4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
32 /* Needed early for CONFIG_BSD etc. */
33 #include "config-host.h"
38 #include <sys/times.h>
42 #include <sys/ioctl.h>
43 #include <sys/resource.h>
44 #include <sys/socket.h>
45 #include <netinet/in.h>
47 #include <arpa/inet.h>
50 #include <sys/select.h>
53 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
62 #include <linux/rtc.h>
63 #include <sys/prctl.h>
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> */
70 #include <linux/ppdev.h>
71 #include <linux/parport.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>
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);
94 #if defined(__OpenBSD__)
98 #if defined(CONFIG_VDE)
99 #include <libvdeplug.h>
104 #include <mmsystem.h>
108 #if defined(__APPLE__) || defined(main)
110 int qemu_main(int argc, char **argv, char **envp);
111 int main(int argc, char **argv)
113 return qemu_main(argc, argv, NULL);
116 #define main qemu_main
118 #endif /* CONFIG_SDL */
122 #define main qemu_main
123 #endif /* CONFIG_COCOA */
126 #include "hw/boards.h"
128 #include "hw/pcmcia.h"
130 #include "hw/audiodev.h"
134 #include "hw/watchdog.h"
135 #include "hw/smbios.h"
138 #include "hw/loader.h"
141 #include "net/slirp.h"
146 #include "qemu-timer.h"
147 #include "qemu-char.h"
148 #include "cache-utils.h"
150 #include "block_int.h"
151 #include "block-migration.h"
153 #include "audio/audio.h"
154 #include "migration.h"
157 #include "qemu-option.h"
158 #include "qemu-config.h"
159 #include "qemu-objects.h"
163 #include "exec-all.h"
165 #include "qemu_socket.h"
167 #include "slirp/libslirp.h"
169 #include "qemu-queue.h"
172 //#define DEBUG_SLIRP
174 #define DEFAULT_RAM_SIZE 128
176 #define MAX_VIRTIO_CONSOLES 1
178 static const char *data_dir;
179 const char *bios_name = NULL;
180 /* Note: drives_table[MAX_DRIVES] is a dummy block driver if none available
181 to store the VM snapshots */
182 struct drivelist drives = QTAILQ_HEAD_INITIALIZER(drives);
183 struct driveoptlist driveopts = QTAILQ_HEAD_INITIALIZER(driveopts);
184 enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
185 DisplayType display_type = DT_DEFAULT;
186 const char* keyboard_layout = NULL;
188 const char *mem_path = NULL;
190 int mem_prealloc = 0; /* force preallocation of physical target memory */
193 NICInfo nd_table[MAX_NICS];
196 static int rtc_utc = 1;
197 static int rtc_date_offset = -1; /* -1 means no change */
198 QEMUClock *rtc_clock;
199 int vga_interface_type = VGA_NONE;
201 int graphic_width = 1024;
202 int graphic_height = 768;
203 int graphic_depth = 8;
205 int graphic_width = 800;
206 int graphic_height = 600;
207 int graphic_depth = 15;
209 static int full_screen = 0;
211 static int no_frame = 0;
214 CharDriverState *serial_hds[MAX_SERIAL_PORTS];
215 CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
216 CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
218 int win2k_install_hack = 0;
227 const char *vnc_display;
228 int acpi_enabled = 1;
234 int graphic_rotate = 0;
235 uint8_t irq0override = 1;
239 const char *watchdog;
240 const char *option_rom[MAX_OPTION_ROMS];
242 int semihosting_enabled = 0;
246 const char *qemu_name;
249 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
250 unsigned int nb_prom_envs = 0;
251 const char *prom_envs[MAX_PROM_ENVS];
256 uint64_t node_mem[MAX_NODES];
257 uint64_t node_cpumask[MAX_NODES];
259 static CPUState *cur_cpu;
260 static CPUState *next_cpu;
261 /* Conversion factor from emulated instructions to virtual clock ticks. */
262 static int icount_time_shift;
263 /* Arbitrarily pick 1MIPS as the minimum allowable speed. */
264 #define MAX_ICOUNT_SHIFT 10
265 /* Compensate for varying guest execution speed. */
266 static int64_t qemu_icount_bias;
267 static QEMUTimer *icount_rt_timer;
268 static QEMUTimer *icount_vm_timer;
269 static QEMUTimer *nographic_timer;
271 uint8_t qemu_uuid[16];
273 static QEMUBootSetHandler *boot_set_handler;
274 static void *boot_set_opaque;
277 #define SIG_IPI (SIGRTMIN+4)
279 #define SIG_IPI SIGUSR1
282 static int default_serial = 1;
283 static int default_parallel = 1;
284 static int default_virtcon = 1;
285 static int default_monitor = 1;
286 static int default_vga = 1;
287 static int default_floppy = 1;
288 static int default_cdrom = 1;
289 static int default_sdcard = 1;
295 { .driver = "isa-serial", .flag = &default_serial },
296 { .driver = "isa-parallel", .flag = &default_parallel },
297 { .driver = "isa-fdc", .flag = &default_floppy },
298 { .driver = "ide-drive", .flag = &default_cdrom },
299 { .driver = "virtio-serial-pci", .flag = &default_virtcon },
300 { .driver = "virtio-serial-s390", .flag = &default_virtcon },
301 { .driver = "virtio-serial", .flag = &default_virtcon },
302 { .driver = "VGA", .flag = &default_vga },
303 { .driver = "cirrus-vga", .flag = &default_vga },
304 { .driver = "vmware-svga", .flag = &default_vga },
307 static int default_driver_check(QemuOpts *opts, void *opaque)
309 const char *driver = qemu_opt_get(opts, "driver");
314 for (i = 0; i < ARRAY_SIZE(default_list); i++) {
315 if (strcmp(default_list[i].driver, driver) != 0)
317 *(default_list[i].flag) = 0;
322 /***********************************************************/
323 /* x86 ISA bus support */
325 target_phys_addr_t isa_mem_base = 0;
328 /***********************************************************/
329 void hw_error(const char *fmt, ...)
335 fprintf(stderr, "qemu: hardware error: ");
336 vfprintf(stderr, fmt, ap);
337 fprintf(stderr, "\n");
338 for(env = first_cpu; env != NULL; env = env->next_cpu) {
339 fprintf(stderr, "CPU #%d:\n", env->cpu_index);
341 cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU);
343 cpu_dump_state(env, stderr, fprintf, 0);
350 static void set_proc_name(const char *s)
352 #if defined(__linux__) && defined(PR_SET_NAME)
356 name[sizeof(name) - 1] = 0;
357 strncpy(name, s, sizeof(name));
358 /* Could rewrite argv[0] too, but that's a bit more complicated.
