_value(buf, sizeof(buf), "order", optarg)) {
4899 boot_devices_bitmap = parse_bootdevices(buf);
4900 pstrcpy(boot_devices, sizeof(boot_devices), buf);
4901 }
4902 if (!legacy) {
4903 if (get_param_value(buf, sizeof(buf),
4904 "once", optarg)) {
4905 boot_devices_bitmap |= parse_bootdevices(buf);
4906 standard_boot_devices = qemu_strdup(boot_devices);
4907 pstrcpy(boot_devices, sizeof(boot_devices), buf);
4908 qemu_register_reset(restore_boot_devices,
4909 standard_boot_devices);
4910 }
4911 if (get_param_value(buf, sizeof(buf),
4912 "menu", optarg)) {
4913 if (!strcmp(buf, "on")) {
4914 boot_menu = 1;
4915 } else if (!strcmp(buf, "off")) {
4916 boot_menu = 0;
4917 } else {
4918 fprintf(stderr,
4919 "qemu: invalid option value '%s'\n",
4920 buf);
4921 exit(1);
4922 }
4923 }
4924 }
4925 }
4926 break;
4927 case QEMU_OPTION_fda:
4928 case QEMU_OPTION_fdb:
4929 drive_add(optarg, FD_ALIAS, popt->index - QEMU_OPTION_fda);
4930 break;
4931 #ifdef TARGET_I386
4932 case QEMU_OPTION_no_fd_bootchk:
4933 fd_bootchk = 0;
4934 break;
4935 #endif
4936 case QEMU_OPTION_netdev:
4937 if (net_client_parse(&qemu_netdev_opts, optarg) == -1) {
4938 exit(1);
4939 }
4940 break;
4941 case QEMU_OPTION_net:
4942 if (net_client_parse(&qemu_net_opts, optarg) == -1) {
4943 exit(1);
4944 }
4945 break;
4946 #ifdef CONFIG_SLIRP
4947 case QEMU_OPTION_tftp:
4948 legacy_tftp_prefix = optarg;
4949 break;
4950 case QEMU_OPTION_bootp:
4951 legacy_bootp_filename = optarg;
4952 break;
4953 #ifndef _WIN32
4954 case QEMU_OPTION_smb:
4955 if (net_slirp_smb(optarg) < 0)
4956 exit(1);
4957 break;
4958 #endif
4959 case QEMU_OPTION_redir:
4960 if (net_slirp_redir(optarg) < 0)
4961 exit(1);
4962 break;
4963 #endif
4964 case QEMU_OPTION_bt:
4965 add_device_config(DEV_BT, optarg);
4966 break;
4967 #ifdef HAS_AUDIO
4968 case QEMU_OPTION_audio_help:
4969 AUD_help ();
4970 exit (0);
4971 break;
4972 case QEMU_OPTION_soundhw:
4973 select_soundhw (optarg);
4974 break;
4975 #endif
4976 case QEMU_OPTION_h:
4977 help(0);
4978 break;
4979 case QEMU_OPTION_version:
4980 version();
4981 exit(0);
4982 break;
4983 case QEMU_OPTION_m: {
4984 uint64_t value;
4985 char *ptr;
4986
4987 value = strtoul(optarg, &ptr, 10);
4988 switch (*ptr) {
4989 case 0: case 'M': case 'm':
4990 value <<= 20;
4991 break;
4992 case 'G': case 'g':
4993 value <<= 30;
4994 break;
4995 default:
4996 fprintf(stderr, "qemu: invalid ram size: %s\n", optarg);
4997 exit(1);
4998 }
4999
5000 /* On 32-bit hosts, QEMU is limited by virtual address space */
5001 if (value > (2047 << 20) && HOST_LONG_BITS == 32) {
5002 fprintf(stderr, "qemu: at most 2047 MB RAM can be simulated\n");
5003 exit(1);
5004 }
5005 if (value != (uint64_t)(ram_addr_t)value) {
5006 fprintf(stderr, "qemu: ram size too large\n");
5007 exit(1);
5008 }
5009 ram_size = value;
5010 break;
5011 }
5012 case QEMU_OPTION_d:
5013 {
5014 int mask;
5015 const CPULogItem *item;
5016
5017 mask = cpu_str_to_log_mask(optarg);
5018 if (!mask) {
5019 printf("Log items (comma separated):\n");
5020 for(item = cpu_log_items; item->mask != 0; item++) {
