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Merge commit 'mst/for_anthony' into mst
[qemu/aliguori-queue.git] / vl.c
blob44763af714d4aeb0e768742ac9b7f2e2ebe7f25c
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(__FreeBSD_kernel__) || defined(__DragonFly__)
54 #include <libutil.h>
55 #else
56 #include <util.h>
57 #endif
58 #else
59 #ifdef __linux__
60 #include <pty.h>
61 #include <malloc.h>
62 #include <linux/rtc.h>
63 #include <sys/prctl.h>
64
65 /* For the benefit of older linux systems which don't supply it,
66 we use a local copy of hpet.h. */
67 /* #include <linux/hpet.h> */
68 #include "hpet.h"
69
70 #include <linux/ppdev.h>
71 #include <linux/parport.h>
72 #endif
73 #ifdef __sun__
74 #include <sys/stat.h>
75 #include <sys/ethernet.h>
76 #include <sys/sockio.h>
77 #include <netinet/arp.h>
78 #include <netinet/in.h>
79 #include <netinet/in_systm.h>
80 #include <netinet/ip.h>
81 #include <netinet/ip_icmp.h> // must come after ip.h
82 #include <netinet/udp.h>
83 #include <netinet/tcp.h>
84 #include <net/if.h>
85 #include <syslog.h>
86 #include <stropts.h>
87 /* See MySQL bug #7156 (http://bugs.mysql.com/bug.php?id=7156) for
88 discussion about Solaris header problems */
89 extern int madvise(caddr_t, size_t, int);
90 #endif
91 #endif
92 #endif
93
94 #if defined(__OpenBSD__)
95 #include <util.h>
96 #endif
97
98 #if defined(CONFIG_VDE)
99 #include <libvdeplug.h>
100 #endif
101
102 #ifdef _WIN32
103 #include <windows.h>
104 #include <mmsystem.h>
105 #endif
106
107 #ifdef CONFIG_SDL
108 #if defined(__APPLE__) || defined(main)
109 #include <SDL.h>
110 int qemu_main(int argc, char **argv, char **envp);
111 int main(int argc, char **argv)
112 {
113 return qemu_main(argc, argv, NULL);
114 }
115 #undef main
116 #define main qemu_main
117 #endif
118 #endif /* CONFIG_SDL */
119
120 #ifdef CONFIG_COCOA
121 #undef main
122 #define main qemu_main
123 #endif /* CONFIG_COCOA */
124
125 #include "hw/hw.h"
126 #include "hw/boards.h"
127 #include "hw/usb.h"
128 #include "hw/pcmcia.h"
129 #include "hw/pc.h"
130 #include "hw/audiodev.h"
131 #include "hw/isa.h"
132 #include "hw/baum.h"
133 #include "hw/bt.h"
134 #include "hw/watchdog.h"
135 #include "hw/smbios.h"
136 #include "hw/xen.h"
137 #include "hw/qdev.h"
138 #include "hw/loader.h"
139 #include "bt-host.h"
140 #include "net.h"
141 #include "monitor.h"
142 #include "console.h"
143 #include "sysemu.h"
144 #include "gdbstub.h"
145 #include "qemu-timer.h"
146 #include "qemu-char.h"
147 #include "cache-utils.h"
148 #include "block.h"
149 #include "block_int.h"
150 #include "block-migration.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__) || defined(__FreeBSD_kernel__)
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__) || defined(__FreeBSD_kernel__)
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_whitelisted_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 if (stage == 3) {
2976 /* flush all remaining blocks regardless of rate limiting */
2977 while (ram_save_block(f) != 0) {
2978 bytes_transferred += TARGET_PAGE_SIZE;
2979 }
2980 cpu_physical_memory_set_dirty_tracking(0);
2981 }
2982
2983 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
2984
2985 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
2986
2987 return (stage == 2) && (expected_time <= migrate_max_downtime());
2988 }
2989
2990 static int ram_load(QEMUFile *f, void *opaque, int version_id)
2991 {
2992 ram_addr_t addr;
2993 int flags;
2994
2995 if (version_id != 3)
2996 return -EINVAL;
2997
2998 do {
2999 addr = qemu_get_be64(f);
3000
3001 flags = addr & ~TARGET_PAGE_MASK;
3002 addr &= TARGET_PAGE_MASK;
3003
3004 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
3005 if (addr != last_ram_offset)
3006 return -EINVAL;
3007 }
3008
3009 if (flags & RAM_SAVE_FLAG_COMPRESS) {
3010 uint8_t ch = qemu_get_byte(f);
3011 memset(qemu_get_ram_ptr(addr), ch, TARGET_PAGE_SIZE);
3012 #ifndef _WIN32
3013 if (ch == 0 &&
3014 (!kvm_enabled() || kvm_has_sync_mmu())) {
3015 madvise(qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE, MADV_DONTNEED);
3016 }
3017 #endif
3018 } else if (flags & RAM_SAVE_FLAG_PAGE)
3019 qemu_get_buffer(f, qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE);
3020 } while (!(flags & RAM_SAVE_FLAG_EOS));
3021
3022 return 0;
3023 }
3024
3025 void qemu_service_io(void)
3026 {
3027 qemu_notify_event();
3028 }
3029
3030 /***********************************************************/
3031 /* machine registration */
3032
3033 static QEMUMachine *first_machine = NULL;
3034 QEMUMachine *current_machine = NULL;
3035
3036 int qemu_register_machine(QEMUMachine *m)
3037 {
3038 QEMUMachine **pm;
3039 pm = &first_machine;
3040 while (*pm != NULL)
3041 pm = &(*pm)->next;
3042 m->next = NULL;
3043 *pm = m;
3044 return 0;
3045 }
3046
3047 static QEMUMachine *find_machine(const char *name)
3048 {
3049 QEMUMachine *m;
3050
3051 for(m = first_machine; m != NULL; m = m->next) {
3052 if (!strcmp(m->name, name))
3053 return m;
3054 if (m->alias && !strcmp(m->alias, name))
3055 return m;
3056 }
3057 return NULL;
3058 }
3059
3060 static QEMUMachine *find_default_machine(void)
3061 {
3062 QEMUMachine *m;
3063
3064 for(m = first_machine; m != NULL; m = m->next) {
3065 if (m->is_default) {
3066 return m;
3067 }
3068 }
3069 return NULL;
3070 }
3071
3072 /***********************************************************/
3073 /* main execution loop */
3074
3075 static void gui_update(void *opaque)
3076 {
3077 uint64_t interval = GUI_REFRESH_INTERVAL;
3078 DisplayState *ds = opaque;
3079 DisplayChangeListener *dcl = ds->listeners;
3080
3081 dpy_refresh(ds);
3082
3083 while (dcl != NULL) {
3084 if (dcl->gui_timer_interval &&
3085 dcl->gui_timer_interval < interval)
3086 interval = dcl->gui_timer_interval;
3087 dcl = dcl->next;
3088 }
3089 qemu_mod_timer(ds->gui_timer, interval + qemu_get_clock(rt_clock));
3090 }
3091
3092 static void nographic_update(void *opaque)
3093 {
3094 uint64_t interval = GUI_REFRESH_INTERVAL;
3095
3096 qemu_mod_timer(nographic_timer, interval + qemu_get_clock(rt_clock));
3097 }
3098
3099 struct vm_change_state_entry {
3100 VMChangeStateHandler *cb;
3101 void *opaque;
3102 QLIST_ENTRY (vm_change_state_entry) entries;
3103 };
3104
3105 static QLIST_HEAD(vm_change_state_head, vm_change_state_entry) vm_change_state_head;
3106
3107 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
3108 void *opaque)
3109 {
3110 VMChangeStateEntry *e;
3111
3112 e = qemu_mallocz(sizeof (*e));
3113
3114 e->cb = cb;
3115 e->opaque = opaque;
3116 QLIST_INSERT_HEAD(&vm_change_state_head, e, entries);
3117 return e;
3118 }
3119
3120 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
3121 {
3122 QLIST_REMOVE (e, entries);
3123 qemu_free (e);
3124 }
3125
3126 static void vm_state_notify(int running, int reason)
3127 {
3128 VMChangeStateEntry *e;
3129
3130 for (e = vm_change_state_head.lh_first; e; e = e->entries.le_next) {
3131 e->cb(e->opaque, running, reason);
3132 }
3133 }
3134
3135 static void resume_all_vcpus(void);
3136 static void pause_all_vcpus(void);
3137
3138 void vm_start(void)
3139 {
3140 if (!vm_running) {
3141 cpu_enable_ticks();
3142 vm_running = 1;
3143 vm_state_notify(1, 0);
3144 qemu_rearm_alarm_timer(alarm_timer);
3145 resume_all_vcpus();
3146 }
3147 }
3148
3149 /* reset/shutdown handler */
3150
3151 typedef struct QEMUResetEntry {
3152 QTAILQ_ENTRY(QEMUResetEntry) entry;
3153 QEMUResetHandler *func;
3154 void *opaque;
3155 } QEMUResetEntry;
3156
3157 static QTAILQ_HEAD(reset_handlers, QEMUResetEntry) reset_handlers =
3158 QTAILQ_HEAD_INITIALIZER(reset_handlers);
3159 static int reset_requested;
3160 static int shutdown_requested;
3161 static int powerdown_requested;
3162 static int debug_requested;
3163 static int vmstop_requested;
3164
3165 int qemu_shutdown_requested(void)
3166 {
3167 int r = shutdown_requested;
3168 shutdown_requested = 0;
3169 return r;
3170 }
3171
3172 int qemu_reset_requested(void)
3173 {
3174 int r = reset_requested;
3175 reset_requested = 0;
3176 return r;
3177 }
3178
3179 int qemu_powerdown_requested(void)
3180 {
3181 int r = powerdown_requested;
3182 powerdown_requested = 0;
3183 return r;
3184 }
3185
3186 static int qemu_debug_requested(void)
3187 {
3188 int r = debug_requested;
3189 debug_requested = 0;
3190 return r;
3191 }
3192
3193 static int qemu_vmstop_requested(void)
3194 {
3195 int r = vmstop_requested;
3196 vmstop_requested = 0;
3197 return r;
3198 }
3199
3200 static void do_vm_stop(int reason)
3201 {
3202 if (vm_running) {
3203 cpu_disable_ticks();
3204 vm_running = 0;
3205 pause_all_vcpus();
3206 vm_state_notify(0, reason);
3207 }
3208 }
3209
3210 void qemu_register_reset(QEMUResetHandler *func, void *opaque)
3211 {
3212 QEMUResetEntry *re = qemu_mallocz(sizeof(QEMUResetEntry));
3213
3214 re->func = func;
3215 re->opaque = opaque;
3216 QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
3217 }
3218
3219 void qemu_unregister_reset(QEMUResetHandler *func, void *opaque)
3220 {
3221 QEMUResetEntry *re;
3222
3223 QTAILQ_FOREACH(re, &reset_handlers, entry) {
3224 if (re->func == func && re->opaque == opaque) {
3225 QTAILQ_REMOVE(&reset_handlers, re, entry);
3226 qemu_free(re);
3227 return;
3228 }
3229 }
3230 }
3231
3232 void qemu_system_reset(void)
3233 {
3234 QEMUResetEntry *re, *nre;
3235
3236 /* reset all devices */
3237 QTAILQ_FOREACH_SAFE(re, &reset_handlers, entry, nre) {
3238 re->func(re->opaque);
3239 }
3240 }
3241
3242 void qemu_system_reset_request(void)
3243 {
3244 if (no_reboot) {
3245 shutdown_requested = 1;
3246 } else {
3247 reset_requested = 1;
3248 }
3249 qemu_notify_event();
3250 }
3251
3252 void qemu_system_shutdown_request(void)
3253 {
3254 shutdown_requested = 1;
3255 qemu_notify_event();
3256 }
3257
3258 void qemu_system_powerdown_request(void)
3259 {
3260 powerdown_requested = 1;
3261 qemu_notify_event();
3262 }
3263
3264 #ifdef CONFIG_IOTHREAD
3265 static void qemu_system_vmstop_request(int reason)
3266 {
3267 vmstop_requested = reason;
3268 qemu_notify_event();
3269 }
3270 #endif
3271
3272 #ifndef _WIN32
3273 static int io_thread_fd = -1;
3274
3275 static void qemu_event_increment(void)
3276 {
3277 static const char byte = 0;
3278
3279 if (io_thread_fd == -1)
3280 return;
3281
3282 write(io_thread_fd, &byte, sizeof(byte));