359 This simple way is enough for `top'. */
360 prctl(PR_SET_NAME, name);
367 static QEMUBalloonEvent *qemu_balloon_event;
368 void *qemu_balloon_event_opaque;
370 void qemu_add_balloon_handler(QEMUBalloonEvent *func, void *opaque)
372 qemu_balloon_event = func;
373 qemu_balloon_event_opaque = opaque;
376 int qemu_balloon(ram_addr_t target, MonitorCompletion cb, void *opaque)
378 if (qemu_balloon_event) {
379 qemu_balloon_event(qemu_balloon_event_opaque, target, cb, opaque);
386 int qemu_balloon_status(MonitorCompletion cb, void *opaque)
388 if (qemu_balloon_event) {
389 qemu_balloon_event(qemu_balloon_event_opaque, 0, cb, opaque);
397 /***********************************************************/
398 /* real time host monotonic timer */
400 /* compute with 96 bit intermediate result: (a*b)/c */
401 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
406 #ifdef HOST_WORDS_BIGENDIAN
416 rl = (uint64_t)u.l.low * (uint64_t)b;
417 rh = (uint64_t)u.l.high * (uint64_t)b;
420 res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
424 static int64_t get_clock_realtime(void)
428 gettimeofday(&tv, NULL);
429 return tv.tv_sec * 1000000000LL + (tv.tv_usec * 1000);
434 static int64_t clock_freq;
436 static void init_get_clock(void)
440 ret = QueryPerformanceFrequency(&freq);
442 fprintf(stderr, "Could not calibrate ticks\n");
445 clock_freq = freq.QuadPart;
448 static int64_t get_clock(void)
451 QueryPerformanceCounter(&ti);
452 return muldiv64(ti.QuadPart, get_ticks_per_sec(), clock_freq);
457 static int use_rt_clock;
459 static void init_get_clock(void)
462 #if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD_version >= 500000) \
463 || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
466 if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) {
473 static int64_t get_clock(void)
475 #if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD_version >= 500000) \
476 || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
479 clock_gettime(CLOCK_MONOTONIC, &ts);
480 return ts.tv_sec * 1000000000LL + ts.tv_nsec;
484 /* XXX: using gettimeofday leads to problems if the date
485 changes, so it should be avoided. */
486 return get_clock_realtime();
491 /* Return the virtual CPU time, based on the instruction counter. */
492 static int64_t cpu_get_icount(void)
495 CPUState *env = cpu_single_env;;
496 icount = qemu_icount;
499 fprintf(stderr, "Bad clock read\n");
500 icount -= (env->icount_decr.u16.low + env->icount_extra);
502 return qemu_icount_bias + (icount << icount_time_shift);
505 /***********************************************************/
506 /* guest cycle counter */
508 typedef struct TimersState {
509 int64_t cpu_ticks_prev;
510 int64_t cpu_ticks_offset;
511 int64_t cpu_clock_offset;
512 int32_t cpu_ticks_enabled;
516 TimersState timers_state;
518 /* return the host CPU cycle counter and handle stop/restart */
519 int64_t cpu_get_ticks(void)
522 return cpu_get_icount();
524 if (!timers_state.cpu_ticks_enabled) {
525 return timers_state.cpu_ticks_offset;
528 ticks = cpu_get_real_ticks();
529 if (timers_state.cpu_ticks_prev > ticks) {
530 /* Note: non increasing ticks may happen if the host uses
532 timers_state.cpu_ticks_offset += timers_state.cpu_ticks_prev - ticks;
534 timers_state.cpu_ticks_prev = ticks;
535 return ticks + timers_state.cpu_ticks_offset;
539 /* return the host CPU monotonic timer and handle stop/restart */
540 static int64_t cpu_get_clock(void)
543 if (!timers_state.cpu_ticks_enabled) {
544 return timers_state.cpu_clock_offset;
547 return ti + timers_state.cpu_clock_offset;
551 /* enable cpu_get_ticks() */
552 void cpu_enable_ticks(void)
554 if (!timers_state.cpu_ticks_enabled) {
555 timers_state.cpu_ticks_offset -= cpu_get_real_ticks();
556 timers_state.cpu_clock_offset -= get_clock();
557 timers_state.cpu_ticks_enabled = 1;
561 /* disable cpu_get_ticks() : the clock is stopped. You must not call
562 cpu_get_ticks() after that. */
563 void cpu_disable_ticks(void)
565 if (timers_state.cpu_ticks_enabled) {
566 timers_state.cpu_ticks_offset = cpu_get_ticks();
567 timers_state.cpu_clock_offset = cpu_get_clock();
568 timers_state.cpu_ticks_enabled = 0;
572 /***********************************************************/
575 #define QEMU_CLOCK_REALTIME 0
576 #define QEMU_CLOCK_VIRTUAL 1
577 #define QEMU_CLOCK_HOST 2
581 /* XXX: add frequency */
589 struct QEMUTimer *next;
592 struct qemu_alarm_timer {
594 int (*start)(struct qemu_alarm_timer *t);
595 void (*stop)(struct qemu_alarm_timer *t);
596 void (*rearm)(struct qemu_alarm_timer *t);
603 static inline int alarm_has_dynticks(struct qemu_alarm_timer *t)
608 static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t)
610 if (!alarm_has_dynticks(t))
616 /* TODO: MIN_TIMER_REARM_US should be optimized */
617 #define MIN_TIMER_REARM_US 250
619 static struct qemu_alarm_timer *alarm_timer;
623 struct qemu_alarm_win32 {
626 } alarm_win32_data = {0, 0};
628 static int win32_start_timer(struct qemu_alarm_timer *t);
629 static void win32_stop_timer(struct qemu_alarm_timer *t);
630 static void win32_rearm_timer(struct qemu_alarm_timer *t);
634 static int unix_start_timer(struct qemu_alarm_timer *t);
635 static void unix_stop_timer(struct qemu_alarm_timer *t);
639 static int dynticks_start_timer(struct qemu_alarm_timer *t);
640 static void dynticks_stop_timer(struct qemu_alarm_timer *t);
641 static void dynticks_rearm_timer(struct qemu_alarm_timer *t);
643 static int hpet_start_timer(struct qemu_alarm_timer *t);
644 static void hpet_stop_timer(struct qemu_alarm_timer *t);
646 static int rtc_start_timer(struct qemu_alarm_timer *t);
647 static void rtc_stop_timer(struct qemu_alarm_timer *t);
649 #endif /* __linux__ */
653 /* Correlation between real and virtual time is always going to be
654 fairly approximate, so ignore small variation.