5021 printf("%-10s %s\n", item->name, item->help);
5022 }
5023 exit(1);
5024 }
5025 cpu_set_log(mask);
5026 }
5027 break;
5028 case QEMU_OPTION_s:
5029 gdbstub_dev = "tcp::" DEFAULT_GDBSTUB_PORT;
5030 break;
5031 case QEMU_OPTION_gdb:
5032 gdbstub_dev = optarg;
5033 break;
5034 case QEMU_OPTION_L:
5035 data_dir = optarg;
5036 break;
5037 case QEMU_OPTION_bios:
5038 bios_name = optarg;
5039 break;
5040 case QEMU_OPTION_singlestep:
5041 singlestep = 1;
5042 break;
5043 case QEMU_OPTION_S:
5044 autostart = 0;
5045 break;
5046 #ifndef _WIN32
5047 case QEMU_OPTION_k:
5048 keyboard_layout = optarg;
5049 break;
5050 #endif
5051 case QEMU_OPTION_localtime:
5052 rtc_utc = 0;
5053 break;
5054 case QEMU_OPTION_vga:
5055 select_vgahw (optarg);
5056 break;
5057 #if defined(TARGET_PPC) || defined(TARGET_SPARC)
5058 case QEMU_OPTION_g:
5059 {
5060 const char *p;
5061 int w, h, depth;
5062 p = optarg;
5063 w = strtol(p, (char **)&p, 10);
5064 if (w <= 0) {
5065 graphic_error:
5066 fprintf(stderr, "qemu: invalid resolution or depth\n");
5067 exit(1);
5068 }
5069 if (*p != 'x')
5070 goto graphic_error;
5071 p++;
5072 h = strtol(p, (char **)&p, 10);
5073 if (h <= 0)
5074 goto graphic_error;
5075 if (*p == 'x') {
5076 p++;
5077 depth = strtol(p, (char **)&p, 10);
5078 if (depth != 8 && depth != 15 && depth != 16 &&
5079 depth != 24 && depth != 32)
5080 goto graphic_error;
5081 } else if (*p == '\0') {
5082 depth = graphic_depth;
5083 } else {
5084 goto graphic_error;
5085 }
5086
5087 graphic_width = w;
5088 graphic_height = h;
5089 graphic_depth = depth;
5090 }
5091 break;
5092 #endif
5093 case QEMU_OPTION_echr:
5094 {
5095 char *r;
5096 term_escape_char = strtol(optarg, &r, 0);
5097 if (r == optarg)
5098 printf("Bad argument to echr\n");
5099 break;
5100 }
5101 case QEMU_OPTION_monitor:
5102 if (monitor_device_index >= MAX_MONITOR_DEVICES) {
5103 fprintf(stderr, "qemu: too many monitor devices\n");
5104 exit(1);
5105 }
5106 monitor_devices[monitor_device_index] = optarg;
5107 monitor_device_index++;
5108 break;
5109 case QEMU_OPTION_chardev:
5110 opts = qemu_opts_parse(&qemu_chardev_opts, optarg, "backend");
5111 if (!opts) {
5112 fprintf(stderr, "parse error: %s\n", optarg);
5113 exit(1);
5114 }
5115 if (qemu_chr_open_opts(opts, NULL) == NULL) {
5116 exit(1);
5117 }
5118 break;
5119 case QEMU_OPTION_serial:
5120 if (serial_device_index >= MAX_SERIAL_PORTS) {
5121 fprintf(stderr, "qemu: too many serial ports\n");
5122 exit(1);
5123 }
5124 serial_devices[serial_device_index] = optarg;
5125 serial_device_index++;
5126 break;
5127 case QEMU_OPTION_watchdog:
5128 if (watchdog) {
5129 fprintf(stderr,
5130 "qemu: only one watchdog option may be given\n");
5131 return 1;
5132 }
5133 watchdog = optarg;
5134 break;
5135 case QEMU_OPTION_watchdog_action:
5136 if (select_watchdog_action(optarg) == -1) {
5137 fprintf(stderr, "Unknown -watchdog-action parameter\n");
5138 exit(1);
5139 }
5140 break;
5141 case QEMU_OPTION_virtiocon:
5142 if (virtio_console_index >= MAX_VIRTIO_CONSOLES) {