3283 }
3284
3285 static void qemu_event_read(void *opaque)
3286 {
3287 int fd = (unsigned long)opaque;
3288 ssize_t len;
3289
3290 /* Drain the notify pipe */
3291 do {
3292 char buffer[512];
3293 len = read(fd, buffer, sizeof(buffer));
3294 } while ((len == -1 && errno == EINTR) || len > 0);
3295 }
3296
3297 static int qemu_event_init(void)
3298 {
3299 int err;
3300 int fds[2];
3301
3302 err = pipe(fds);
3303 if (err == -1)
3304 return -errno;
3305
3306 err = fcntl_setfl(fds[0], O_NONBLOCK);
3307 if (err < 0)
3308 goto fail;
3309
3310 err = fcntl_setfl(fds[1], O_NONBLOCK);
3311 if (err < 0)
3312 goto fail;
3313
3314 qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL,
3315 (void *)(unsigned long)fds[0]);
3316
3317 io_thread_fd = fds[1];
3318 return 0;
3319
3320 fail:
3321 close(fds[0]);
3322 close(fds[1]);
3323 return err;
3324 }
3325 #else
3326 HANDLE qemu_event_handle;
3327
3328 static void dummy_event_handler(void *opaque)
3329 {
3330 }
3331
3332 static int qemu_event_init(void)
3333 {
3334 qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
3335 if (!qemu_event_handle) {
3336 fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
3337 return -1;
3338 }
3339 qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
3340 return 0;
3341 }
3342
3343 static void qemu_event_increment(void)
3344 {
3345 if (!SetEvent(qemu_event_handle)) {
3346 fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
3347 GetLastError());
3348 exit (1);
3349 }
3350 }
3351 #endif
3352
3353 static int cpu_can_run(CPUState *env)
3354 {
3355 if (env->stop)
3356 return 0;
3357 if (env->stopped)
3358 return 0;
3359 return 1;
3360 }
3361
3362 #ifndef CONFIG_IOTHREAD
3363 static int qemu_init_main_loop(void)
3364 {
3365 return qemu_event_init();
3366 }
3367
3368 void qemu_init_vcpu(void *_env)
3369 {
3370 CPUState *env = _env;
3371
3372 if (kvm_enabled())
3373 kvm_init_vcpu(env);
3374 env->nr_cores = smp_cores;
3375 env->nr_threads = smp_threads;
3376 return;
3377 }
3378
3379 int qemu_cpu_self(void *env)
3380 {
3381 return 1;
3382 }
3383
3384 static void resume_all_vcpus(void)
3385 {
3386 }
3387
3388 static void pause_all_vcpus(void)
3389 {
3390 }
3391
3392 void qemu_cpu_kick(void *env)
3393 {
3394 return;
3395 }
3396
3397 void qemu_notify_event(void)
3398 {
3399 CPUState *env = cpu_single_env;
3400
3401 if (env) {
3402 cpu_exit(env);
3403 }
3404 }
3405
3406 void qemu_mutex_lock_iothread(void) {}
3407 void qemu_mutex_unlock_iothread(void) {}
3408
3409 void vm_stop(int reason)
3410 {
3411 do_vm_stop(reason);
3412 }
3413
3414 #else /* CONFIG_IOTHREAD */
3415
3416 #include "qemu-thread.h"
3417
3418 QemuMutex qemu_global_mutex;
3419 static QemuMutex qemu_fair_mutex;
3420
3421 static QemuThread io_thread;
3422
3423 static QemuThread *tcg_cpu_thread;
3424 static QemuCond *tcg_halt_cond;
3425
3426 static int qemu_system_ready;
3427 /* cpu creation */
3428 static QemuCond qemu_cpu_cond;
3429 /* system init */
3430 static QemuCond qemu_system_cond;
3431 static QemuCond qemu_pause_cond;
3432
3433 static void block_io_signals(void);
3434 static void unblock_io_signals(void);
3435 static int tcg_has_work(void);
3436
3437 static int qemu_init_main_loop(void)
3438 {
3439 int ret;
3440
3441 ret = qemu_event_init();
3442 if (ret)
3443 return ret;
3444
3445 qemu_cond_init(&qemu_pause_cond);
3446 qemu_mutex_init(&qemu_fair_mutex);
3447 qemu_mutex_init(&qemu_global_mutex);
3448 qemu_mutex_lock(&qemu_global_mutex);
3449
3450 unblock_io_signals();
3451 qemu_thread_self(&io_thread);
3452
3453 return 0;
3454 }
3455
3456 static void qemu_wait_io_event(CPUState *env)
3457 {
3458 while (!tcg_has_work())
3459 qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
3460
3461 qemu_mutex_unlock(&qemu_global_mutex);
3462
3463 /*
3464 * Users of qemu_global_mutex can be starved, having no chance
3465 * to acquire it since this path will get to it first.
3466 * So use another lock to provide fairness.
3467 */
3468 qemu_mutex_lock(&qemu_fair_mutex);
3469 qemu_mutex_unlock(&qemu_fair_mutex);
3470
3471 qemu_mutex_lock(&qemu_global_mutex);
3472 if (env->stop) {
3473 env->stop = 0;
3474 env->stopped = 1;
3475 qemu_cond_signal(&qemu_pause_cond);
3476 }
3477 }
3478
3479 static int qemu_cpu_exec(CPUState *env);
3480
3481 static void *kvm_cpu_thread_fn(void *arg)
3482 {
3483 CPUState *env = arg;
3484
3485 block_io_signals();
3486 qemu_thread_self(env->thread);
3487 if (kvm_enabled())
3488 kvm_init_vcpu(env);
3489
3490 /* signal CPU creation */
3491 qemu_mutex_lock(&qemu_global_mutex);
3492 env->created = 1;
3493 qemu_cond_signal(&qemu_cpu_cond);
3494
3495 /* and wait for machine initialization */
3496 while (!qemu_system_ready)
3497 qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
3498
3499 while (1) {
3500 if (cpu_can_run(env))
3501 qemu_cpu_exec(env);
3502 qemu_wait_io_event(env);
3503 }
3504
3505 return NULL;
3506 }
3507
3508 static void tcg_cpu_exec(void);
3509
3510 static void *tcg_cpu_thread_fn(void *arg)
3511 {
3512 CPUState *env = arg;
3513
3514 block_io_signals();
3515 qemu_thread_self(env->thread);
3516
3517 /* signal CPU creation */
3518 qemu_mutex_lock(&qemu_global_mutex);
3519 for (env = first_cpu; env != NULL; env = env->next_cpu)
3520 env->created = 1;
3521 qemu_cond_signal(&qemu_cpu_cond);
3522
3523 /* and wait for machine initialization */
3524 while (!qemu_system_ready)
3525 qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
3526
3527 while (1) {
3528 tcg_cpu_exec();
3529 qemu_wait_io_event(cur_cpu);
3530 }
3531
3532 return NULL;
3533 }
3534
3535 void qemu_cpu_kick(void *_env)
3536 {
3537 CPUState *env = _env;
3538 qemu_cond_broadcast(env->halt_cond);
3539 if (kvm_enabled())
3540 qemu_thread_signal(env->thread, SIGUSR1);
3541 }
3542
3543 int qemu_cpu_self(void *_env)
3544 {
3545 CPUState *env = _env;
3546 QemuThread this;
3547
3548 qemu_thread_self(&this);
3549
3550 return qemu_thread_equal(&this, env->thread);
3551 }
3552
3553 static void cpu_signal(int sig)
3554 {
3555 if (cpu_single_env)
3556 cpu_exit(cpu_single_env);
3557 }
3558
3559 static void block_io_signals(void)
3560 {
3561 sigset_t set;
3562 struct sigaction sigact;
3563
3564 sigemptyset(&set);
3565 sigaddset(&set, SIGUSR2);
3566 sigaddset(&set, SIGIO);
3567 sigaddset(&set, SIGALRM);
3568 pthread_sigmask(SIG_BLOCK, &set, NULL);
3569
3570 sigemptyset(&set);
3571 sigaddset(&set, SIGUSR1);
3572 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
3573
3574 memset(&sigact, 0, sizeof(sigact));
3575 sigact.sa_handler = cpu_signal;
3576 sigaction(SIGUSR1, &sigact, NULL);
3577 }
3578
3579 static void unblock_io_signals(void)
3580 {
3581 sigset_t set;
3582
3583 sigemptyset(&set);
3584 sigaddset(&set, SIGUSR2);
3585 sigaddset(&set, SIGIO);
3586 sigaddset(&set, SIGALRM);
3587 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
3588
3589 sigemptyset(&set);
3590 sigaddset(&set, SIGUSR1);
3591 pthread_sigmask(SIG_BLOCK, &set, NULL);
3592 }
3593
3594 static void qemu_signal_lock(unsigned int msecs)
3595 {
3596 qemu_mutex_lock(&qemu_fair_mutex);
3597
3598 while (qemu_mutex_trylock(&qemu_global_mutex)) {
3599 qemu_thread_signal(tcg_cpu_thread, SIGUSR1);
3600 if (!qemu_mutex_timedlock(&qemu_global_mutex, msecs))
3601 break;
3602 }
3603 qemu_mutex_unlock(&qemu_fair_mutex);
3604 }
3605
3606 void qemu_mutex_lock_iothread(void)
3607 {
3608 if (kvm_enabled()) {
3609 qemu_mutex_lock(&qemu_fair_mutex);
3610 qemu_mutex_lock(&qemu_global_mutex);
3611 qemu_mutex_unlock(&qemu_fair_mutex);
3612 } else
3613 qemu_signal_lock(100);
3614 }
3615
3616 void qemu_mutex_unlock_iothread(void)
3617 {
3618 qemu_mutex_unlock(&qemu_global_mutex);
3619 }
3620
3621 static int all_vcpus_paused(void)
3622 {
3623 CPUState *penv = first_cpu;
3624
3625 while (penv) {
3626 if (!penv->stopped)
3627 return 0;
3628 penv = (CPUState *)penv->next_cpu;
3629 }
3630
3631 return 1;
3632 }
3633
3634 static void pause_all_vcpus(void)
3635 {
3636 CPUState *penv = first_cpu;
3637
3638 while (penv) {
3639 penv->stop = 1;
3640 qemu_thread_signal(penv->thread, SIGUSR1);
3641 qemu_cpu_kick(penv);
3642 penv = (CPUState *)penv->next_cpu;
3643 }
3644
3645 while (!all_vcpus_paused()) {
3646 qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
3647 penv = first_cpu;
3648 while (penv) {
3649 qemu_thread_signal(penv->thread, SIGUSR1);
3650 penv = (CPUState *)penv->next_cpu;
3651 }
3652 }
3653 }
3654
3655 static void resume_all_vcpus(void)
3656 {
3657 CPUState *penv = first_cpu;
3658
3659 while (penv) {
3660 penv->stop = 0;
3661 penv->stopped = 0;
3662 qemu_thread_signal(penv->thread, SIGUSR1);
3663 qemu_cpu_kick(penv);
3664 penv = (CPUState *)penv->next_cpu;
3665 }
3666 }
3667
3668 static void tcg_init_vcpu(void *_env)
3669 {
3670 CPUState *env = _env;
3671 /* share a single thread for all cpus with TCG */
3672 if (!tcg_cpu_thread) {
3673 env->thread = qemu_mallocz(sizeof(QemuThread));
3674 env->halt_cond = qemu_mallocz(sizeof(QemuCond));
3675 qemu_cond_init(env->halt_cond);
3676 qemu_thread_create(env->thread, tcg_cpu_thread_fn, env);
3677 while (env->created == 0)
3678 qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
3679 tcg_cpu_thread = env->thread;
3680 tcg_halt_cond = env->halt_cond;
3681 } else {
3682 env->thread = tcg_cpu_thread;
3683 env->halt_cond = tcg_halt_cond;
3684 }
3685 }
3686
3687 static void kvm_start_vcpu(CPUState *env)
3688 {
3689 env->thread = qemu_mallocz(sizeof(QemuThread));
3690 env->halt_cond = qemu_mallocz(sizeof(QemuCond));
3691 qemu_cond_init(env->halt_cond);
3692 qemu_thread_create(env->thread, kvm_cpu_thread_fn, env);
3693 while (env->created == 0)
3694 qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
3695 }
3696
3697 void qemu_init_vcpu(void *_env)
3698 {
3699 CPUState *env = _env;
3700
3701 if (kvm_enabled())
3702 kvm_start_vcpu(env);
3703 else
3704 tcg_init_vcpu(env);
3705 env->nr_cores = smp_cores;
3706 env->nr_threads = smp_threads;
3707 }
3708
3709 void qemu_notify_event(void)
3710 {
3711 qemu_event_increment();
3712 }
3713
3714 void vm_stop(int reason)
3715 {
3716 QemuThread me;
3717 qemu_thread_self(&me);
3718
3719 if (!qemu_thread_equal(&me, &io_thread)) {
3720 qemu_system_vmstop_request(reason);
3721 /*
3722 * FIXME: should not return to device code in case
3723 * vm_stop() has been requested.