655 When the guest is idle real and virtual time will be aligned in
657 #define ICOUNT_WOBBLE (get_ticks_per_sec() / 10)
659 static void icount_adjust(void)
664 static int64_t last_delta;
665 /* If the VM is not running, then do nothing. */
669 cur_time = cpu_get_clock();
670 cur_icount = qemu_get_clock(vm_clock);
671 delta = cur_icount - cur_time;
672 /* FIXME: This is a very crude algorithm, somewhat prone to oscillation. */
674 && last_delta + ICOUNT_WOBBLE < delta * 2
675 && icount_time_shift > 0) {
676 /* The guest is getting too far ahead. Slow time down. */
680 && last_delta - ICOUNT_WOBBLE > delta * 2
681 && icount_time_shift < MAX_ICOUNT_SHIFT) {
682 /* The guest is getting too far behind. Speed time up. */
686 qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift);
689 static void icount_adjust_rt(void * opaque)
691 qemu_mod_timer(icount_rt_timer,
692 qemu_get_clock(rt_clock) + 1000);
696 static void icount_adjust_vm(void * opaque)
698 qemu_mod_timer(icount_vm_timer,
699 qemu_get_clock(vm_clock) + get_ticks_per_sec() / 10);
703 static void init_icount_adjust(void)
705 /* Have both realtime and virtual time triggers for speed adjustment.
706 The realtime trigger catches emulated time passing too slowly,
707 the virtual time trigger catches emulated time passing too fast.
708 Realtime triggers occur even when idle, so use them less frequently
710 icount_rt_timer = qemu_new_timer(rt_clock, icount_adjust_rt, NULL);
711 qemu_mod_timer(icount_rt_timer,
712 qemu_get_clock(rt_clock) + 1000);
713 icount_vm_timer = qemu_new_timer(vm_clock, icount_adjust_vm, NULL);
714 qemu_mod_timer(icount_vm_timer,
715 qemu_get_clock(vm_clock) + get_ticks_per_sec() / 10);
718 static struct qemu_alarm_timer alarm_timers[] = {
721 {"dynticks", dynticks_start_timer,
722 dynticks_stop_timer, dynticks_rearm_timer, NULL},
723 /* HPET - if available - is preferred */
724 {"hpet", hpet_start_timer, hpet_stop_timer, NULL, NULL},
725 /* ...otherwise try RTC */
726 {"rtc", rtc_start_timer, rtc_stop_timer, NULL, NULL},
728 {"unix", unix_start_timer, unix_stop_timer, NULL, NULL},
730 {"dynticks", win32_start_timer,
731 win32_stop_timer, win32_rearm_timer, &alarm_win32_data},
732 {"win32", win32_start_timer,
733 win32_stop_timer, NULL, &alarm_win32_data},
738 static void show_available_alarms(void)
742 printf("Available alarm timers, in order of precedence:\n");
743 for (i = 0; alarm_timers[i].name; i++)
744 printf("%s\n", alarm_timers[i].name);
747 static void configure_alarms(char const *opt)
751 int count = ARRAY_SIZE(alarm_timers) - 1;
754 struct qemu_alarm_timer tmp;
756 if (!strcmp(opt, "?")) {
757 show_available_alarms();
761 arg = qemu_strdup(opt);
763 /* Reorder the array */
764 name = strtok(arg, ",");
766 for (i = 0; i < count && alarm_timers[i].name; i++) {
767 if (!strcmp(alarm_timers[i].name, name))
772 fprintf(stderr, "Unknown clock %s\n", name);
781 tmp = alarm_timers[i];
782 alarm_timers[i] = alarm_timers[cur];
783 alarm_timers[cur] = tmp;
787 name = strtok(NULL, ",");
793 /* Disable remaining timers */
794 for (i = cur; i < count; i++)
795 alarm_timers[i].name = NULL;
797 show_available_alarms();
802 #define QEMU_NUM_CLOCKS 3
806 QEMUClock *host_clock;
808 static QEMUTimer *active_timers[QEMU_NUM_CLOCKS];
810 static QEMUClock *qemu_new_clock(int type)
813 clock = qemu_mallocz(sizeof(QEMUClock));
818 QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
822 ts = qemu_mallocz(sizeof(QEMUTimer));
829 void qemu_free_timer(QEMUTimer *ts)
834 /* stop a timer, but do not dealloc it */
835 void qemu_del_timer(QEMUTimer *ts)
839 /* NOTE: this code must be signal safe because
840 qemu_timer_expired() can be called from a signal. */
841 pt = &active_timers[ts->clock->type];
854 /* modify the current timer so that it will be fired when current_time
855 >= expire_time. The corresponding callback will be called. */
856 void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
862 /* add the timer in the sorted list */
863 /* NOTE: this code must be signal safe because
864 qemu_timer_expired() can be called from a signal. */
865 pt = &active_timers[ts->clock->type];
870 if (t->expire_time > expire_time)
874 ts->expire_time = expire_time;
878 /* Rearm if necessary */
879 if (pt == &active_timers[ts->clock->type]) {
880 if (!alarm_timer->pending) {
881 qemu_rearm_alarm_timer(alarm_timer);
883 /* Interrupt execution to force deadline recalculation. */
889 int qemu_timer_pending(QEMUTimer *ts)
892 for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
899 int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
903 return (timer_head->expire_time <= current_time);
906 static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
912 if (!ts || ts->expire_time > current_time)
914 /* remove timer from the list before calling the callback */
915 *ptimer_head = ts->next;
918 /* run the callback (the timer list can be modified) */
923 int64_t qemu_get_clock(QEMUClock *clock)
925 switch(clock->type) {
926 case QEMU_CLOCK_REALTIME:
927 return get_clock() / 1000000;
929 case QEMU_CLOCK_VIRTUAL:
931 return cpu_get_icount();
933 return cpu_get_clock();
935 case QEMU_CLOCK_HOST:
936 return get_clock_realtime();