5143 fprintf(stderr, "qemu: too many virtio consoles\n");
5144 exit(1);
5145 }
5146 virtio_consoles[virtio_console_index] = optarg;
5147 virtio_console_index++;
5148 break;
5149 case QEMU_OPTION_parallel:
5150 if (parallel_device_index >= MAX_PARALLEL_PORTS) {
5151 fprintf(stderr, "qemu: too many parallel ports\n");
5152 exit(1);
5153 }
5154 parallel_devices[parallel_device_index] = optarg;
5155 parallel_device_index++;
5156 break;
5157 case QEMU_OPTION_loadvm:
5158 loadvm = optarg;
5159 break;
5160 case QEMU_OPTION_full_screen:
5161 full_screen = 1;
5162 break;
5163 #ifdef CONFIG_SDL
5164 case QEMU_OPTION_no_frame:
5165 no_frame = 1;
5166 break;
5167 case QEMU_OPTION_alt_grab:
5168 alt_grab = 1;
5169 break;
5170 case QEMU_OPTION_ctrl_grab:
5171 ctrl_grab = 1;
5172 break;
5173 case QEMU_OPTION_no_quit:
5174 no_quit = 1;
5175 break;
5176 case QEMU_OPTION_sdl:
5177 display_type = DT_SDL;
5178 break;
5179 #endif
5180 case QEMU_OPTION_pidfile:
5181 pid_file = optarg;
5182 break;
5183 #ifdef TARGET_I386
5184 case QEMU_OPTION_win2k_hack:
5185 win2k_install_hack = 1;
5186 break;
5187 case QEMU_OPTION_rtc_td_hack:
5188 rtc_td_hack = 1;
5189 break;
5190 case QEMU_OPTION_acpitable:
5191 if(acpi_table_add(optarg) < 0) {
5192 fprintf(stderr, "Wrong acpi table provided\n");
5193 exit(1);
5194 }
5195 break;
5196 case QEMU_OPTION_smbios:
5197 if(smbios_entry_add(optarg) < 0) {
5198 fprintf(stderr, "Wrong smbios provided\n");
5199 exit(1);
5200 }
5201 break;
5202 #endif
5203 #ifdef CONFIG_KVM
5204 case QEMU_OPTION_enable_kvm:
5205 kvm_allowed = 1;
5206 break;
5207 #endif
5208 case QEMU_OPTION_usb:
5209 usb_enabled = 1;
5210 break;
5211 case QEMU_OPTION_usbdevice:
5212 usb_enabled = 1;
5213 add_device_config(DEV_USB, optarg);
5214 break;
5215 case QEMU_OPTION_device:
5216 if (!qemu_opts_parse(&qemu_device_opts, optarg, "driver")) {
5217 exit(1);
5218 }
5219 break;
5220 case QEMU_OPTION_smp:
5221 smp_parse(optarg);
5222 if (smp_cpus < 1) {
5223 fprintf(stderr, "Invalid number of CPUs\n");
5224 exit(1);
5225 }
5226 if (max_cpus < smp_cpus) {
5227 fprintf(stderr, "maxcpus must be equal to or greater than "
5228 "smp\n");
5229 exit(1);
5230 }
5231 if (max_cpus > 255) {
5232 fprintf(stderr, "Unsupported number of maxcpus\n");
5233 exit(1);
5234 }
5235 break;
5236 case QEMU_OPTION_vnc:
5237 display_type = DT_VNC;
5238 vnc_display = optarg;
5239 break;
5240 #ifdef TARGET_I386
5241 case QEMU_OPTION_no_acpi:
5242 acpi_enabled = 0;
5243 break;
5244 case QEMU_OPTION_no_hpet:
5245 no_hpet = 1;
5246 break;
5247 case QEMU_OPTION_balloon:
5248 if (balloon_parse(optarg) < 0) {
5249 fprintf(stderr, "Unknown -balloon argument %s\n", optarg);
5250 exit(1);
5251 }
5252 break;
5253 #endif
5254 case QEMU_OPTION_no_reboot:
5255 no_reboot = 1;
5256 break;
5257 case QEMU_OPTION_no_shutdown:
5258 no_shutdown = 1;
5259 break;
5260 case QEMU_OPTION_show_cursor:
5261 cursor_hide = 0;
5262 break;
5263 case QEMU_OPTION_uuid:
5264 if(qemu_uuid_parse(optarg, qemu_uuid) < 0) {
5265 fprintf(stderr, "Fail to parse UUID string."