3724 */
3725 if (cpu_single_env) {
3726 cpu_exit(cpu_single_env);
3727 cpu_single_env->stop = 1;
3728 }
3729 return;
3730 }
3731 do_vm_stop(reason);
3732 }
3733
3734 #endif
3735
3736
3737 #ifdef _WIN32
3738 static void host_main_loop_wait(int *timeout)
3739 {
3740 int ret, ret2, i;
3741 PollingEntry *pe;
3742
3743
3744 /* XXX: need to suppress polling by better using win32 events */
3745 ret = 0;
3746 for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
3747 ret |= pe->func(pe->opaque);
3748 }
3749 if (ret == 0) {
3750 int err;
3751 WaitObjects *w = &wait_objects;
3752
3753 ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
3754 if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
3755 if (w->func[ret - WAIT_OBJECT_0])
3756 w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
3757
3758 /* Check for additional signaled events */
3759 for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
3760
3761 /* Check if event is signaled */
3762 ret2 = WaitForSingleObject(w->events[i], 0);
3763 if(ret2 == WAIT_OBJECT_0) {
3764 if (w->func[i])
3765 w->func[i](w->opaque[i]);
3766 } else if (ret2 == WAIT_TIMEOUT) {
3767 } else {
3768 err = GetLastError();
3769 fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
3770 }
3771 }
3772 } else if (ret == WAIT_TIMEOUT) {
3773 } else {
3774 err = GetLastError();
3775 fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
3776 }
3777 }
3778
3779 *timeout = 0;
3780 }
3781 #else
3782 static void host_main_loop_wait(int *timeout)
3783 {
3784 }
3785 #endif
3786
3787 void main_loop_wait(int timeout)
3788 {
3789 IOHandlerRecord *ioh;
3790 fd_set rfds, wfds, xfds;
3791 int ret, nfds;
3792 struct timeval tv;
3793
3794 qemu_bh_update_timeout(&timeout);
3795
3796 host_main_loop_wait(&timeout);
3797
3798 /* poll any events */
3799 /* XXX: separate device handlers from system ones */
3800 nfds = -1;
3801 FD_ZERO(&rfds);
3802 FD_ZERO(&wfds);
3803 FD_ZERO(&xfds);
3804 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
3805 if (ioh->deleted)
3806 continue;
3807 if (ioh->fd_read &&
3808 (!ioh->fd_read_poll ||
3809 ioh->fd_read_poll(ioh->opaque) != 0)) {
3810 FD_SET(ioh->fd, &rfds);
3811 if (ioh->fd > nfds)
3812 nfds = ioh->fd;
3813 }
3814 if (ioh->fd_write) {
3815 FD_SET(ioh->fd, &wfds);
3816 if (ioh->fd > nfds)
3817 nfds = ioh->fd;
3818 }
3819 }
3820
3821 tv.tv_sec = timeout / 1000;
3822 tv.tv_usec = (timeout % 1000) * 1000;
3823
3824 slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
3825
3826 qemu_mutex_unlock_iothread();
3827 ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
3828 qemu_mutex_lock_iothread();
3829 if (ret > 0) {
3830 IOHandlerRecord **pioh;
3831
3832 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
3833 if (!ioh->deleted && ioh->fd_read && FD_ISSET(ioh->fd, &rfds)) {
3834 ioh->fd_read(ioh->opaque);
3835 }
3836 if (!ioh->deleted && ioh->fd_write && FD_ISSET(ioh->fd, &wfds)) {
3837 ioh->fd_write(ioh->opaque);
3838 }
3839 }
3840
3841 /* remove deleted IO handlers */
3842 pioh = &first_io_handler;
3843 while (*pioh) {
3844 ioh = *pioh;
3845 if (ioh->deleted) {
3846 *pioh = ioh->next;
3847 qemu_free(ioh);
3848 } else
3849 pioh = &ioh->next;
3850 }
3851 }
3852
3853 slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0));
3854
3855 /* rearm timer, if not periodic */
3856 if (alarm_timer->flags & ALARM_FLAG_EXPIRED) {
3857 alarm_timer->flags &= ~ALARM_FLAG_EXPIRED;
3858 qemu_rearm_alarm_timer(alarm_timer);
3859 }
3860
3861 /* vm time timers */
3862 if (vm_running) {
3863 if (!cur_cpu || likely(!(cur_cpu->singlestep_enabled & SSTEP_NOTIMER)))
3864 qemu_run_timers(&active_timers[QEMU_CLOCK_VIRTUAL],
3865 qemu_get_clock(vm_clock));
3866 }
3867
3868 /* real time timers */
3869 qemu_run_timers(&active_timers[QEMU_CLOCK_REALTIME],
3870 qemu_get_clock(rt_clock));
3871
3872 qemu_run_timers(&active_timers[QEMU_CLOCK_HOST],
3873 qemu_get_clock(host_clock));
3874
3875 /* Check bottom-halves last in case any of the earlier events triggered
3876 them. */
3877 qemu_bh_poll();
3878
3879 }
3880
3881 static int qemu_cpu_exec(CPUState *env)
3882 {
3883 int ret;
3884 #ifdef CONFIG_PROFILER
3885 int64_t ti;
3886 #endif
3887
3888 #ifdef CONFIG_PROFILER
3889 ti = profile_getclock();
3890 #endif
3891 if (use_icount) {
3892 int64_t count;
3893 int decr;
3894 qemu_icount -= (env->icount_decr.u16.low + env->icount_extra);
3895 env->icount_decr.u16.low = 0;
3896 env->icount_extra = 0;
3897 count = qemu_next_deadline();
3898 count = (count + (1 << icount_time_shift) - 1)
3899 >> icount_time_shift;
3900 qemu_icount += count;
3901 decr = (count > 0xffff) ? 0xffff : count;
3902 count -= decr;
3903 env->icount_decr.u16.low = decr;
3904 env->icount_extra = count;
3905 }
3906 ret = cpu_exec(env);
3907 #ifdef CONFIG_PROFILER
3908 qemu_time += profile_getclock() - ti;
3909 #endif
3910 if (use_icount) {
3911 /* Fold pending instructions back into the
3912 instruction counter, and clear the interrupt flag. */
3913 qemu_icount -= (env->icount_decr.u16.low
3914 + env->icount_extra);
3915 env->icount_decr.u32 = 0;
3916 env->icount_extra = 0;
3917 }
3918 return ret;
3919 }
3920
3921 static void tcg_cpu_exec(void)
3922 {
3923 int ret = 0;
3924
3925 if (next_cpu == NULL)
3926 next_cpu = first_cpu;
3927 for (; next_cpu != NULL; next_cpu = next_cpu->next_cpu) {
3928 CPUState *env = cur_cpu = next_cpu;
3929
3930 if (!vm_running)
3931 break;
3932 if (timer_alarm_pending) {
3933 timer_alarm_pending = 0;
3934 break;
3935 }
3936 if (cpu_can_run(env))
3937 ret = qemu_cpu_exec(env);
3938 if (ret == EXCP_DEBUG) {
3939 gdb_set_stop_cpu(env);
3940 debug_requested = 1;
3941 break;
3942 }
3943 }
3944 }
3945
3946 static int cpu_has_work(CPUState *env)
3947 {
3948 if (env->stop)
3949 return 1;
3950 if (env->stopped)
3951 return 0;
3952 if (!env->halted)
3953 return 1;
3954 if (qemu_cpu_has_work(env))
3955 return 1;
3956 return 0;
3957 }
3958
3959 static int tcg_has_work(void)
3960 {
3961 CPUState *env;
3962
3963 for (env = first_cpu; env != NULL; env = env->next_cpu)
3964 if (cpu_has_work(env))
3965 return 1;
3966 return 0;
3967 }
3968
3969 static int qemu_calculate_timeout(void)
3970 {
3971 #ifndef CONFIG_IOTHREAD
3972 int timeout;
3973
3974 if (!vm_running)
3975 timeout = 5000;
3976 else if (tcg_has_work())
3977 timeout = 0;
3978 else if (!use_icount)
3979 timeout = 5000;
3980 else {
3981 /* XXX: use timeout computed from timers */
3982 int64_t add;
3983 int64_t delta;
3984 /* Advance virtual time to the next event. */
3985 if (use_icount == 1) {
3986 /* When not using an adaptive execution frequency
3987 we tend to get badly out of sync with real time,
3988 so just delay for a reasonable amount of time. */
3989 delta = 0;
3990 } else {
3991 delta = cpu_get_icount() - cpu_get_clock();
3992 }
3993 if (delta > 0) {
3994 /* If virtual time is ahead of real time then just
3995 wait for IO. */
3996 timeout = (delta / 1000000) + 1;
3997 } else {
3998 /* Wait for either IO to occur or the next
3999 timer event. */
4000 add = qemu_next_deadline();
4001 /* We advance the timer before checking for IO.