940 int64_t qemu_get_clock_ns(QEMUClock *clock)
942 switch(clock->type) {
943 case QEMU_CLOCK_REALTIME:
946 case QEMU_CLOCK_VIRTUAL:
948 return cpu_get_icount();
950 return cpu_get_clock();
952 case QEMU_CLOCK_HOST:
953 return get_clock_realtime();
957 static void init_clocks(void)
960 rt_clock = qemu_new_clock(QEMU_CLOCK_REALTIME);
961 vm_clock = qemu_new_clock(QEMU_CLOCK_VIRTUAL);
962 host_clock = qemu_new_clock(QEMU_CLOCK_HOST);
964 rtc_clock = host_clock;
968 void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
970 uint64_t expire_time;
972 if (qemu_timer_pending(ts)) {
973 expire_time = ts->expire_time;
977 qemu_put_be64(f, expire_time);
980 void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
982 uint64_t expire_time;
984 expire_time = qemu_get_be64(f);
985 if (expire_time != -1) {
986 qemu_mod_timer(ts, expire_time);
992 static const VMStateDescription vmstate_timers = {
995 .minimum_version_id = 1,
996 .minimum_version_id_old = 1,
997 .fields = (VMStateField []) {
998 VMSTATE_INT64(cpu_ticks_offset, TimersState),
999 VMSTATE_INT64(dummy, TimersState),
1000 VMSTATE_INT64_V(cpu_clock_offset, TimersState, 2),
1001 VMSTATE_END_OF_LIST()
1005 static void qemu_event_increment(void);
1008 static void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg,
1009 DWORD_PTR dwUser, DWORD_PTR dw1,
1012 static void host_alarm_handler(int host_signum)
1015 struct qemu_alarm_timer *t = alarm_timer;
1020 #define DISP_FREQ 1000
1022 static int64_t delta_min = INT64_MAX;
1023 static int64_t delta_max, delta_cum, last_clock, delta, ti;
1025 ti = qemu_get_clock(vm_clock);
1026 if (last_clock != 0) {
1027 delta = ti - last_clock;
1028 if (delta < delta_min)
1030 if (delta > delta_max)
1033 if (++count == DISP_FREQ) {
1034 printf("timer: min=%" PRId64 " us max=%" PRId64 " us avg=%" PRId64 " us avg_freq=%0.3f Hz\n",
1035 muldiv64(delta_min, 1000000, get_ticks_per_sec()),
1036 muldiv64(delta_max, 1000000, get_ticks_per_sec()),
1037 muldiv64(delta_cum, 1000000 / DISP_FREQ, get_ticks_per_sec()),
1038 (double)get_ticks_per_sec() / ((double)delta_cum / DISP_FREQ));
1040 delta_min = INT64_MAX;
1048 if (alarm_has_dynticks(t) ||
1050 qemu_timer_expired(active_timers[QEMU_CLOCK_VIRTUAL],
1051 qemu_get_clock(vm_clock))) ||
1052 qemu_timer_expired(active_timers[QEMU_CLOCK_REALTIME],
1053 qemu_get_clock(rt_clock)) ||
1054 qemu_timer_expired(active_timers[QEMU_CLOCK_HOST],
1055 qemu_get_clock(host_clock))) {
1057 t->expired = alarm_has_dynticks(t);
1059 qemu_notify_event();
1063 static int64_t qemu_next_deadline(void)
1065 /* To avoid problems with overflow limit this to 2^32. */
1066 int64_t delta = INT32_MAX;
1068 if (active_timers[QEMU_CLOCK_VIRTUAL]) {
1069 delta = active_timers[QEMU_CLOCK_VIRTUAL]->expire_time -
1070 qemu_get_clock(vm_clock);
1072 if (active_timers[QEMU_CLOCK_HOST]) {
1073 int64_t hdelta = active_timers[QEMU_CLOCK_HOST]->expire_time -
1074 qemu_get_clock(host_clock);
1085 #if defined(__linux__)
1086 static uint64_t qemu_next_deadline_dyntick(void)
1094 delta = (qemu_next_deadline() + 999) / 1000;
1096 if (active_timers[QEMU_CLOCK_REALTIME]) {
1097 rtdelta = (active_timers[QEMU_CLOCK_REALTIME]->expire_time -
1098 qemu_get_clock(rt_clock))*1000;
1099 if (rtdelta < delta)
1103 if (delta < MIN_TIMER_REARM_US)
1104 delta = MIN_TIMER_REARM_US;
1112 /* Sets a specific flag */
1113 static int fcntl_setfl(int fd, int flag)
1117 flags = fcntl(fd, F_GETFL);
1121 if (fcntl(fd, F_SETFL, flags | flag) == -1)
1127 #if defined(__linux__)
1129 #define RTC_FREQ 1024
1131 static void enable_sigio_timer(int fd)
1133 struct sigaction act;
1136 sigfillset(&act.sa_mask);
1138 act.sa_handler = host_alarm_handler;
1140 sigaction(SIGIO, &act, NULL);
1141 fcntl_setfl(fd, O_ASYNC);
1142 fcntl(fd, F_SETOWN, getpid());
1145 static int hpet_start_timer(struct qemu_alarm_timer *t)
1147 struct hpet_info info;
1150 fd = qemu_open("/dev/hpet", O_RDONLY);
1155 r = ioctl(fd, HPET_IRQFREQ, RTC_FREQ);
1157 fprintf(stderr, "Could not configure '/dev/hpet' to have a 1024Hz timer. This is not a fatal\n"
1158 "error, but for better emulation accuracy type:\n"
1159 "'echo 1024 > /proc/sys/dev/hpet/max-user-freq' as root.\n");
1163 /* Check capabilities */
1164 r = ioctl(fd, HPET_INFO, &info);
1168 /* Enable periodic mode */
1169 r = ioctl(fd, HPET_EPI, 0);
1170 if (info.hi_flags && (r < 0))
1173 /* Enable interrupt */
1174 r = ioctl(fd, HPET_IE_ON, 0);
1178 enable_sigio_timer(fd);
1179 t->priv = (void *)(long)fd;
1187 static void hpet_stop_timer(struct qemu_alarm_timer *t)
1189 int fd = (long)t->priv;
1194 static int rtc_start_timer(struct qemu_alarm_timer *t)
1197 unsigned long current_rtc_freq = 0;
1199 TFR(rtc_fd = qemu_open("/dev/rtc", O_RDONLY));
1202 ioctl(rtc_fd, RTC_IRQP_READ, ¤t_rtc_freq);
1203 if (current_rtc_freq != RTC_FREQ &&
1204 ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
1205 fprintf(stderr, "Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal\n"
1206 "error, but for better emulation accuracy either use a 2.6 host Linux kernel or\n"
1207 "type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.\n");
1210 if (ioctl(rtc_fd, RTC_PIE_ON, 0) < 0) {
1216 enable_sigio_timer(rtc_fd);
1218 t->priv = (void *)(long)rtc_fd;