5266 " Wrong format.\n");
5267 exit(1);
5268 }
5269 break;
5270 #ifndef _WIN32
5271 case QEMU_OPTION_daemonize:
5272 daemonize = 1;
5273 break;
5274 #endif
5275 case QEMU_OPTION_option_rom:
5276 if (nb_option_roms >= MAX_OPTION_ROMS) {
5277 fprintf(stderr, "Too many option ROMs\n");
5278 exit(1);
5279 }
5280 option_rom[nb_option_roms] = optarg;
5281 nb_option_roms++;
5282 break;
5283 #if defined(TARGET_ARM) || defined(TARGET_M68K)
5284 case QEMU_OPTION_semihosting:
5285 semihosting_enabled = 1;
5286 break;
5287 #endif
5288 case QEMU_OPTION_name:
5289 qemu_name = qemu_strdup(optarg);
5290 {
5291 char *p = strchr(qemu_name, ',');
5292 if (p != NULL) {
5293 *p++ = 0;
5294 if (strncmp(p, "process=", 8)) {
5295 fprintf(stderr, "Unknown subargument %s to -name", p);
5296 exit(1);
5297 }
5298 p += 8;
5299 set_proc_name(p);
5300 }
5301 }
5302 break;
5303 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
5304 case QEMU_OPTION_prom_env:
5305 if (nb_prom_envs >= MAX_PROM_ENVS) {
5306 fprintf(stderr, "Too many prom variables\n");
5307 exit(1);
5308 }
5309 prom_envs[nb_prom_envs] = optarg;
5310 nb_prom_envs++;
5311 break;
5312 #endif
5313 #ifdef TARGET_ARM
5314 case QEMU_OPTION_old_param:
5315 old_param = 1;
5316 break;
5317 #endif
5318 case QEMU_OPTION_clock:
5319 configure_alarms(optarg);
5320 break;
5321 case QEMU_OPTION_startdate:
5322 configure_rtc_date_offset(optarg, 1);
5323 break;
5324 case QEMU_OPTION_rtc:
5325 opts = qemu_opts_parse(&qemu_rtc_opts, optarg, NULL);
5326 if (!opts) {
5327 fprintf(stderr, "parse error: %s\n", optarg);
5328 exit(1);
5329 }
5330 configure_rtc(opts);
5331 break;
5332 case QEMU_OPTION_tb_size:
5333 tb_size = strtol(optarg, NULL, 0);
5334 if (tb_size < 0)
5335 tb_size = 0;
5336 break;
5337 case QEMU_OPTION_icount:
5338 use_icount = 1;
5339 if (strcmp(optarg, "auto") == 0) {
5340 icount_time_shift = -1;
5341 } else {
5342 icount_time_shift = strtol(optarg, NULL, 0);
5343 }
5344 break;
5345 case QEMU_OPTION_incoming:
5346 incoming = optarg;
5347 break;
5348 #ifndef _WIN32
5349 case QEMU_OPTION_chroot:
5350 chroot_dir = optarg;
5351 break;
5352 case QEMU_OPTION_runas:
5353 run_as = optarg;
5354 break;
5355 #endif
5356 #ifdef CONFIG_XEN
5357 case QEMU_OPTION_xen_domid:
5358 xen_domid = atoi(optarg);
5359 break;
5360 case QEMU_OPTION_xen_create:
5361 xen_mode = XEN_CREATE;
5362 break;
5363 case QEMU_OPTION_xen_attach:
5364 xen_mode = XEN_ATTACH;
5365 break;
5366 #endif
5367 }
5368 }
5369 }
5370
5371 /* If no data_dir is specified then try to find it relative to the
5372 executable path. */
5373 if (!data_dir) {
5374 data_dir = find_datadir(argv[0]);
5375 }
5376 /* If all else fails use the install patch specified when building. */
5377 if (!data_dir) {
5378 data_dir = CONFIG_QEMU_SHAREDIR;
5379 }
5380
5381 /*
5382 * Default to max_cpus = smp_cpus, in case the user doesn't
5383 * specify a max_cpus value.