4002 Limit the amount we advance so that early IO
4003 activity won't get the guest too far ahead. */
4004 if (add > 10000000)
4005 add = 10000000;
4006 delta += add;
4007 add = (add + (1 << icount_time_shift) - 1)
4008 >> icount_time_shift;
4009 qemu_icount += add;
4010 timeout = delta / 1000000;
4011 if (timeout < 0)
4012 timeout = 0;
4013 }
4014 }
4015
4016 return timeout;
4017 #else /* CONFIG_IOTHREAD */
4018 return 1000;
4019 #endif
4020 }
4021
4022 static int vm_can_run(void)
4023 {
4024 if (powerdown_requested)
4025 return 0;
4026 if (reset_requested)
4027 return 0;
4028 if (shutdown_requested)
4029 return 0;
4030 if (debug_requested)
4031 return 0;
4032 return 1;
4033 }
4034
4035 qemu_irq qemu_system_powerdown;
4036
4037 static void main_loop(void)
4038 {
4039 int r;
4040
4041 #ifdef CONFIG_IOTHREAD
4042 qemu_system_ready = 1;
4043 qemu_cond_broadcast(&qemu_system_cond);
4044 #endif
4045
4046 for (;;) {
4047 do {
4048 #ifdef CONFIG_PROFILER
4049 int64_t ti;
4050 #endif
4051 #ifndef CONFIG_IOTHREAD
4052 tcg_cpu_exec();
4053 #endif
4054 #ifdef CONFIG_PROFILER
4055 ti = profile_getclock();
4056 #endif
4057 main_loop_wait(qemu_calculate_timeout());
4058 #ifdef CONFIG_PROFILER
4059 dev_time += profile_getclock() - ti;
4060 #endif
4061 } while (vm_can_run());
4062
4063 if (qemu_debug_requested())
4064 vm_stop(EXCP_DEBUG);
4065 if (qemu_shutdown_requested()) {
4066 if (no_shutdown) {
4067 vm_stop(0);
4068 no_shutdown = 0;
4069 } else
4070 break;
4071 }
4072 if (qemu_reset_requested()) {
4073 pause_all_vcpus();
4074 qemu_system_reset();
4075 resume_all_vcpus();
4076 }
4077 if (qemu_powerdown_requested()) {
4078 qemu_irq_raise(qemu_system_powerdown);
4079 }
4080 if ((r = qemu_vmstop_requested()))
4081 vm_stop(r);
4082 }
4083 pause_all_vcpus();
4084 }
4085
4086 static void version(void)
4087 {
4088 printf("QEMU PC emulator version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n");
4089 }
4090
4091 static void help(int exitcode)
4092 {
4093 version();
4094 printf("usage: %s [options] [disk_image]\n"
4095 "\n"
4096 "'disk_image' is a raw hard image image for IDE hard disk 0\n"
4097 "\n"
4098 #define DEF(option, opt_arg, opt_enum, opt_help) \
4099 opt_help
4100 #define DEFHEADING(text) stringify(text) "\n"
4101 #include "qemu-options.h"
4102 #undef DEF
4103 #undef DEFHEADING
4104 #undef GEN_DOCS
4105 "\n"
4106 "During emulation, the following keys are useful:\n"
4107 "ctrl-alt-f toggle full screen\n"
4108 "ctrl-alt-n switch to virtual console 'n'\n"
4109 "ctrl-alt toggle mouse and keyboard grab\n"
4110 "\n"
4111 "When using -nographic, press 'ctrl-a h' to get some help.\n"
4112 ,
4113 "qemu",
4114 DEFAULT_RAM_SIZE,
4115 #ifndef _WIN32
4116 DEFAULT_NETWORK_SCRIPT,
4117 DEFAULT_NETWORK_DOWN_SCRIPT,
4118 #endif
4119 DEFAULT_GDBSTUB_PORT,
4120 "/tmp/qemu.log");
4121 exit(exitcode);
4122 }
4123
4124 #define HAS_ARG 0x0001
4125
4126 enum {
4127 #define DEF(option, opt_arg, opt_enum, opt_help) \
4128 opt_enum,
4129 #define DEFHEADING(text)
4130 #include "qemu-options.h"
4131 #undef DEF
4132 #undef DEFHEADING
4133 #undef GEN_DOCS
4134 };
4135
4136 typedef struct QEMUOption {
4137 const char *name;
4138 int flags;
4139 int index;
4140 } QEMUOption;
4141
4142 static const QEMUOption qemu_options[] = {
4143 { "h", 0, QEMU_OPTION_h },
4144 #define DEF(option, opt_arg, opt_enum, opt_help) \
4145 { option, opt_arg, opt_enum },
4146 #define DEFHEADING(text)
4147 #include "qemu-options.h"
4148 #undef DEF
4149 #undef DEFHEADING
4150 #undef GEN_DOCS
4151 { NULL },
4152 };
4153
4154 #ifdef HAS_AUDIO
4155 struct soundhw soundhw[] = {
4156 #ifdef HAS_AUDIO_CHOICE
4157 #if defined(TARGET_I386) || defined(TARGET_MIPS)
4158 {
4159 "pcspk",
4160 "PC speaker",
4161 0,
4162 1,
4163 { .init_isa = pcspk_audio_init }
4164 },
4165 #endif
4166
4167 #ifdef CONFIG_SB16
4168 {
4169 "sb16",
4170 "Creative Sound Blaster 16",
4171 0,
4172 1,
4173 { .init_isa = SB16_init }
4174 },
4175 #endif
4176
4177 #ifdef CONFIG_CS4231A
4178 {
4179 "cs4231a",
4180 "CS4231A",
4181 0,
4182 1,
4183 { .init_isa = cs4231a_init }
4184 },
4185 #endif
4186
4187 #ifdef CONFIG_ADLIB
4188 {
4189 "adlib",
4190 #ifdef HAS_YMF262
4191 "Yamaha YMF262 (OPL3)",
4192 #else
4193 "Yamaha YM3812 (OPL2)",
4194 #endif
4195 0,
4196 1,
4197 { .init_isa = Adlib_init }
4198 },
4199 #endif
4200
4201 #ifdef CONFIG_GUS
4202 {
4203 "gus",
4204 "Gravis Ultrasound GF1",
4205 0,
4206 1,
4207 { .init_isa = GUS_init }
4208 },
4209 #endif
4210
4211 #ifdef CONFIG_AC97
4212 {
4213 "ac97",
4214 "Intel 82801AA AC97 Audio",
4215 0,
4216 0,
4217 { .init_pci = ac97_init }
4218 },
4219 #endif
4220
4221 #ifdef CONFIG_ES1370
4222 {
4223 "es1370",
4224 "ENSONIQ AudioPCI ES1370",
4225 0,
4226 0,
4227 { .init_pci = es1370_init }
4228 },
4229 #endif
4230
4231 #endif /* HAS_AUDIO_CHOICE */
4232
4233 { NULL, NULL, 0, 0, { NULL } }
4234 };
4235
4236 static void select_soundhw (const char *optarg)
4237 {
4238 struct soundhw *c;
4239
4240 if (*optarg == '?') {
4241 show_valid_cards:
4242
4243 printf ("Valid sound card names (comma separated):\n");
4244 for (c = soundhw; c->name; ++c) {
4245 printf ("%-11s %s\n", c->name, c->descr);
4246 }
4247 printf ("\n-soundhw all will enable all of the above\n");
4248 exit (*optarg != '?');
4249 }
4250 else {
4251 size_t l;
4252 const char *p;
4253 char *e;
4254 int bad_card = 0;
4255
4256 if (!strcmp (optarg, "all")) {
4257 for (c = soundhw; c->name; ++c) {
4258 c->enabled = 1;
4259 }
4260 return;
4261 }
4262
4263 p = optarg;
4264 while (*p) {
4265 e = strchr (p, ',');
4266 l = !e ? strlen (p) : (size_t) (e - p);
4267
4268 for (c = soundhw; c->name; ++c) {
4269 if (!strncmp (c->name, p, l) && !c->name[l]) {
4270 c->enabled = 1;
4271 break;
4272 }
4273 }
4274
4275 if (!c->name) {
4276 if (l > 80) {
4277 fprintf (stderr,
4278 "Unknown sound card name (too big to show)\n");
4279 }
4280 else {
4281 fprintf (stderr, "Unknown sound card name `%.*s'\n",
4282 (int) l, p);
4283 }
4284 bad_card = 1;
4285 }
4286 p += l + (e != NULL);
4287 }
4288
4289 if (bad_card)
4290 goto show_valid_cards;
4291 }
4292 }
4293 #endif
4294
4295 static void select_vgahw (const char *p)
4296 {
4297 const char *opts;
4298
4299 vga_interface_type = VGA_NONE;
4300 if (strstart(p, "std", &opts)) {
4301 vga_interface_type = VGA_STD;
4302 } else if (strstart(p, "cirrus", &opts)) {
4303 vga_interface_type = VGA_CIRRUS;
4304 } else if (strstart(p, "vmware", &opts)) {
4305 vga_interface_type = VGA_VMWARE;
4306 } else if (strstart(p, "xenfb", &opts)) {
4307 vga_interface_type = VGA_XENFB;
4308 } else if (!strstart(p, "none", &opts)) {
4309 invalid_vga:
4310 fprintf(stderr, "Unknown vga type: %s\n", p);
4311 exit(1);
4312 }
4313 while (*opts) {
4314 const char *nextopt;
4315
4316 if (strstart(opts, ",retrace=", &nextopt)) {
4317 opts = nextopt;
4318 if (strstart(opts, "dumb", &nextopt))
4319 vga_retrace_method = VGA_RETRACE_DUMB;
4320 else if (strstart(opts, "precise", &nextopt))
4321 vga_retrace_method = VGA_RETRACE_PRECISE;
4322 else goto invalid_vga;
4323 } else goto invalid_vga;
4324 opts = nextopt;
4325 }
4326 }
4327
4328 #ifdef TARGET_I386
4329 static int balloon_parse(const char *arg)
4330 {
4331 QemuOpts *opts;
4332
4333 if (strcmp(arg, "none") == 0) {
4334 return 0;
4335 }
4336
4337 if (!strncmp(arg, "virtio", 6)) {
4338 if (arg[6] == ',') {
4339 /* have params -> parse them */
4340 opts = qemu_opts_parse(&qemu_device_opts, arg+7, NULL);
4341 if (!opts)
4342 return -1;
4343 } else {
4344 /* create empty opts */
4345 opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
4346 }
4347 qemu_opt_set(opts, "driver", "virtio-balloon-pci");
4348 return 0;
4349 }
4350
4351 return -1;
4352 }
4353 #endif
4354
4355 #ifdef _WIN32
4356 static BOOL WINAPI qemu_ctrl_handler(DWORD type)
4357 {
4358 exit(STATUS_CONTROL_C_EXIT);
4359 return TRUE;
4360 }
4361 #endif
4362
4363 int qemu_uuid_parse(const char *str, uint8_t *uuid)
4364 {
4365 int ret;
4366
4367 if(strlen(str) != 36)
4368 return -1;
4369
4370 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
4371 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
4372 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], &uuid[15]);
4373
4374 if(ret != 16)
4375 return -1;
4376
4377 #ifdef TARGET_I386
4378 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
4379 #endif
4380
4381 return 0;
4382 }
4383
4384 #ifndef _WIN32
4385
4386 static void termsig_handler(int signal)
4387 {
4388 qemu_system_shutdown_request();
4389 }
4390
4391 static void sigchld_handler(int signal)
4392 {
4393 waitpid(-1, NULL, WNOHANG);
4394 }
4395
4396 static void sighandler_setup(void)
4397 {
4398 struct sigaction act;
4399
4400 memset(&act, 0, sizeof(act));
4401 act.sa_handler = termsig_handler;
4402 sigaction(SIGINT, &act, NULL);
4403 sigaction(SIGHUP, &act, NULL);
4404 sigaction(SIGTERM, &act, NULL);
4405
4406 act.sa_handler = sigchld_handler;
4407 act.sa_flags = SA_NOCLDSTOP;
4408 sigaction(SIGCHLD, &act, NULL);
4409 }
4410
4411 #endif
4412
4413 #ifdef _WIN32
4414 /* Look for support files in the same directory as the executable. */
4415 static char *find_datadir(const char *argv0)
4416 {
4417 char *p;
4418 char buf[MAX_PATH];
4419 DWORD len;
4420
4421 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
4422 if (len == 0) {
4423 return NULL;
4424 }
4425
4426 buf[len] = 0;
4427 p = buf + len - 1;
4428 while (p != buf && *p != '\\')
4429 p--;
4430 *p = 0;
4431 if (access(buf, R_OK) == 0) {
4432 return qemu_strdup(buf);
4433 }
4434 return NULL;
4435 }
4436 #else /* !_WIN32 */
4437
4438 /* Find a likely location for support files using the location of the binary.