1223 static void rtc_stop_timer(struct qemu_alarm_timer *t)
1225 int rtc_fd = (long)t->priv;
1230 static int dynticks_start_timer(struct qemu_alarm_timer *t)
1234 struct sigaction act;
1236 sigfillset(&act.sa_mask);
1238 act.sa_handler = host_alarm_handler;
1240 sigaction(SIGALRM, &act, NULL);
1243 * Initialize ev struct to 0 to avoid valgrind complaining
1244 * about uninitialized data in timer_create call
1246 memset(&ev, 0, sizeof(ev));
1247 ev.sigev_value.sival_int = 0;
1248 ev.sigev_notify = SIGEV_SIGNAL;
1249 ev.sigev_signo = SIGALRM;
1251 if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {
1252 perror("timer_create");
1254 /* disable dynticks */
1255 fprintf(stderr, "Dynamic Ticks disabled\n");
1260 t->priv = (void *)(long)host_timer;
1265 static void dynticks_stop_timer(struct qemu_alarm_timer *t)
1267 timer_t host_timer = (timer_t)(long)t->priv;
1269 timer_delete(host_timer);
1272 static void dynticks_rearm_timer(struct qemu_alarm_timer *t)
1274 timer_t host_timer = (timer_t)(long)t->priv;
1275 struct itimerspec timeout;
1276 int64_t nearest_delta_us = INT64_MAX;
1279 assert(alarm_has_dynticks(t));
1280 if (!active_timers[QEMU_CLOCK_REALTIME] &&
1281 !active_timers[QEMU_CLOCK_VIRTUAL] &&
1282 !active_timers[QEMU_CLOCK_HOST])
1285 nearest_delta_us = qemu_next_deadline_dyntick();
1287 /* check whether a timer is already running */
1288 if (timer_gettime(host_timer, &timeout)) {
1290 fprintf(stderr, "Internal timer error: aborting\n");
1293 current_us = timeout.it_value.tv_sec * 1000000 + timeout.it_value.tv_nsec/1000;
1294 if (current_us && current_us <= nearest_delta_us)
1297 timeout.it_interval.tv_sec = 0;
1298 timeout.it_interval.tv_nsec = 0; /* 0 for one-shot timer */
1299 timeout.it_value.tv_sec = nearest_delta_us / 1000000;
1300 timeout.it_value.tv_nsec = (nearest_delta_us % 1000000) * 1000;
1301 if (timer_settime(host_timer, 0 /* RELATIVE */, &timeout, NULL)) {
1303 fprintf(stderr, "Internal timer error: aborting\n");
1308 #endif /* defined(__linux__) */
1310 static int unix_start_timer(struct qemu_alarm_timer *t)
1312 struct sigaction act;
1313 struct itimerval itv;
1317 sigfillset(&act.sa_mask);
1319 act.sa_handler = host_alarm_handler;
1321 sigaction(SIGALRM, &act, NULL);
1323 itv.it_interval.tv_sec = 0;
1324 /* for i386 kernel 2.6 to get 1 ms */
1325 itv.it_interval.tv_usec = 999;
1326 itv.it_value.tv_sec = 0;
1327 itv.it_value.tv_usec = 10 * 1000;
1329 err = setitimer(ITIMER_REAL, &itv, NULL);
1336 static void unix_stop_timer(struct qemu_alarm_timer *t)
1338 struct itimerval itv;
1340 memset(&itv, 0, sizeof(itv));
1341 setitimer(ITIMER_REAL, &itv, NULL);
1344 #endif /* !defined(_WIN32) */
1349 static int win32_start_timer(struct qemu_alarm_timer *t)
1352 struct qemu_alarm_win32 *data = t->priv;
1355 memset(&tc, 0, sizeof(tc));
1356 timeGetDevCaps(&tc, sizeof(tc));
1358 data->period = tc.wPeriodMin;
1359 timeBeginPeriod(data->period);
1361 flags = TIME_CALLBACK_FUNCTION;
1362 if (alarm_has_dynticks(t))
1363 flags |= TIME_ONESHOT;
1365 flags |= TIME_PERIODIC;
1367 data->timerId = timeSetEvent(1, // interval (ms)
1368 data->period, // resolution
1369 host_alarm_handler, // function
1370 (DWORD)t, // parameter
1373 if (!data->timerId) {
1374 fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n",
1376 timeEndPeriod(data->period);
1383 static void win32_stop_timer(struct qemu_alarm_timer *t)
1385 struct qemu_alarm_win32 *data = t->priv;
1387 timeKillEvent(data->timerId);
1388 timeEndPeriod(data->period);
1391 static void win32_rearm_timer(struct qemu_alarm_timer *t)
1393 struct qemu_alarm_win32 *data = t->priv;
1395 assert(alarm_has_dynticks(t));
1396 if (!active_timers[QEMU_CLOCK_REALTIME] &&
1397 !active_timers[QEMU_CLOCK_VIRTUAL] &&
1398 !active_timers[QEMU_CLOCK_HOST])
1401 timeKillEvent(data->timerId);
1403 data->timerId = timeSetEvent(1,
1407 TIME_ONESHOT | TIME_CALLBACK_FUNCTION);
1409 if (!data->timerId) {
1410 fprintf(stderr, "Failed to re-arm win32 alarm timer %ld\n",
1413 timeEndPeriod(data->period);
1420 static void alarm_timer_on_change_state_rearm(void *opaque, int running, int reason)
1423 qemu_rearm_alarm_timer((struct qemu_alarm_timer *) opaque);
1426 static int init_timer_alarm(void)
1428 struct qemu_alarm_timer *t = NULL;
1431 for (i = 0; alarm_timers[i].name; i++) {
1432 t = &alarm_timers[i];
1444 /* first event is at time 0 */
1447 qemu_add_vm_change_state_handler(alarm_timer_on_change_state_rearm, t);
1455 static void quit_timers(void)
1457 struct qemu_alarm_timer *t = alarm_timer;
1462 /***********************************************************/
1463 /* host time/date access */
1464 void qemu_get_timedate(struct tm *tm, int offset)
1471 if (rtc_date_offset == -1) {
1475 ret = localtime(&ti);
1477 ti -= rtc_date_offset;
1481 memcpy(tm, ret, sizeof(struct tm));
1484 int qemu_timedate_diff(struct tm *tm)
1488 if (rtc_date_offset == -1)
1490 seconds = mktimegm(tm);
1492 seconds = mktime(tm);
1494 seconds = mktimegm(tm) + rtc_date_offset;
1496 return seconds - time(NULL);
1499 void rtc_change_mon_event(struct tm *tm)
1503 data = qobject_from_jsonf("{ 'offset': %d }", qemu_timedate_diff(tm));
1504 monitor_protocol_event(QEVENT_RTC_CHANGE, data);
1505 qobject_decref(data);