5384 */
5385 if (!max_cpus)
5386 max_cpus = smp_cpus;
5387
5388 machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */
5389 if (smp_cpus > machine->max_cpus) {
5390 fprintf(stderr, "Number of SMP cpus requested (%d), exceeds max cpus "
5391 "supported by machine `%s' (%d)\n", smp_cpus, machine->name,
5392 machine->max_cpus);
5393 exit(1);
5394 }
5395
5396 if (display_type == DT_NOGRAPHIC) {
5397 if (serial_device_index == 0)
5398 serial_devices[0] = "stdio";
5399 if (parallel_device_index == 0)
5400 parallel_devices[0] = "null";
5401 if (strncmp(monitor_devices[0], "vc", 2) == 0) {
5402 monitor_devices[0] = "stdio";
5403 }
5404 }
5405
5406 #ifndef _WIN32
5407 if (daemonize) {
5408 pid_t pid;
5409
5410 if (pipe(fds) == -1)
5411 exit(1);
5412
5413 pid = fork();
5414 if (pid > 0) {
5415 uint8_t status;
5416 ssize_t len;
5417
5418 close(fds[1]);
5419
5420 again:
5421 len = read(fds[0], &status, 1);
5422 if (len == -1 && (errno == EINTR))
5423 goto again;
5424
5425 if (len != 1)
5426 exit(1);
5427 else if (status == 1) {
5428 fprintf(stderr, "Could not acquire pidfile: %s\n", strerror(errno));
5429 exit(1);
5430 } else
5431 exit(0);
5432 } else if (pid < 0)
5433 exit(1);
5434
5435 setsid();
5436
5437 pid = fork();
5438 if (pid > 0)
5439 exit(0);
5440 else if (pid < 0)
5441 exit(1);
5442
5443 umask(027);
5444
5445 signal(SIGTSTP, SIG_IGN);
5446 signal(SIGTTOU, SIG_IGN);
5447 signal(SIGTTIN, SIG_IGN);
5448 }
5449
5450 if (pid_file && qemu_create_pidfile(pid_file) != 0) {
5451 if (daemonize) {
5452 uint8_t status = 1;
5453 write(fds[1], &status, 1);
5454 } else
5455 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
5456 exit(1);
5457 }
5458 #endif
5459
5460 if (kvm_enabled()) {
5461 int ret;
5462
5463 ret = kvm_init(smp_cpus);
5464 if (ret < 0) {
5465 fprintf(stderr, "failed to initialize KVM\n");
5466 exit(1);
5467 }
5468 }
5469
5470 if (qemu_init_main_loop()) {
5471 fprintf(stderr, "qemu_init_main_loop failed\n");
5472 exit(1);
5473 }
5474 linux_boot = (kernel_filename != NULL);
5475
5476 if (!linux_boot && *kernel_cmdline != '\0') {
5477 fprintf(stderr, "-append only allowed with -kernel option\n");
5478 exit(1);
5479 }
5480
5481 if (!linux_boot && initrd_filename != NULL) {
5482 fprintf(stderr, "-initrd only allowed with -kernel option\n");
5483 exit(1);
5484 }
5485
5486 #ifndef _WIN32
5487 /* Win32 doesn't support line-buffering and requires size >= 2 */
5488 setvbuf(stdout, NULL, _IOLBF, 0);
5489 #endif
5490
5491 if (init_timer_alarm() < 0) {
5492 fprintf(stderr, "could not initialize alarm timer\n");
5493 exit(1);
5494 }
5495 if (use_icount && icount_time_shift < 0) {
5496 use_icount = 2;
5497 /* 125MIPS seems a reasonable initial guess at the guest speed.