4439 For installed binaries this will be "$bindir/../share/qemu". When
4440 running from the build tree this will be "$bindir/../pc-bios". */
4441 #define SHARE_SUFFIX "/share/qemu"
4442 #define BUILD_SUFFIX "/pc-bios"
4443 static char *find_datadir(const char *argv0)
4444 {
4445 char *dir;
4446 char *p = NULL;
4447 char *res;
4448 char buf[PATH_MAX];
4449 size_t max_len;
4450
4451 #if defined(__linux__)
4452 {
4453 int len;
4454 len = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
4455 if (len > 0) {
4456 buf[len] = 0;
4457 p = buf;
4458 }
4459 }
4460 #elif defined(__FreeBSD__)
4461 {
4462 int len;
4463 len = readlink("/proc/curproc/file", buf, sizeof(buf) - 1);
4464 if (len > 0) {
4465 buf[len] = 0;
4466 p = buf;
4467 }
4468 }
4469 #endif
4470 /* If we don't have any way of figuring out the actual executable
4471 location then try argv[0]. */
4472 if (!p) {
4473 p = realpath(argv0, buf);
4474 if (!p) {
4475 return NULL;
4476 }
4477 }
4478 dir = dirname(p);
4479 dir = dirname(dir);
4480
4481 max_len = strlen(dir) +
4482 MAX(strlen(SHARE_SUFFIX), strlen(BUILD_SUFFIX)) + 1;
4483 res = qemu_mallocz(max_len);
4484 snprintf(res, max_len, "%s%s", dir, SHARE_SUFFIX);
4485 if (access(res, R_OK)) {
4486 snprintf(res, max_len, "%s%s", dir, BUILD_SUFFIX);
4487 if (access(res, R_OK)) {
4488 qemu_free(res);
4489 res = NULL;
4490 }
4491 }
4492
4493 return res;
4494 }
4495 #undef SHARE_SUFFIX
4496 #undef BUILD_SUFFIX
4497 #endif
4498
4499 char *qemu_find_file(int type, const char *name)
4500 {
4501 int len;
4502 const char *subdir;
4503 char *buf;
4504
4505 /* If name contains path separators then try it as a straight path. */
4506 if ((strchr(name, '/') || strchr(name, '\\'))
4507 && access(name, R_OK) == 0) {
4508 return qemu_strdup(name);
4509 }
4510 switch (type) {
4511 case QEMU_FILE_TYPE_BIOS:
4512 subdir = "";
4513 break;
4514 case QEMU_FILE_TYPE_KEYMAP:
4515 subdir = "keymaps/";
4516 break;
4517 default:
4518 abort();
4519 }
4520 len = strlen(data_dir) + strlen(name) + strlen(subdir) + 2;
4521 buf = qemu_mallocz(len);
4522 snprintf(buf, len, "%s/%s%s", data_dir, subdir, name);
4523 if (access(buf, R_OK)) {
4524 qemu_free(buf);
4525 return NULL;
4526 }
4527 return buf;
4528 }
4529
4530 static int device_init_func(QemuOpts *opts, void *opaque)
4531 {
4532 DeviceState *dev;
4533
4534 dev = qdev_device_add(opts);
4535 if (!dev)
4536 return -1;
4537 return 0;
4538 }
4539
4540 struct device_config {
4541 enum {
4542 DEV_USB, /* -usbdevice */
4543 DEV_BT, /* -bt */
4544 } type;
4545 const char *cmdline;
4546 QTAILQ_ENTRY(device_config) next;
4547 };
4548 QTAILQ_HEAD(, device_config) device_configs = QTAILQ_HEAD_INITIALIZER(device_configs);
4549
4550 static void add_device_config(int type, const char *cmdline)
4551 {
4552 struct device_config *conf;
4553
4554 conf = qemu_mallocz(sizeof(*conf));
4555 conf->type = type;
4556 conf->cmdline = cmdline;
4557 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
4558 }
4559
4560 static int foreach_device_config(int type, int (*func)(const char *cmdline))
4561 {
4562 struct device_config *conf;
4563 int rc;
4564
4565 QTAILQ_FOREACH(conf, &device_configs, next) {
4566 if (conf->type != type)
4567 continue;
4568 rc = func(conf->cmdline);
4569 if (0 != rc)
4570 return rc;
4571 }
4572 return 0;
4573 }
4574
4575 int main(int argc, char **argv, char **envp)
4576 {
4577 const char *gdbstub_dev = NULL;
4578 uint32_t boot_devices_bitmap = 0;
4579 int i;
4580 int snapshot, linux_boot, net_boot;
4581 const char *initrd_filename;
4582 const char *kernel_filename, *kernel_cmdline;
4583 char boot_devices[33] = "cad"; /* default to HD->floppy->CD-ROM */
4584 DisplayState *ds;
4585 DisplayChangeListener *dcl;
4586 int cyls, heads, secs, translation;
4587 QemuOpts *hda_opts = NULL, *opts;
4588 int optind;
4589 const char *r, *optarg;
4590 CharDriverState *monitor_hds[MAX_MONITOR_DEVICES];
4591 const char *monitor_devices[MAX_MONITOR_DEVICES];
4592 int monitor_device_index;
4593 const char *serial_devices[MAX_SERIAL_PORTS];
4594 int serial_device_index;
4595 const char *parallel_devices[MAX_PARALLEL_PORTS];
4596 int parallel_device_index;
4597 const char *virtio_consoles[MAX_VIRTIO_CONSOLES];
4598 int virtio_console_index;
4599 const char *loadvm = NULL;
4600 QEMUMachine *machine;
4601 const char *cpu_model;
4602 #ifndef _WIN32
4603 int fds[2];
4604 #endif
4605 int tb_size;
4606 const char *pid_file = NULL;
4607 const char *incoming = NULL;
4608 #ifndef _WIN32
4609 int fd = 0;
4610 struct passwd *pwd = NULL;
4611 const char *chroot_dir = NULL;
4612 const char *run_as = NULL;
4613 #endif
4614 CPUState *env;
4615 int show_vnc_port = 0;
4616
4617 init_clocks();
4618
4619 qemu_errors_to_file(stderr);
4620 qemu_cache_utils_init(envp);
4621
4622 QLIST_INIT (&vm_change_state_head);
4623 #ifndef _WIN32
4624 {
4625 struct sigaction act;
4626 sigfillset(&act.sa_mask);
4627 act.sa_flags = 0;
4628 act.sa_handler = SIG_IGN;
4629 sigaction(SIGPIPE, &act, NULL);
4630 }
4631 #else
4632 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
4633 /* Note: cpu_interrupt() is currently not SMP safe, so we force
4634 QEMU to run on a single CPU */
4635 {
4636 HANDLE h;
4637 DWORD mask, smask;
4638 int i;
4639 h = GetCurrentProcess();
4640 if (GetProcessAffinityMask(h, &mask, &smask)) {
4641 for(i = 0; i < 32; i++) {
4642 if (mask & (1 << i))
4643 break;
4644 }
4645 if (i != 32) {
4646 mask = 1 << i;
4647 SetProcessAffinityMask(h, mask);
4648 }
4649 }
4650 }
4651 #endif
4652
4653 module_call_init(MODULE_INIT_MACHINE);
4654 machine = find_default_machine();
4655 cpu_model = NULL;
4656 initrd_filename = NULL;
4657 ram_size = 0;
4658 snapshot = 0;
4659 kernel_filename = NULL;
4660 kernel_cmdline = "";
4661 cyls = heads = secs = 0;
4662 translation = BIOS_ATA_TRANSLATION_AUTO;
4663
4664 serial_devices[0] = "vc:80Cx24C";
4665 for(i = 1; i < MAX_SERIAL_PORTS; i++)
4666 serial_devices[i] = NULL;
4667 serial_device_index = 0;
4668
4669 parallel_devices[0] = "vc:80Cx24C";
4670 for(i = 1; i < MAX_PARALLEL_PORTS; i++)
4671 parallel_devices[i] = NULL;
4672 parallel_device_index = 0;
4673
4674 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++)
4675 virtio_consoles[i] = NULL;
4676 virtio_console_index = 0;
4677
4678 monitor_devices[0] = "vc:80Cx24C";
4679 for (i = 1; i < MAX_MONITOR_DEVICES; i++) {
4680 monitor_devices[i] = NULL;
4681 }
4682 monitor_device_index = 0;
4683
4684 for (i = 0; i < MAX_NODES; i++) {
4685 node_mem[i] = 0;
4686 node_cpumask[i] = 0;
4687 }
4688
4689 nb_numa_nodes = 0;
4690 nb_nics = 0;
4691
4692 tb_size = 0;
4693 autostart= 1;
4694
4695 optind = 1;
4696 for(;;) {
4697 if (optind >= argc)
4698 break;
4699 r = argv[optind];
4700 if (r[0] != '-') {
4701 hda_opts = drive_add(argv[optind++], HD_ALIAS, 0);
4702 } else {
4703 const QEMUOption *popt;
4704
4705 optind++;
4706 /* Treat --foo the same as -foo. */
4707 if (r[1] == '-')
4708 r++;
4709 popt = qemu_options;
4710 for(;;) {
4711 if (!popt->name) {
4712 fprintf(stderr, "%s: invalid option -- '%s'\n",
4713 argv[0], r);
4714 exit(1);
4715 }
4716 if (!strcmp(popt->name, r + 1))
4717 break;
4718 popt++;
4719 }
4720 if (popt->flags & HAS_ARG) {
4721 if (optind >= argc) {
4722 fprintf(stderr, "%s: option '%s' requires an argument\n",
4723 argv[0], r);
4724 exit(1);
4725 }
4726 optarg = argv[optind++];
4727 } else {
4728 optarg = NULL;
4729 }
4730
4731 switch(popt->index) {
4732 case QEMU_OPTION_M:
4733 machine = find_machine(optarg);
4734 if (!machine) {
4735 QEMUMachine *m;
4736 printf("Supported machines are:\n");
4737 for(m = first_machine; m != NULL; m = m->next) {
4738 if (m->alias)
4739 printf("%-10s %s (alias of %s)\n",
4740 m->alias, m->desc, m->name);
4741 printf("%-10s %s%s\n",
4742 m->name, m->desc,
4743 m->is_default ? " (default)" : "");
4744 }
4745 exit(*optarg != '?');
4746 }
4747 break;
4748 case QEMU_OPTION_cpu:
4749 /* hw initialization will check this */
4750 if (*optarg == '?') {
4751 /* XXX: implement xxx_cpu_list for targets that still miss it */
4752 #if defined(cpu_list)
4753 cpu_list(stdout, &fprintf);
4754 #endif
4755 exit(0);
4756 } else {
4757 cpu_model = optarg;
4758 }
4759 break;
4760 case QEMU_OPTION_initrd:
4761 initrd_filename = optarg;
4762 break;
4763 case QEMU_OPTION_hda:
4764 if (cyls == 0)
4765 hda_opts = drive_add(optarg, HD_ALIAS, 0);
4766 else
4767 hda_opts = drive_add(optarg, HD_ALIAS
4768 ",cyls=%d,heads=%d,secs=%d%s",
4769 0, cyls, heads, secs,
4770 translation == BIOS_ATA_TRANSLATION_LBA ?
4771 ",trans=lba" :
4772 translation == BIOS_ATA_TRANSLATION_NONE ?