1508 static void configure_rtc_date_offset(const char *startdate, int legacy)
1510 time_t rtc_start_date;
1513 if (!strcmp(startdate, "now") && legacy) {
1514 rtc_date_offset = -1;
1516 if (sscanf(startdate, "%d-%d-%dT%d:%d:%d",
1524 } else if (sscanf(startdate, "%d-%d-%d",
1527 &tm.tm_mday) == 3) {
1536 rtc_start_date = mktimegm(&tm);
1537 if (rtc_start_date == -1) {
1539 fprintf(stderr, "Invalid date format. Valid formats are:\n"
1540 "'2006-06-17T16:01:21' or '2006-06-17'\n");
1543 rtc_date_offset = time(NULL) - rtc_start_date;
1547 static void configure_rtc(QemuOpts *opts)
1551 value = qemu_opt_get(opts, "base");
1553 if (!strcmp(value, "utc")) {
1555 } else if (!strcmp(value, "localtime")) {
1558 configure_rtc_date_offset(value, 0);
1561 value = qemu_opt_get(opts, "clock");
1563 if (!strcmp(value, "host")) {
1564 rtc_clock = host_clock;
1565 } else if (!strcmp(value, "vm")) {
1566 rtc_clock = vm_clock;
1568 fprintf(stderr, "qemu: invalid option value '%s'\n", value);
1572 #ifdef CONFIG_TARGET_I386
1573 value = qemu_opt_get(opts, "driftfix");
1575 if (!strcmp(buf, "slew")) {
1577 } else if (!strcmp(buf, "none")) {
1580 fprintf(stderr, "qemu: invalid option value '%s'\n", value);
1588 static void socket_cleanup(void)
1593 static int socket_init(void)
1598 ret = WSAStartup(MAKEWORD(2,2), &Data);
1600 err = WSAGetLastError();
1601 fprintf(stderr, "WSAStartup: %d\n", err);
1604 atexit(socket_cleanup);
1609 /***********************************************************/
1610 /* Bluetooth support */
1613 static struct HCIInfo *hci_table[MAX_NICS];
1615 static struct bt_vlan_s {
1616 struct bt_scatternet_s net;
1618 struct bt_vlan_s *next;
1621 /* find or alloc a new bluetooth "VLAN" */
1622 static struct bt_scatternet_s *qemu_find_bt_vlan(int id)
1624 struct bt_vlan_s **pvlan, *vlan;
1625 for (vlan = first_bt_vlan; vlan != NULL; vlan = vlan->next) {
1629 vlan = qemu_mallocz(sizeof(struct bt_vlan_s));
1631 pvlan = &first_bt_vlan;
1632 while (*pvlan != NULL)
1633 pvlan = &(*pvlan)->next;
1638 static void null_hci_send(struct HCIInfo *hci, const uint8_t *data, int len)
1642 static int null_hci_addr_set(struct HCIInfo *hci, const uint8_t *bd_addr)
1647 static struct HCIInfo null_hci = {
1648 .cmd_send = null_hci_send,
1649 .sco_send = null_hci_send,
1650 .acl_send = null_hci_send,
1651 .bdaddr_set = null_hci_addr_set,
1654 struct HCIInfo *qemu_next_hci(void)
1656 if (cur_hci == nb_hcis)
1659 return hci_table[cur_hci++];
1662 static struct HCIInfo *hci_init(const char *str)
1665 struct bt_scatternet_s *vlan = 0;
1667 if (!strcmp(str, "null"))
1670 else if (!strncmp(str, "host", 4) && (str[4] == '\0' || str[4] == ':'))
1672 return bt_host_hci(str[4] ? str + 5 : "hci0");
1673 else if (!strncmp(str, "hci", 3)) {
1676 if (!strncmp(str + 3, ",vlan=", 6)) {
1677 vlan = qemu_find_bt_vlan(strtol(str + 9, &endp, 0));
1682 vlan = qemu_find_bt_vlan(0);
1684 return bt_new_hci(vlan);
1687 fprintf(stderr, "qemu: Unknown bluetooth HCI `%s'.\n", str);
1692 static int bt_hci_parse(const char *str)
1694 struct HCIInfo *hci;
1697 if (nb_hcis >= MAX_NICS) {
1698 fprintf(stderr, "qemu: Too many bluetooth HCIs (max %i).\n", MAX_NICS);
1702 hci = hci_init(str);
1711 bdaddr.b[5] = 0x56 + nb_hcis;
1712 hci->bdaddr_set(hci, bdaddr.b);
1714 hci_table[nb_hcis++] = hci;
1719 static void bt_vhci_add(int vlan_id)
1721 struct bt_scatternet_s *vlan = qemu_find_bt_vlan(vlan_id);
1724 fprintf(stderr, "qemu: warning: adding a VHCI to "
1725 "an empty scatternet %i\n", vlan_id);
1727 bt_vhci_init(bt_new_hci(vlan));
1730 static struct bt_device_s *bt_device_add(const char *opt)
1732 struct bt_scatternet_s *vlan;
1734 char *endp = strstr(opt, ",vlan=");
1735 int len = (endp ? endp - opt : strlen(opt)) + 1;
1738 pstrcpy(devname, MIN(sizeof(devname), len), opt);
1741 vlan_id = strtol(endp + 6, &endp, 0);
1743 fprintf(stderr, "qemu: unrecognised bluetooth vlan Id\n");
1748 vlan = qemu_find_bt_vlan(vlan_id);
1751 fprintf(stderr, "qemu: warning: adding a slave device to "
1752 "an empty scatternet %i\n", vlan_id);
1754 if (!strcmp(devname, "keyboard"))
1755 return bt_keyboard_init(vlan);
1757 fprintf(stderr, "qemu: unsupported bluetooth device `%s'\n", devname);
1761 static int bt_parse(const char *opt)
1763 const char *endp, *p;
1766 if (strstart(opt, "hci", &endp)) {
1767 if (!*endp || *endp == ',') {
1769 if (!strstart(endp, ",vlan=", 0))
1772 return bt_hci_parse(opt);
1774 } else if (strstart(opt, "vhci", &endp)) {
1775 if (!*endp || *endp == ',') {
1777 if (strstart(endp, ",vlan=", &p)) {
1778 vlan = strtol(p, (char **) &endp, 0);
1780 fprintf(stderr, "qemu: bad scatternet '%s'\n", p);
1784 fprintf(stderr, "qemu: bad parameter '%s'\n", endp + 1);
1793 } else if (strstart(opt, "device:", &endp))
1794 return !bt_device_add(endp);
1796 fprintf(stderr, "qemu: bad bluetooth parameter '%s'\n", opt);
1800 /***********************************************************/
1801 /* QEMU Block devices */
1803 #define HD_ALIAS "index=%d,media=disk"
1804 #define CDROM_ALIAS "index=2,media=cdrom"
1805 #define FD_ALIAS "index=%d,if=floppy"
1806 #define PFLASH_ALIAS "if=pflash"
1807 #define MTD_ALIAS "if=mtd"
1808 #define SD_ALIAS "index=0,if=sd"