5498 It will be corrected fairly quickly anyway. */
5499 icount_time_shift = 3;
5500 init_icount_adjust();
5501 }
5502
5503 #ifdef _WIN32
5504 socket_init();
5505 #endif
5506
5507 if (net_init_clients() < 0) {
5508 exit(1);
5509 }
5510
5511 net_boot = (boot_devices_bitmap >> ('n' - 'a')) & 0xF;
5512 net_set_boot_mask(net_boot);
5513
5514 /* init the bluetooth world */
5515 if (foreach_device_config(DEV_BT, bt_parse))
5516 exit(1);
5517
5518 /* init the memory */
5519 if (ram_size == 0)
5520 ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
5521
5522 /* init the dynamic translator */
5523 cpu_exec_init_all(tb_size * 1024 * 1024);
5524
5525 bdrv_init();
5526
5527 /* we always create the cdrom drive, even if no disk is there */
5528 drive_add(NULL, CDROM_ALIAS);
5529
5530 /* we always create at least one floppy */
5531 drive_add(NULL, FD_ALIAS, 0);
5532
5533 /* we always create one sd slot, even if no card is in it */
5534 drive_add(NULL, SD_ALIAS);
5535
5536 /* open the virtual block devices */
5537 if (snapshot)
5538 qemu_opts_foreach(&qemu_drive_opts, drive_enable_snapshot, NULL, 0);
5539 if (qemu_opts_foreach(&qemu_drive_opts, drive_init_func, machine, 1) != 0)
5540 exit(1);
5541
5542 vmstate_register(0, &vmstate_timers ,&timers_state);
5543 register_savevm_live("ram", 0, 3, ram_save_live, NULL, ram_load, NULL);
5544
5545 /* Maintain compatibility with multiple stdio monitors */
5546 if (!strcmp(monitor_devices[0],"stdio")) {
5547 for (i = 0; i < MAX_SERIAL_PORTS; i++) {
5548 const char *devname = serial_devices[i];
5549 if (devname && !strcmp(devname,"mon:stdio")) {
5550 monitor_devices[0] = NULL;
5551 break;
5552 } else if (devname && !strcmp(devname,"stdio")) {
5553 monitor_devices[0] = NULL;
5554 serial_devices[i] = "mon:stdio";
5555 break;
5556 }
5557 }
5558 }
5559
5560 if (nb_numa_nodes > 0) {
5561 int i;
5562
5563 if (nb_numa_nodes > smp_cpus) {
5564 nb_numa_nodes = smp_cpus;
5565 }
5566
5567 /* If no memory size if given for any node, assume the default case
5568 * and distribute the available memory equally across all nodes
5569 */
5570 for (i = 0; i < nb_numa_nodes; i++) {
5571 if (node_mem[i] != 0)
5572 break;
5573 }
5574 if (i == nb_numa_nodes) {
5575 uint64_t usedmem = 0;
5576
5577 /* On Linux, the each node's border has to be 8MB aligned,
5578 * the final node gets the rest.
5579 */
5580 for (i = 0; i < nb_numa_nodes - 1; i++) {
5581 node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
5582 usedmem += node_mem[i];
5583 }
5584 node_mem[i] = ram_size - usedmem;
5585 }
5586
5587 for (i = 0; i < nb_numa_nodes; i++) {
5588 if (node_cpumask[i] != 0)
5589 break;
5590 }
5591 /* assigning the VCPUs round-robin is easier to implement, guest OSes
5592 * must cope with this anyway, because there are BIOSes out there in
5593 * real machines which also use this scheme.