4773 ",trans=none" : "");
4774 break;
4775 case QEMU_OPTION_hdb:
4776 case QEMU_OPTION_hdc:
4777 case QEMU_OPTION_hdd:
4778 drive_add(optarg, HD_ALIAS, popt->index - QEMU_OPTION_hda);
4779 break;
4780 case QEMU_OPTION_drive:
4781 drive_add(NULL, "%s", optarg);
4782 break;
4783 case QEMU_OPTION_set:
4784 if (qemu_set_option(optarg) != 0)
4785 exit(1);
4786 break;
4787 case QEMU_OPTION_mtdblock:
4788 drive_add(optarg, MTD_ALIAS);
4789 break;
4790 case QEMU_OPTION_sd:
4791 drive_add(optarg, SD_ALIAS);
4792 break;
4793 case QEMU_OPTION_pflash:
4794 drive_add(optarg, PFLASH_ALIAS);
4795 break;
4796 case QEMU_OPTION_snapshot:
4797 snapshot = 1;
4798 break;
4799 case QEMU_OPTION_hdachs:
4800 {
4801 const char *p;
4802 p = optarg;
4803 cyls = strtol(p, (char **)&p, 0);
4804 if (cyls < 1 || cyls > 16383)
4805 goto chs_fail;
4806 if (*p != ',')
4807 goto chs_fail;
4808 p++;
4809 heads = strtol(p, (char **)&p, 0);
4810 if (heads < 1 || heads > 16)
4811 goto chs_fail;
4812 if (*p != ',')
4813 goto chs_fail;
4814 p++;
4815 secs = strtol(p, (char **)&p, 0);
4816 if (secs < 1 || secs > 63)
4817 goto chs_fail;
4818 if (*p == ',') {
4819 p++;
4820 if (!strcmp(p, "none"))
4821 translation = BIOS_ATA_TRANSLATION_NONE;
4822 else if (!strcmp(p, "lba"))
4823 translation = BIOS_ATA_TRANSLATION_LBA;
4824 else if (!strcmp(p, "auto"))
4825 translation = BIOS_ATA_TRANSLATION_AUTO;
4826 else
4827 goto chs_fail;
4828 } else if (*p != '\0') {
4829 chs_fail:
4830 fprintf(stderr, "qemu: invalid physical CHS format\n");
4831 exit(1);
4832 }
4833 if (hda_opts != NULL) {
4834 char num[16];
4835 snprintf(num, sizeof(num), "%d", cyls);
4836 qemu_opt_set(hda_opts, "cyls", num);
4837 snprintf(num, sizeof(num), "%d", heads);
4838 qemu_opt_set(hda_opts, "heads", num);
4839 snprintf(num, sizeof(num), "%d", secs);
4840 qemu_opt_set(hda_opts, "secs", num);
4841 if (translation == BIOS_ATA_TRANSLATION_LBA)
4842 qemu_opt_set(hda_opts, "trans", "lba");
4843 if (translation == BIOS_ATA_TRANSLATION_NONE)
4844 qemu_opt_set(hda_opts, "trans", "none");
4845 }
4846 }
4847 break;
4848 case QEMU_OPTION_numa:
4849 if (nb_numa_nodes >= MAX_NODES) {
4850 fprintf(stderr, "qemu: too many NUMA nodes\n");
4851 exit(1);
4852 }
4853 numa_add(optarg);
4854 break;
4855 case QEMU_OPTION_nographic:
4856 display_type = DT_NOGRAPHIC;
4857 break;
4858 #ifdef CONFIG_CURSES
4859 case QEMU_OPTION_curses:
4860 display_type = DT_CURSES;
4861 break;
4862 #endif
4863 case QEMU_OPTION_portrait:
4864 graphic_rotate = 1;
4865 break;
4866 case QEMU_OPTION_kernel:
4867 kernel_filename = optarg;
4868 break;
4869 case QEMU_OPTION_append:
4870 kernel_cmdline = optarg;
4871 break;
4872 case QEMU_OPTION_cdrom:
4873 drive_add(optarg, CDROM_ALIAS);
4874 break;
4875 case QEMU_OPTION_boot:
4876 {
4877 static const char * const params[] = {
4878 "order", "once", "menu", NULL
4879 };
4880 char buf[sizeof(boot_devices)];
4881 char *standard_boot_devices;
4882 int legacy = 0;
4883
4884 if (!strchr(optarg, '=')) {
4885 legacy = 1;
4886 pstrcpy(buf, sizeof(buf), optarg);
4887 } else if (check_params(buf, sizeof(buf), params, optarg) < 0) {
4888 fprintf(stderr,
4889 "qemu: unknown boot parameter '%s' in '%s'\n",
4890 buf, optarg);
4891 exit(1);
4892 }
4893
4894 if (legacy ||
4895 get_param_value(buf, sizeof(buf), "order", optarg)) {
4896 boot_devices_bitmap = parse_bootdevices(buf);
4897 pstrcpy(boot_devices, sizeof(boot_devices), buf);
4898 }
4899 if (!legacy) {
4900 if (get_param_value(buf, sizeof(buf),
4901 "once", optarg)) {
4902 boot_devices_bitmap |= parse_bootdevices(buf);
4903 standard_boot_devices = qemu_strdup(boot_devices);
4904 pstrcpy(boot_devices, sizeof(boot_devices), buf);
4905 qemu_register_reset(restore_boot_devices,
4906 standard_boot_devices);
4907 }
4908 if (get_param_value(buf, sizeof(buf),
4909 "menu", optarg)) {
4910 if (!strcmp(buf, "on")) {
4911 boot_menu = 1;
4912 } else if (!strcmp(buf, "off")) {
4913 boot_menu = 0;
4914 } else {
4915 fprintf(stderr,
4916 "qemu: invalid option value '%s'\n",
4917 buf);
4918 exit(1);
4919 }
4920 }
4921 }
4922 }
4923 break;
4924 case QEMU_OPTION_fda:
4925 case QEMU_OPTION_fdb:
4926 drive_add(optarg, FD_ALIAS, popt->index - QEMU_OPTION_fda);
4927 break;
4928 #ifdef TARGET_I386
4929 case QEMU_OPTION_no_fd_bootchk:
4930 fd_bootchk = 0;
4931 break;
4932 #endif
4933 case QEMU_OPTION_netdev:
4934 if (net_client_parse(&qemu_netdev_opts, optarg) == -1) {
4935 exit(1);
4936 }
4937 break;
4938 case QEMU_OPTION_net:
4939 if (net_client_parse(&qemu_net_opts, optarg) == -1) {
4940 exit(1);
4941 }
4942 break;
4943 #ifdef CONFIG_SLIRP
4944 case QEMU_OPTION_tftp:
4945 legacy_tftp_prefix = optarg;
4946 break;
4947 case QEMU_OPTION_bootp:
4948 legacy_bootp_filename = optarg;
4949 break;
4950 #ifndef _WIN32
4951 case QEMU_OPTION_smb:
4952 if (net_slirp_smb(optarg) < 0)
4953 exit(1);
4954 break;
4955 #endif
4956 case QEMU_OPTION_redir:
4957 if (net_slirp_redir(optarg) < 0)
4958 exit(1);
4959 break;
4960 #endif
4961 case QEMU_OPTION_bt:
4962 add_device_config(DEV_BT, optarg);
4963 break;
4964 #ifdef HAS_AUDIO
4965 case QEMU_OPTION_audio_help:
4966 AUD_help ();
4967 exit (0);
4968 break;
4969 case QEMU_OPTION_soundhw:
4970 select_soundhw (optarg);
4971 break;
4972 #endif
4973 case QEMU_OPTION_h:
4974 help(0);
4975 break;
4976 case QEMU_OPTION_version:
4977 version();
4978 exit(0);
4979 break;
4980 case QEMU_OPTION_m: {
4981 uint64_t value;
4982 char *ptr;
4983
4984 value = strtoul(optarg, &ptr, 10);
4985 switch (*ptr) {
4986 case 0: case 'M': case 'm':
4987 value <<= 20;
4988 break;
4989 case 'G': case 'g':
4990 value <<= 30;
4991 break;
4992 default:
4993 fprintf(stderr, "qemu: invalid ram size: %s\n", optarg);
4994 exit(1);
4995 }
4996
4997 /* On 32-bit hosts, QEMU is limited by virtual address space */
4998 if (value > (2047 << 20) && HOST_LONG_BITS == 32) {
4999 fprintf(stderr, "qemu: at most 2047 MB RAM can be simulated\n");
5000 exit(1);
5001 }
5002 if (value != (uint64_t)(ram_addr_t)value) {
5003 fprintf(stderr, "qemu: ram size too large\n");
5004 exit(1);
5005 }
5006 ram_size = value;
5007 break;
5008 }
5009 case QEMU_OPTION_d:
5010 {
5011 int mask;
5012 const CPULogItem *item;
5013
5014 mask = cpu_str_to_log_mask(optarg);
5015 if (!mask) {
5016 printf("Log items (comma separated):\n");
5017 for(item = cpu_log_items; item->mask != 0; item++) {
5018 printf("%-10s %s\n", item->name, item->help);
5019 }
5020 exit(1);
5021 }
5022 cpu_set_log(mask);
5023 }
5024 break;
5025 case QEMU_OPTION_s:
5026 gdbstub_dev = "tcp::" DEFAULT_GDBSTUB_PORT;
5027 break;
5028 case QEMU_OPTION_gdb:
5029 gdbstub_dev = optarg;
5030 break;
5031 case QEMU_OPTION_L:
5032 data_dir = optarg;
5033 break;
5034 case QEMU_OPTION_bios:
5035 bios_name = optarg;
5036 break;
5037 case QEMU_OPTION_singlestep:
5038 singlestep = 1;
5039 break;
5040 case QEMU_OPTION_S:
5041 autostart = 0;
5042 break;
5043 case QEMU_OPTION_k:
5044 keyboard_layout = optarg;
5045 break;
5046 case QEMU_OPTION_localtime:
5047 rtc_utc = 0;
5048 break;
5049 case QEMU_OPTION_vga:
5050 select_vgahw (optarg);
5051 break;
5052 #if defined(TARGET_PPC) || defined(TARGET_SPARC)
5053 case QEMU_OPTION_g:
5054 {
5055 const char *p;
5056 int w, h, depth;
5057 p = optarg;
5058 w = strtol(p, (char **)&p, 10);
5059 if (w <= 0) {
5060 graphic_error:
5061 fprintf(stderr, "qemu: invalid resolution or depth\n");
5062 exit(1);
5063 }
5064 if (*p != 'x')
5065 goto graphic_error;
5066 p++;
5067 h = strtol(p, (char **)&p, 10);
5068 if (h <= 0)
5069 goto graphic_error;
5070 if (*p == 'x') {
5071 p++;
5072 depth = strtol(p, (char **)&p, 10);
5073 if (depth != 8 && depth != 15 && depth != 16 &&
5074 depth != 24 && depth != 32)
5075 goto graphic_error;
5076 } else if (*p == '\0') {
5077 depth = graphic_depth;
5078 } else {
5079 goto graphic_error;
5080 }
5081
5082 graphic_width = w;
5083 graphic_height = h;
5084 graphic_depth = depth;
5085 }
5086 break;
5087 #endif
5088 case QEMU_OPTION_echr:
5089 {
5090 char *r;
5091 term_escape_char = strtol(optarg, &r, 0);
5092 if (r == optarg)
5093 printf("Bad argument to echr\n");
5094 break;
5095 }
5096 case QEMU_OPTION_monitor:
5097 if (monitor_device_index >= MAX_MONITOR_DEVICES) {
5098 fprintf(stderr, "qemu: too many monitor devices\n");
5099 exit(1);
5100 }
5101 monitor_devices[monitor_device_index] = optarg;
5102 monitor_device_index++;
5103 break;
5104 case QEMU_OPTION_chardev:
5105 opts = qemu_opts_parse(&qemu_chardev_opts, optarg, "backend");
5106 if (!opts) {
5107 fprintf(stderr, "parse error: %s\n", optarg);
5108 exit(1);
5109 }
5110 if (qemu_chr_open_opts(opts, NULL) == NULL) {
5111 exit(1);
5112 }
5113 break;
5114 case QEMU_OPTION_serial:
5115 if (serial_device_index >= MAX_SERIAL_PORTS) {
5116 fprintf(stderr, "qemu: too many serial ports\n");
5117 exit(1);
5118 }
5119 serial_devices[serial_device_index] = optarg;
5120 serial_device_index++;
5121 break;
5122 case QEMU_OPTION_watchdog:
5123 if (watchdog) {
5124 fprintf(stderr,
5125 "qemu: only one watchdog option may be given\n");
5126 return 1;
5127 }
5128 watchdog = optarg;
5129 break;
5130 case QEMU_OPTION_watchdog_action:
5131 if (select_watchdog_action(optarg) == -1) {
5132 fprintf(stderr, "Unknown -watchdog-action parameter\n");
5133 exit(1);
5134 }
5135 break;
5136 case QEMU_OPTION_virtiocon:
5137 if (virtio_console_index >= MAX_VIRTIO_CONSOLES) {
5138 fprintf(stderr, "qemu: too many virtio consoles\n");
5139 exit(1);
5140 }
5141 virtio_consoles[virtio_console_index] = optarg;
5142 virtio_console_index++;
5143 break;
5144 case QEMU_OPTION_parallel:
5145 if (parallel_device_index >= MAX_PARALLEL_PORTS) {
5146 fprintf(stderr, "qemu: too many parallel ports\n");
5147 exit(1);
5148 }
5149 parallel_devices[parallel_device_index] = optarg;
5150 parallel_device_index++;
5151 break;
5152 case QEMU_OPTION_loadvm:
5153 loadvm = optarg;
5154 break;
5155 case QEMU_OPTION_full_screen:
5156 full_screen = 1;
5157 break;
5158 #ifdef CONFIG_SDL
5159 case QEMU_OPTION_no_frame:
5160 no_frame = 1;
5161 break;
5162 case QEMU_OPTION_alt_grab:
5163 alt_grab = 1;
5164 break;
5165 case QEMU_OPTION_ctrl_grab:
5166 ctrl_grab = 1;
5167 break;
5168 case QEMU_OPTION_no_quit:
5169 no_quit = 1;
5170 break;
5171 case QEMU_OPTION_sdl:
5172 display_type = DT_SDL;
5173 break;
5174 #endif
5175 case QEMU_OPTION_pidfile:
5176 pid_file = optarg;
5177 break;
5178 #ifdef TARGET_I386
5179 case QEMU_OPTION_win2k_hack:
5180 win2k_install_hack = 1;
5181 break;
5182 case QEMU_OPTION_rtc_td_hack:
5183 rtc_td_hack = 1;
5184 break;
5185 case QEMU_OPTION_acpitable:
5186 if(acpi_table_add(optarg) < 0) {
5187 fprintf(stderr, "Wrong acpi table provided\n");
5188 exit(1);
5189 }
5190 break;
5191 case QEMU_OPTION_smbios:
5192 if(smbios_entry_add(optarg) < 0) {
5193 fprintf(stderr, "Wrong smbios provided\n");
5194 exit(1);
5195 }
5196 break;
5197 #endif
5198 #ifdef CONFIG_KVM
5199 case QEMU_OPTION_enable_kvm:
5200 kvm_allowed = 1;
5201 break;
5202 #endif
5203 case QEMU_OPTION_usb:
5204 usb_enabled = 1;
5205 break;
5206 case QEMU_OPTION_usbdevice:
5207 usb_enabled = 1;
5208 add_device_config(DEV_USB, optarg);
5209 break;
5210 case QEMU_OPTION_device:
5211 if (!qemu_opts_parse(&qemu_device_opts, optarg, "driver")) {
5212 exit(1);
5213 }
5214 break;
5215 case QEMU_OPTION_smp:
5216 smp_parse(optarg);
5217 if (smp_cpus < 1) {
5218 fprintf(stderr, "Invalid number of CPUs\n");
5219 exit(1);
5220 }
5221 if (max_cpus < smp_cpus) {
5222 fprintf(stderr, "maxcpus must be equal to or greater than "
5223 "smp\n");
5224 exit(1);
5225 }
5226 if (max_cpus > 255) {
5227 fprintf(stderr, "Unsupported number of maxcpus\n");
5228 exit(1);
5229 }
5230 break;
5231 case QEMU_OPTION_vnc:
5232 display_type = DT_VNC;
5233 vnc_display = optarg;
5234 break;
5235 #ifdef TARGET_I386
5236 case QEMU_OPTION_no_acpi:
5237 acpi_enabled = 0;
5238 break;
5239 case QEMU_OPTION_no_hpet:
5240 no_hpet = 1;
5241 break;
5242 case QEMU_OPTION_balloon:
5243 if (balloon_parse(optarg) < 0) {
5244 fprintf(stderr, "Unknown -balloon argument %s\n", optarg);
5245 exit(1);
5246 }
5247 break;
5248 #endif
5249 case QEMU_OPTION_no_reboot:
5250 no_reboot = 1;
5251 break;
5252 case QEMU_OPTION_no_shutdown:
5253 no_shutdown = 1;
5254 break;
5255 case QEMU_OPTION_show_cursor:
5256 cursor_hide = 0;
5257 break;
5258 case QEMU_OPTION_uuid:
5259 if(qemu_uuid_parse(optarg, qemu_uuid) < 0) {
5260 fprintf(stderr, "Fail to parse UUID string."