1810 QemuOpts *drive_add(const char *file, const char *fmt, ...)
1817 vsnprintf(optstr, sizeof(optstr), fmt, ap);
1820 opts = qemu_opts_parse(&qemu_drive_opts, optstr, 0);
1822 fprintf(stderr, "%s: huh? duplicate? (%s)\n",
1823 __FUNCTION__, optstr);
1827 qemu_opt_set(opts, "file", file);
1831 DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
1835 /* seek interface, bus and unit */
1837 QTAILQ_FOREACH(dinfo, &drives, next) {
1838 if (dinfo->type == type &&
1839 dinfo->bus == bus &&
1840 dinfo->unit == unit)
1847 DriveInfo *drive_get_by_id(const char *id)
1851 QTAILQ_FOREACH(dinfo, &drives, next) {
1852 if (strcmp(id, dinfo->id))
1859 int drive_get_max_bus(BlockInterfaceType type)
1865 QTAILQ_FOREACH(dinfo, &drives, next) {
1866 if(dinfo->type == type &&
1867 dinfo->bus > max_bus)
1868 max_bus = dinfo->bus;
1873 const char *drive_get_serial(BlockDriverState *bdrv)
1877 QTAILQ_FOREACH(dinfo, &drives, next) {
1878 if (dinfo->bdrv == bdrv)
1879 return dinfo->serial;
1885 BlockInterfaceErrorAction drive_get_on_error(
1886 BlockDriverState *bdrv, int is_read)
1890 QTAILQ_FOREACH(dinfo, &drives, next) {
1891 if (dinfo->bdrv == bdrv)
1892 return is_read ? dinfo->on_read_error : dinfo->on_write_error;
1895 return is_read ? BLOCK_ERR_REPORT : BLOCK_ERR_STOP_ENOSPC;
1898 static void bdrv_format_print(void *opaque, const char *name)
1900 fprintf(stderr, " %s", name);
1903 void drive_uninit(DriveInfo *dinfo)
1905 qemu_opts_del(dinfo->opts);
1906 bdrv_delete(dinfo->bdrv);
1907 QTAILQ_REMOVE(&drives, dinfo, next);
1911 static int parse_block_error_action(const char *buf, int is_read)
1913 if (!strcmp(buf, "ignore")) {
1914 return BLOCK_ERR_IGNORE;
1915 } else if (!is_read && !strcmp(buf, "enospc")) {
1916 return BLOCK_ERR_STOP_ENOSPC;
1917 } else if (!strcmp(buf, "stop")) {
1918 return BLOCK_ERR_STOP_ANY;
1919 } else if (!strcmp(buf, "report")) {
1920 return BLOCK_ERR_REPORT;
1922 fprintf(stderr, "qemu: '%s' invalid %s error action\n",
1923 buf, is_read ? "read" : "write");
1928 DriveInfo *drive_init(QemuOpts *opts, void *opaque,
1932 const char *file = NULL;
1935 const char *mediastr = "";
1936 BlockInterfaceType type;
1937 enum { MEDIA_DISK, MEDIA_CDROM } media;
1938 int bus_id, unit_id;
1939 int cyls, heads, secs, translation;
1940 BlockDriver *drv = NULL;
1941 QEMUMachine *machine = opaque;
1948 int on_read_error, on_write_error;
1949 const char *devaddr;
1955 translation = BIOS_ATA_TRANSLATION_AUTO;
1958 if (machine && machine->use_scsi) {
1960 max_devs = MAX_SCSI_DEVS;
1961 pstrcpy(devname, sizeof(devname), "scsi");
1964 max_devs = MAX_IDE_DEVS;
1965 pstrcpy(devname, sizeof(devname), "ide");
1969 /* extract parameters */
1970 bus_id = qemu_opt_get_number(opts, "bus", 0);
1971 unit_id = qemu_opt_get_number(opts, "unit", -1);
1972 index = qemu_opt_get_number(opts, "index", -1);
1974 cyls = qemu_opt_get_number(opts, "cyls", 0);
1975 heads = qemu_opt_get_number(opts, "heads", 0);
1976 secs = qemu_opt_get_number(opts, "secs", 0);
1978 snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
1979 ro = qemu_opt_get_bool(opts, "readonly", 0);
1981 file = qemu_opt_get(opts, "file");
1982 serial = qemu_opt_get(opts, "serial");
1984 if ((buf = qemu_opt_get(opts, "if")) != NULL) {
1985 pstrcpy(devname, sizeof(devname), buf);
1986 if (!strcmp(buf, "ide")) {
1988 max_devs = MAX_IDE_DEVS;
1989 } else if (!strcmp(buf, "scsi")) {
1991 max_devs = MAX_SCSI_DEVS;
1992 } else if (!strcmp(buf, "floppy")) {
1995 } else if (!strcmp(buf, "pflash")) {
1998 } else if (!strcmp(buf, "mtd")) {
2001 } else if (!strcmp(buf, "sd")) {
2004 } else if (!strcmp(buf, "virtio")) {
2007 } else if (!strcmp(buf, "xen")) {
2010 } else if (!strcmp(buf, "none")) {
2014 fprintf(stderr, "qemu: unsupported bus type '%s'\n", buf);
2019 if (cyls || heads || secs) {
2020 if (cyls < 1 || (type == IF_IDE && cyls > 16383)) {
2021 fprintf(stderr, "qemu: '%s' invalid physical cyls number\n", buf);
2024 if (heads < 1 || (type == IF_IDE && heads > 16)) {
2025 fprintf(stderr, "qemu: '%s' invalid physical heads number\n", buf);
2028 if (secs < 1 || (type == IF_IDE && secs > 63)) {
2029 fprintf(stderr, "qemu: '%s' invalid physical secs number\n", buf);
2034 if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
2037 "qemu: '%s' trans must be used with cyls,heads and secs\n",
2041 if (!strcmp(buf, "none"))
2042 translation = BIOS_ATA_TRANSLATION_NONE;
2043 else if (!strcmp(buf, "lba"))
2044 translation = BIOS_ATA_TRANSLATION_LBA;
2045 else if (!strcmp(buf, "auto"))
2046 translation = BIOS_ATA_TRANSLATION_AUTO;
2048 fprintf(stderr, "qemu: '%s' invalid translation type\n", buf);
2053 if ((buf = qemu_opt_get(opts, "media")) != NULL) {
2054 if (!strcmp(buf, "disk")) {
2056 } else if (!strcmp(buf, "cdrom")) {
2057 if (cyls || secs || heads) {
2059 "qemu: '%s' invalid physical CHS format\n", buf);
2062 media = MEDIA_CDROM;
2064 fprintf(stderr, "qemu: '%s' invalid media\n", buf);
2069 if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
2070 if (!strcmp(buf, "off") || !strcmp(buf, "none"))
2072 else if (!strcmp(buf, "writethrough"))
2074 else if (!strcmp(buf, "writeback"))
2077 fprintf(stderr, "qemu: invalid cache option\n");
2082 #ifdef CONFIG_LINUX_AIO
2083 if ((buf = qemu_opt_get(opts, "aio")) != NULL) {
2084 if (!strcmp(buf, "threads"))
2086 else if (!strcmp(buf, "native"))
2089 fprintf(stderr, "qemu: invalid aio option\n");
2095 if ((buf = qemu_opt_get(opts, "format")) != NULL) {
2096 if (strcmp(buf, "?") == 0) {
2097 fprintf(stderr, "qemu: Supported formats:");
2098 bdrv_iterate_format(bdrv_format_print, NULL);
2099 fprintf(stderr, "\n");