5594 */
5595 if (i == nb_numa_nodes) {
5596 for (i = 0; i < smp_cpus; i++) {
5597 node_cpumask[i % nb_numa_nodes] |= 1 << i;
5598 }
5599 }
5600 }
5601
5602 for (i = 0; i < MAX_MONITOR_DEVICES; i++) {
5603 const char *devname = monitor_devices[i];
5604 if (devname && strcmp(devname, "none")) {
5605 char label[32];
5606 if (i == 0) {
5607 snprintf(label, sizeof(label), "monitor");
5608 } else {
5609 snprintf(label, sizeof(label), "monitor%d", i);
5610 }
5611 monitor_hds[i] = qemu_chr_open(label, devname, NULL);
5612 if (!monitor_hds[i]) {
5613 fprintf(stderr, "qemu: could not open monitor device '%s'\n",
5614 devname);
5615 exit(1);
5616 }
5617 }
5618 }
5619
5620 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
5621 const char *devname = serial_devices[i];
5622 if (devname && strcmp(devname, "none")) {
5623 char label[32];
5624 snprintf(label, sizeof(label), "serial%d", i);
5625 serial_hds[i] = qemu_chr_open(label, devname, NULL);
5626 if (!serial_hds[i]) {
5627 fprintf(stderr, "qemu: could not open serial device '%s': %s\n",
5628 devname, strerror(errno));
5629 exit(1);
5630 }
5631 }
5632 }
5633
5634 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
5635 const char *devname = parallel_devices[i];
5636 if (devname && strcmp(devname, "none")) {
5637 char label[32];
5638 snprintf(label, sizeof(label), "parallel%d", i);
5639 parallel_hds[i] = qemu_chr_open(label, devname, NULL);
5640 if (!parallel_hds[i]) {
5641 fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
5642 devname, strerror(errno));
5643 exit(1);
5644 }
5645 }
5646 }
5647
5648 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
5649 const char *devname = virtio_consoles[i];
5650 if (devname && strcmp(devname, "none")) {
5651 char label[32];
5652 snprintf(label, sizeof(label), "virtcon%d", i);
5653 virtcon_hds[i] = qemu_chr_open(label, devname, NULL);
5654 if (!virtcon_hds[i]) {
5655 fprintf(stderr, "qemu: could not open virtio console '%s': %s\n",
5656 devname, strerror(errno));
5657 exit(1);
5658 }
5659 }
5660 }
5661
5662 module_call_init(MODULE_INIT_DEVICE);
5663
5664 if (watchdog) {
5665 i = select_watchdog(watchdog);
5666 if (i > 0)
5667 exit (i == 1 ? 1 : 0);
5668 }
5669
5670 if (machine->compat_props) {
5671 qdev_prop_register_compat(machine->compat_props);
5672 }
5673 machine->init(ram_size, boot_devices,
5674 kernel_filename, kernel_cmdline, initrd_filename, cpu_model);
5675
5676
5677 #ifndef _WIN32
5678 /* must be after terminal init, SDL library changes signal handlers */
5679 sighandler_setup();
5680 #endif
5681
5682 for (env = first_cpu; env != NULL; env = env->next_cpu) {
5683 for (i = 0; i < nb_numa_nodes; i++) {
5684 if (node_cpumask[i] & (1 << env->cpu_index)) {
5685 env->numa_node = i;
5686 }
5687 }
5688 }
5689
5690 current_machine = machine;
5691
5692 /* init USB devices */
5693 if (usb_enabled) {
5694 if (foreach_device_config(DEV_USB, usb_parse) < 0)
5695 exit(1);
5696 }
5697
5698 /* init generic devices */
5699 if (qemu_opts_foreach(&qemu_device_opts, device_init_func, NULL, 1) != 0)
5700 exit(1);
5701
5702 if (!display_state)
5703 dumb_display_init();
5704 /* just use the first displaystate for the moment */
5705 ds = display_state;
5706
5707 if (display_type == DT_DEFAULT) {
5708 #if defined(CONFIG_SDL) || defined(CONFIG_COCOA)
5709 display_type = DT_SDL;
5710 #else
5711 display_type = DT_VNC;
5712 vnc_display = "localhost:0,to=99";
5713 show_vnc_port = 1;
5714 #endif
5715 }
5716
5717
5718 switch (display_type) {
5719 case DT_NOGRAPHIC:
5720 break;
5721 #if defined(CONFIG_CURSES)
5722 case DT_CURSES:
5723 curses_display_init(ds, full_screen);
5724 break;
5725 #endif
5726 #if defined(CONFIG_SDL)
5727 case DT_SDL:
5728 sdl_display_init(ds, full_screen, no_frame);