5261 " Wrong format.\n");
5262 exit(1);
5263 }
5264 break;
5265 #ifndef _WIN32
5266 case QEMU_OPTION_daemonize:
5267 daemonize = 1;
5268 break;
5269 #endif
5270 case QEMU_OPTION_option_rom:
5271 if (nb_option_roms >= MAX_OPTION_ROMS) {
5272 fprintf(stderr, "Too many option ROMs\n");
5273 exit(1);
5274 }
5275 option_rom[nb_option_roms] = optarg;
5276 nb_option_roms++;
5277 break;
5278 #if defined(TARGET_ARM) || defined(TARGET_M68K)
5279 case QEMU_OPTION_semihosting:
5280 semihosting_enabled = 1;
5281 break;
5282 #endif
5283 case QEMU_OPTION_name:
5284 qemu_name = qemu_strdup(optarg);
5285 {
5286 char *p = strchr(qemu_name, ',');
5287 if (p != NULL) {
5288 *p++ = 0;
5289 if (strncmp(p, "process=", 8)) {
5290 fprintf(stderr, "Unknown subargument %s to -name", p);
5291 exit(1);
5292 }
5293 p += 8;
5294 set_proc_name(p);
5295 }
5296 }
5297 break;
5298 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
5299 case QEMU_OPTION_prom_env:
5300 if (nb_prom_envs >= MAX_PROM_ENVS) {
5301 fprintf(stderr, "Too many prom variables\n");
5302 exit(1);
5303 }
5304 prom_envs[nb_prom_envs] = optarg;
5305 nb_prom_envs++;
5306 break;
5307 #endif
5308 #ifdef TARGET_ARM
5309 case QEMU_OPTION_old_param:
5310 old_param = 1;
5311 break;
5312 #endif
5313 case QEMU_OPTION_clock:
5314 configure_alarms(optarg);
5315 break;
5316 case QEMU_OPTION_startdate:
5317 configure_rtc_date_offset(optarg, 1);
5318 break;
5319 case QEMU_OPTION_rtc:
5320 opts = qemu_opts_parse(&qemu_rtc_opts, optarg, NULL);
5321 if (!opts) {
5322 fprintf(stderr, "parse error: %s\n", optarg);
5323 exit(1);
5324 }
5325 configure_rtc(opts);
5326 break;
5327 case QEMU_OPTION_tb_size:
5328 tb_size = strtol(optarg, NULL, 0);
5329 if (tb_size < 0)
5330 tb_size = 0;
5331 break;
5332 case QEMU_OPTION_icount:
5333 use_icount = 1;
5334 if (strcmp(optarg, "auto") == 0) {
5335 icount_time_shift = -1;
5336 } else {
5337 icount_time_shift = strtol(optarg, NULL, 0);
5338 }
5339 break;
5340 case QEMU_OPTION_incoming:
5341 incoming = optarg;
5342 break;
5343 #ifndef _WIN32
5344 case QEMU_OPTION_chroot:
5345 chroot_dir = optarg;
5346 break;
5347 case QEMU_OPTION_runas:
5348 run_as = optarg;
5349 break;
5350 #endif
5351 #ifdef CONFIG_XEN
5352 case QEMU_OPTION_xen_domid:
5353 xen_domid = atoi(optarg);
5354 break;
5355 case QEMU_OPTION_xen_create:
5356 xen_mode = XEN_CREATE;
5357 break;
5358 case QEMU_OPTION_xen_attach:
5359 xen_mode = XEN_ATTACH;
5360 break;
5361 #endif
5362 case QEMU_OPTION_readconfig:
5363 {
5364 FILE *fp;
5365 fp = fopen(optarg, "r");
5366 if (fp == NULL) {
5367 fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
5368 exit(1);
5369 }
5370 if (qemu_config_parse(fp) != 0) {
5371 exit(1);
5372 }
5373 fclose(fp);
5374 break;
5375 }
5376 case QEMU_OPTION_writeconfig:
5377 {
5378 FILE *fp;
5379 if (strcmp(optarg, "-") == 0) {
5380 fp = stdout;
5381 } else {
5382 fp = fopen(optarg, "w");
5383 if (fp == NULL) {
5384 fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
5385 exit(1);
5386 }
5387 }
5388 qemu_config_write(fp);
5389 fclose(fp);
5390 break;
5391 }
5392 }
5393 }
5394 }
5395
5396 /* If no data_dir is specified then try to find it relative to the
5397 executable path. */
5398 if (!data_dir) {
5399 data_dir = find_datadir(argv[0]);
5400 }
5401 /* If all else fails use the install patch specified when building. */
5402 if (!data_dir) {
5403 data_dir = CONFIG_QEMU_SHAREDIR;
5404 }
5405
5406 /*
5407 * Default to max_cpus = smp_cpus, in case the user doesn't
5408 * specify a max_cpus value.
5409 */
5410 if (!max_cpus)
5411 max_cpus = smp_cpus;
5412
5413 machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */
5414 if (smp_cpus > machine->max_cpus) {
5415 fprintf(stderr, "Number of SMP cpus requested (%d), exceeds max cpus "
5416 "supported by machine `%s' (%d)\n", smp_cpus, machine->name,
5417 machine->max_cpus);
5418 exit(1);
5419 }
5420
5421 if (display_type == DT_NOGRAPHIC) {
5422 if (serial_device_index == 0)
5423 serial_devices[0] = "stdio";
5424 if (parallel_device_index == 0)
5425 parallel_devices[0] = "null";
5426 if (strncmp(monitor_devices[0], "vc", 2) == 0) {
5427 monitor_devices[0] = "stdio";
5428 }
5429 }
5430
5431 #ifndef _WIN32
5432 if (daemonize) {
5433 pid_t pid;
5434
5435 if (pipe(fds) == -1)
5436 exit(1);
5437
5438 pid = fork();
5439 if (pid > 0) {
5440 uint8_t status;
5441 ssize_t len;
5442
5443 close(fds[1]);
5444
5445 again:
5446 len = read(fds[0], &status, 1);
5447 if (len == -1 && (errno == EINTR))
5448 goto again;
5449
5450 if (len != 1)
5451 exit(1);
5452 else if (status == 1) {
5453 fprintf(stderr, "Could not acquire pidfile: %s\n", strerror(errno));
5454 exit(1);
5455 } else
5456 exit(0);
5457 } else if (pid < 0)
5458 exit(1);
5459
5460 setsid();
5461
5462 pid = fork();
5463 if (pid > 0)
5464 exit(0);
5465 else if (pid < 0)
5466 exit(1);
5467
5468 umask(027);
5469
5470 signal(SIGTSTP, SIG_IGN);
5471 signal(SIGTTOU, SIG_IGN);
5472 signal(SIGTTIN, SIG_IGN);
5473 }
5474
5475 if (pid_file && qemu_create_pidfile(pid_file) != 0) {
5476 if (daemonize) {
5477 uint8_t status = 1;
5478 write(fds[1], &status, 1);
5479 } else
5480 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
5481 exit(1);
5482 }
5483 #endif
5484
5485 if (kvm_enabled()) {
5486 int ret;
5487
5488 ret = kvm_init(smp_cpus);
5489 if (ret < 0) {
5490 fprintf(stderr, "failed to initialize KVM\n");
5491 exit(1);
5492 }
5493 }
5494
5495 if (qemu_init_main_loop()) {
5496 fprintf(stderr, "qemu_init_main_loop failed\n");
5497 exit(1);
5498 }
5499 linux_boot = (kernel_filename != NULL);
5500
5501 if (!linux_boot && *kernel_cmdline != '\0') {
5502 fprintf(stderr, "-append only allowed with -kernel option\n");
5503 exit(1);
5504 }
5505
5506 if (!linux_boot && initrd_filename != NULL) {
5507 fprintf(stderr, "-initrd only allowed with -kernel option\n");
5508 exit(1);
5509 }
5510
5511 #ifndef _WIN32
5512 /* Win32 doesn't support line-buffering and requires size >= 2 */
5513 setvbuf(stdout, NULL, _IOLBF, 0);
5514 #endif
5515
5516 if (init_timer_alarm() < 0) {
5517 fprintf(stderr, "could not initialize alarm timer\n");
5518 exit(1);
5519 }
5520 if (use_icount && icount_time_shift < 0) {
5521 use_icount = 2;
5522 /* 125MIPS seems a reasonable initial guess at the guest speed.
5523 It will be corrected fairly quickly anyway. */
5524 icount_time_shift = 3;
5525 init_icount_adjust();
5526 }
5527
5528 #ifdef _WIN32
5529 socket_init();
5530 #endif
5531
5532 if (net_init_clients() < 0) {
5533 exit(1);
5534 }
5535
5536 net_boot = (boot_devices_bitmap >> ('n' - 'a')) & 0xF;
5537 net_set_boot_mask(net_boot);
5538
5539 /* init the bluetooth world */
5540 if (foreach_device_config(DEV_BT, bt_parse))
5541 exit(1);
5542
5543 /* init the memory */
5544 if (ram_size == 0)
5545 ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
5546
5547 /* init the dynamic translator */
5548 cpu_exec_init_all(tb_size * 1024 * 1024);
5549
5550 bdrv_init_with_whitelist();
5551
5552 blk_mig_init();
5553
5554 /* we always create the cdrom drive, even if no disk is there */
5555 drive_add(NULL, CDROM_ALIAS);
5556
5557 /* we always create at least one floppy */
5558 drive_add(NULL, FD_ALIAS, 0);
5559
5560 /* we always create one sd slot, even if no card is in it */
5561 drive_add(NULL, SD_ALIAS);
5562
5563 /* open the virtual block devices */
5564 if (snapshot)
5565 qemu_opts_foreach(&qemu_drive_opts, drive_enable_snapshot, NULL, 0);
5566 if (qemu_opts_foreach(&qemu_drive_opts, drive_init_func, machine, 1) != 0)
5567 exit(1);
5568
5569 vmstate_register(0, &vmstate_timers ,&timers_state);
5570 register_savevm_live("ram", 0, 3, NULL, ram_save_live, NULL,
5571 ram_load, NULL);
5572
5573 /* Maintain compatibility with multiple stdio monitors */
5574 if (!strcmp(monitor_devices[0],"stdio")) {
5575 for (i = 0; i < MAX_SERIAL_PORTS; i++) {
5576 const char *devname = serial_devices[i];
5577 if (devname && !strcmp(devname,"mon:stdio")) {
5578 monitor_devices[0] = NULL;
5579 break;
5580 } else if (devname && !strcmp(devname,"stdio")) {
5581 monitor_devices[0] = NULL;
5582 serial_devices[i] = "mon:stdio";
5583 break;
5584 }
5585 }
5586 }
5587
5588 if (nb_numa_nodes > 0) {
5589 int i;
5590
5591 if (nb_numa_nodes > smp_cpus) {
5592 nb_numa_nodes = smp_cpus;
5593 }
5594
5595 /* If no memory size if given for any node, assume the default case
5596 * and distribute the available memory equally across all nodes
5597 */
5598 for (i = 0; i < nb_numa_nodes; i++) {
5599 if (node_mem[i] != 0)
5600 break;
5601 }
5602 if (i == nb_numa_nodes) {
5603 uint64_t usedmem = 0;
5604
5605 /* On Linux, the each node's border has to be 8MB aligned,
5606 * the final node gets the rest.
5607 */
5608 for (i = 0; i < nb_numa_nodes - 1; i++) {
5609 node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
5610 usedmem += node_mem[i];
5611 }
5612 node_mem[i] = ram_size - usedmem;
5613 }
5614
5615 for (i = 0; i < nb_numa_nodes; i++) {
5616 if (node_cpumask[i] != 0)
5617 break;
5618 }
5619 /* assigning the VCPUs round-robin is easier to implement, guest OSes
5620 * must cope with this anyway, because there are BIOSes out there in
5621 * real machines which also use this scheme.
5622 */
5623 if (i == nb_numa_nodes) {
5624 for (i = 0; i < smp_cpus; i++) {
5625 node_cpumask[i % nb_numa_nodes] |= 1 << i;
5626 }
5627 }
5628 }
5629
5630 for (i = 0; i < MAX_MONITOR_DEVICES; i++) {
5631 const char *devname = monitor_devices[i];
5632 if (devname && strcmp(devname, "none")) {
5633 char label[32];
5634 if (i == 0) {
5635 snprintf(label, sizeof(label), "monitor");
5636 } else {
5637 snprintf(label, sizeof(label), "monitor%d", i);
5638 }
5639 monitor_hds[i] = qemu_chr_open(label, devname, NULL);
5640 if (!monitor_hds[i]) {
5641 fprintf(stderr, "qemu: could not open monitor device '%s'\n",
5642 devname);
5643 exit(1);
5644 }
5645 }
5646 }
5647
5648 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
5649 const char *devname = serial_devices[i];
5650 if (devname && strcmp(devname, "none")) {
5651 char label[32];
5652 snprintf(label, sizeof(label), "serial%d", i);
5653 serial_hds[i] = qemu_chr_open(label, devname, NULL);
5654 if (!serial_hds[i]) {
5655 fprintf(stderr, "qemu: could not open serial device '%s': %s\n",
5656 devname, strerror(errno));
5657 exit(1);
5658 }
5659 }
5660 }
5661
5662 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
5663 const char *devname = parallel_devices[i];
5664 if (devname && strcmp(devname, "none")) {
5665 char label[32];
5666 snprintf(label, sizeof(label), "parallel%d", i);
5667 parallel_hds[i] = qemu_chr_open(label, devname, NULL);
5668 if (!parallel_hds[i]) {
5669 fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
5670 devname, strerror(errno));
5671 exit(1);
5672 }
5673 }
5674 }
5675
5676 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
5677 const char *devname = virtio_consoles[i];
5678 if (devname && strcmp(devname, "none")) {
5679 char label[32];
5680 snprintf(label, sizeof(label), "virtcon%d", i);
5681 virtcon_hds[i] = qemu_chr_open(label, devname, NULL);
5682 if (!virtcon_hds[i]) {
5683 fprintf(stderr, "qemu: could not open virtio console '%s': %s\n",
5684 devname, strerror(errno));
5685 exit(1);
5686 }
5687 }
5688 }
5689
5690 module_call_init(MODULE_INIT_DEVICE);
5691
5692 if (watchdog) {
5693 i = select_watchdog(watchdog);
5694 if (i > 0)
5695 exit (i == 1 ? 1 : 0);
5696 }
5697
5698 if (machine->compat_props) {
5699 qdev_prop_register_compat(machine->compat_props);
5700 }
5701 machine->init(ram_size, boot_devices,
5702 kernel_filename, kernel_cmdline, initrd_filename, cpu_model);
5703
5704
5705 #ifndef _WIN32
5706 /* must be after terminal init, SDL library changes signal handlers */
5707 sighandler_setup();
5708 #endif
5709
5710 for (env = first_cpu; env != NULL; env = env->next_cpu) {
5711 for (i = 0; i < nb_numa_nodes; i++) {
5712 if (node_cpumask[i] & (1 << env->cpu_index)) {
5713 env->numa_node = i;
5714 }
5715 }
5716 }
5717
5718 current_machine = machine;
5719
5720 /* init USB devices */
5721 if (usb_enabled) {
5722 if (foreach_device_config(DEV_USB, usb_parse) < 0)
5723 exit(1);
5724 }
5725
5726 /* init generic devices */
5727 if (qemu_opts_foreach(&qemu_device_opts, device_init_func, NULL, 1) != 0)
5728 exit(1);
5729
5730 if (!display_state)
5731 dumb_display_init();
5732 /* just use the first displaystate for the moment */
5733 ds = display_state;
5734
5735 if (display_type == DT_DEFAULT) {
5736 #if defined(CONFIG_SDL) || defined(CONFIG_COCOA)
5737 display_type = DT_SDL;
5738 #else
5739 display_type = DT_VNC;
5740 vnc_display = "localhost:0,to=99";
5741 show_vnc_port = 1;
5742 #endif
5743 }
5744
5745
5746 switch (display_type) {
5747 case DT_NOGRAPHIC:
5748 break;
5749 #if defined(CONFIG_CURSES)
5750 case DT_CURSES:
5751 curses_display_init(ds, full_screen);
5752 break;
5753 #endif
5754 #if defined(CONFIG_SDL)
5755 case DT_SDL:
5756 sdl_display_init(ds, full_screen, no_frame);
5757 break;
5758 #elif defined(CONFIG_COCOA)
5759 case DT_SDL:
5760 cocoa_display_init(ds, full_screen);
5761 break;
5762 #endif
5763 case DT_VNC:
5764 vnc_display_init(ds);
5765 if (vnc_display_open(ds, vnc_display) < 0)
5766 exit(1);
5767
5768 if (show_vnc_port) {
5769 printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));
5770 }
5771 break;
5772 default:
5773 break;
5774 }
5775 dpy_resize(ds);
5776
5777 dcl = ds->listeners;
5778 while (dcl != NULL) {
5779 if (dcl->dpy_refresh != NULL) {
5780 ds->gui_timer = qemu_new_timer(rt_clock, gui_update, ds);
5781 qemu_mod_timer(ds->gui_timer, qemu_get_clock(rt_clock));
5782 }
5783 dcl = dcl->next;
5784 }
5785
5786 if (display_type == DT_NOGRAPHIC || display_type == DT_VNC) {
5787 nographic_timer = qemu_new_timer(rt_clock, nographic_update, NULL);
5788 qemu_mod_timer(nographic_timer, qemu_get_clock(rt_clock));
5789 }
5790
5791 text_consoles_set_display(display_state);
5792
5793 for (i = 0; i < MAX_MONITOR_DEVICES; i++) {
5794 if (monitor_devices[i] && monitor_hds[i]) {
5795 monitor_init(monitor_hds[i],
5796 MONITOR_USE_READLINE |
5797 ((i == 0) ? MONITOR_IS_DEFAULT : 0));
5798 }
5799 }
5800
5801 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
5802 const char *devname = serial_devices[i];
5803 if (devname && strcmp(devname, "none")) {
5804 if (strstart(devname, "vc", 0))
5805 qemu_chr_printf(serial_hds[i], "serial%d console\r\n", i);
5806 }
5807 }
5808
5809 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
5810 const char *devname = parallel_devices[i];
5811 if (devname && strcmp(devname, "none")) {
5812 if (strstart(devname, "vc", 0))
5813 qemu_chr_printf(parallel_hds[i], "parallel%d console\r\n", i);
5814 }
5815 }
5816
5817 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
5818 const char *devname = virtio_consoles[i];
5819 if (virtcon_hds[i] && devname) {
5820 if (strstart(devname, "vc", 0))
5821 qemu_chr_printf(virtcon_hds[i], "virtio console%d\r\n", i);
5822 }
5823 }
5824
5825 if (gdbstub_dev && gdbserver_start(gdbstub_dev) < 0) {
5826 fprintf(stderr, "qemu: could not open gdbserver on device '%s'\n",
5827 gdbstub_dev);
5828 exit(1);
5829 }
5830
5831 qdev_machine_creation_done();
5832
5833 rom_load_all();
5834
5835 qemu_system_reset();
5836 if (loadvm) {
5837 if (load_vmstate(cur_mon, loadvm) < 0) {
5838 autostart = 0;
5839 }
5840 }
5841
5842 if (incoming) {
5843 qemu_start_incoming_migration(incoming);
5844 } else if (autostart) {
5845 vm_start();
5846 }
5847
5848 #ifndef _WIN32
5849 if (daemonize) {
5850 uint8_t status = 0;
5851 ssize_t len;
5852
5853 again1:
5854 len = write(fds[1], &status, 1);
5855 if (len == -1 && (errno == EINTR))
5856 goto again1;
5857
5858 if (len != 1)
5859 exit(1);
5860
5861 chdir("/");
5862 TFR(fd = open("/dev/null", O_RDWR));
5863 if (fd == -1)
5864 exit(1);
5865 }
5866
5867 if (run_as) {
5868 pwd = getpwnam(run_as);
5869 if (!pwd) {
5870 fprintf(stderr, "User \"%s\" doesn't exist\n", run_as);
5871 exit(1);
5872 }
5873 }
5874
5875 if (chroot_dir) {
5876 if (chroot(chroot_dir) < 0) {
5877 fprintf(stderr, "chroot failed\n");
5878 exit(1);
5879 }
5880 chdir("/");
5881 }
5882
5883 if (run_as) {
5884 if (setgid(pwd->pw_gid) < 0) {
5885 fprintf(stderr, "Failed to setgid(%d)\n", pwd->pw_gid);
5886 exit(1);
5887 }
5888 if (setuid(pwd->pw_uid) < 0) {
5889 fprintf(stderr, "Failed to setuid(%d)\n", pwd->pw_uid);
5890 exit(1);
5891 }
5892 if (setuid(0) != -1) {
5893 fprintf(stderr, "Dropping privileges failed\n");
5894 exit(1);
5895 }
5896 }
5897
5898 if (daemonize) {
5899 dup2(fd, 0);
5900 dup2(fd, 1);
5901 dup2(fd, 2);
5902
5903 close(fd);
5904 }
5905 #endif
5906
5907 main_loop();
5908 quit_timers();
5909 net_cleanup();
5910
5911 return 0;
5912 }
Anthony Liguori's QEMU queue