5729 break;
5730 #elif defined(CONFIG_COCOA)
5731 case DT_SDL:
5732 cocoa_display_init(ds, full_screen);
5733 break;
5734 #endif
5735 case DT_VNC:
5736 vnc_display_init(ds);
5737 if (vnc_display_open(ds, vnc_display) < 0)
5738 exit(1);
5739
5740 if (show_vnc_port) {
5741 printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));
5742 }
5743 break;
5744 default:
5745 break;
5746 }
5747 dpy_resize(ds);
5748
5749 dcl = ds->listeners;
5750 while (dcl != NULL) {
5751 if (dcl->dpy_refresh != NULL) {
5752 ds->gui_timer = qemu_new_timer(rt_clock, gui_update, ds);
5753 qemu_mod_timer(ds->gui_timer, qemu_get_clock(rt_clock));
5754 }
5755 dcl = dcl->next;
5756 }
5757
5758 if (display_type == DT_NOGRAPHIC || display_type == DT_VNC) {
5759 nographic_timer = qemu_new_timer(rt_clock, nographic_update, NULL);
5760 qemu_mod_timer(nographic_timer, qemu_get_clock(rt_clock));
5761 }
5762
5763 text_consoles_set_display(display_state);
5764 qemu_chr_initial_reset();
5765
5766 for (i = 0; i < MAX_MONITOR_DEVICES; i++) {
5767 if (monitor_devices[i] && monitor_hds[i]) {
5768 monitor_init(monitor_hds[i],
5769 MONITOR_USE_READLINE |
5770 ((i == 0) ? MONITOR_IS_DEFAULT : 0));
5771 }
5772 }
5773
5774 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
5775 const char *devname = serial_devices[i];
5776 if (devname && strcmp(devname, "none")) {
5777 if (strstart(devname, "vc", 0))
5778 qemu_chr_printf(serial_hds[i], "serial%d console\r\n", i);
5779 }
5780 }
5781
5782 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
5783 const char *devname = parallel_devices[i];
5784 if (devname && strcmp(devname, "none")) {
5785 if (strstart(devname, "vc", 0))
5786 qemu_chr_printf(parallel_hds[i], "parallel%d console\r\n", i);
5787 }
5788 }
5789
5790 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
5791 const char *devname = virtio_consoles[i];
5792 if (virtcon_hds[i] && devname) {
5793 if (strstart(devname, "vc", 0))
5794 qemu_chr_printf(virtcon_hds[i], "virtio console%d\r\n", i);
5795 }
5796 }
5797
5798 if (gdbstub_dev && gdbserver_start(gdbstub_dev) < 0) {
5799 fprintf(stderr, "qemu: could not open gdbserver on device '%s'\n",
5800 gdbstub_dev);
5801 exit(1);
5802 }
5803
5804 qdev_machine_creation_done();
5805
5806 rom_load_all();
5807
5808 if (loadvm) {
5809 if (load_vmstate(cur_mon, loadvm) < 0) {
5810 autostart = 0;
5811 }
5812 }
5813
5814 if (incoming) {
5815 qemu_start_incoming_migration(incoming);
5816 } else if (autostart) {
5817 vm_start();
5818 }
5819
5820 #ifndef _WIN32
5821 if (daemonize) {
5822 uint8_t status = 0;
5823 ssize_t len;
5824
5825 again1:
5826 len = write(fds[1], &status, 1);
5827 if (len == -1 && (errno == EINTR))
5828 goto again1;
5829
5830 if (len != 1)
5831 exit(1);
5832
5833 chdir("/");
5834 TFR(fd = open("/dev/null", O_RDWR));
5835 if (fd == -1)
5836 exit(1);
5837 }
5838
5839 if (run_as) {
5840 pwd = getpwnam(run_as);
5841 if (!pwd) {
5842 fprintf(stderr, "User \"%s\" doesn't exist\n", run_as);
5843 exit(1);
5844 }
5845 }
5846
5847 if (chroot_dir) {
5848 if (chroot(chroot_dir) < 0) {
5849 fprintf(stderr, "chroot failed\n");
5850 exit(1);
5851 }
5852 chdir("/");
5853 }
5854
5855 if (run_as) {
5856 if (setgid(pwd->pw_gid) < 0) {
5857 fprintf(stderr, "Failed to setgid(%d)\n", pwd->pw_gid);
5858 exit(1);
5859 }
5860 if (setuid(pwd->pw_uid) < 0) {
5861 fprintf(stderr, "Failed to setuid(%d)\n", pwd->pw_uid);
5862 exit(1);
5863 }
5864 if (setuid(0) != -1) {
5865 fprintf(stderr, "Dropping privileges failed\n");
5866 exit(1);
5867 }
5868 }
5869
5870 if (daemonize) {
5871 dup2(fd, 0);
5872 dup2(fd, 1);
5873 dup2(fd, 2);
5874
5875 close(fd);
5876 }
5877 #endif
5878
5879 main_loop();
5880 quit_timers();
5881 net_cleanup();
5882
5883 return 0;
5884 }
Scott Tsai's queue for QEMU