2102 drv = bdrv_find_whitelisted_format(buf);
2104 fprintf(stderr, "qemu: '%s' invalid format\n", buf);
2109 on_write_error = BLOCK_ERR_STOP_ENOSPC;
2110 if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
2111 if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO) {
2112 fprintf(stderr, "werror is no supported by this format\n");
2116 on_write_error = parse_block_error_action(buf, 0);
2117 if (on_write_error < 0) {
2122 on_read_error = BLOCK_ERR_REPORT;
2123 if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
2124 if (type != IF_IDE && type != IF_VIRTIO) {
2125 fprintf(stderr, "rerror is no supported by this format\n");
2129 on_read_error = parse_block_error_action(buf, 1);
2130 if (on_read_error < 0) {
2135 if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
2136 if (type != IF_VIRTIO) {
2137 fprintf(stderr, "addr is not supported\n");
2142 /* compute bus and unit according index */
2145 if (bus_id != 0 || unit_id != -1) {
2147 "qemu: index cannot be used with bus and unit\n");
2155 unit_id = index % max_devs;
2156 bus_id = index / max_devs;
2160 /* if user doesn't specify a unit_id,
2161 * try to find the first free
2164 if (unit_id == -1) {
2166 while (drive_get(type, bus_id, unit_id) != NULL) {
2168 if (max_devs && unit_id >= max_devs) {
2169 unit_id -= max_devs;
2177 if (max_devs && unit_id >= max_devs) {
2178 fprintf(stderr, "qemu: unit %d too big (max is %d)\n",
2179 unit_id, max_devs - 1);
2184 * ignore multiple definitions
2187 if (drive_get(type, bus_id, unit_id) != NULL) {
2194 dinfo = qemu_mallocz(sizeof(*dinfo));
2195 if ((buf = qemu_opts_id(opts)) != NULL) {
2196 dinfo->id = qemu_strdup(buf);
2198 /* no id supplied -> create one */
2199 dinfo->id = qemu_mallocz(32);
2200 if (type == IF_IDE || type == IF_SCSI)
2201 mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
2203 snprintf(dinfo->id, 32, "%s%i%s%i",
2204 devname, bus_id, mediastr, unit_id);
2206 snprintf(dinfo->id, 32, "%s%s%i",
2207 devname, mediastr, unit_id);
2209 dinfo->bdrv = bdrv_new(dinfo->id);
2210 dinfo->devaddr = devaddr;
2212 dinfo->bus = bus_id;
2213 dinfo->unit = unit_id;
2214 dinfo->on_read_error = on_read_error;
2215 dinfo->on_write_error = on_write_error;
2218 strncpy(dinfo->serial, serial, sizeof(serial));
2219 QTAILQ_INSERT_TAIL(&drives, dinfo, next);
2229 bdrv_set_geometry_hint(dinfo->bdrv, cyls, heads, secs);
2230 bdrv_set_translation_hint(dinfo->bdrv, translation);
2234 bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_CDROM);
2239 /* FIXME: This isn't really a floppy, but it's a reasonable
2242 bdrv_set_type_hint(dinfo->bdrv, BDRV_TYPE_FLOPPY);
2248 /* add virtio block device */
2249 opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
2250 qemu_opt_set(opts, "driver", "virtio-blk-pci");
2251 qemu_opt_set(opts, "drive", dinfo->id);
2253 qemu_opt_set(opts, "addr", devaddr);
2264 bdrv_flags |= BDRV_O_SNAPSHOT;
2265 cache = 2; /* always use write-back with snapshot */
2267 if (cache == 0) /* no caching */
2268 bdrv_flags |= BDRV_O_NOCACHE;
2269 else if (cache == 2) /* write-back */
2270 bdrv_flags |= BDRV_O_CACHE_WB;
2273 bdrv_flags |= BDRV_O_NATIVE_AIO;
2275 bdrv_flags &= ~BDRV_O_NATIVE_AIO;
2279 if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY) {
2280 fprintf(stderr, "qemu: readonly flag not supported for drive with this interface\n");
2285 * cdrom is read-only. Set it now, after above interface checking
2286 * since readonly attribute not explicitly required, so no error.
2288 if (media == MEDIA_CDROM) {
2291 bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
2293 if (bdrv_open2(dinfo->bdrv, file, bdrv_flags, drv) < 0) {
2294 fprintf(stderr, "qemu: could not open disk image %s: %s\n",
2295 file, strerror(errno));
2299 if (bdrv_key_required(dinfo->bdrv))
2305 static int drive_init_func(QemuOpts *opts, void *opaque)
2307 QEMUMachine *machine = opaque;
2308 int fatal_error = 0;
2310 if (drive_init(opts, machine, &fatal_error) == NULL) {
2317 static int drive_enable_snapshot(QemuOpts *opts, void *opaque)
2319 if (NULL == qemu_opt_get(opts, "snapshot")) {
2320 qemu_opt_set(opts, "snapshot", "on");
2325 void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque)
2327 boot_set_handler = func;
2328 boot_set_opaque = opaque;
2331 int qemu_boot_set(const char *boot_devices)
2333 if (!boot_set_handler) {
2336 return boot_set_handler(boot_set_opaque, boot_devices);
2339 static int parse_bootdevices(char *devices)
2341 /* We just do some generic consistency checks */
2345 for (p = devices; *p != '\0'; p++) {
2346 /* Allowed boot devices are:
2347 * a-b: floppy disk drives
2348 * c-f: IDE disk drives
2349 * g-m: machine implementation dependant drives
2350 * n-p: network devices
2351 * It's up to each machine implementation to check if the given boot
2352 * devices match the actual hardware implementation and firmware
2355 if (*p < 'a' || *p > 'p') {
2356 fprintf(stderr, "Invalid boot device '%c'\n", *p);
2359 if (bitmap & (1 << (*p - 'a'))) {
2360 fprintf(stderr, "Boot device '%c' was given twice\n", *p);
2363 bitmap |= 1 << (*p - 'a');
2368 static void restore_boot_devices(void *opaque)
2370 char *standard_boot_devices = opaque;
2372 qemu_boot_set(standard_boot_devices);
2374 qemu_unregister_reset(restore_boot_devices, standard_boot_devices);
2375 qemu_free(standard_boot_devices);
2378 static void numa_add(const char *optarg)
2382 unsigned long long value, endvalue;
2385 optarg = get_opt_name(option, 128, optarg, ',') + 1;
2386 if (!strcmp(option, "node")) {
2387 if (get_param_value(option, 128, "nodeid", optarg) == 0) {
2388 nodenr = nb_numa_nodes;
2390 nodenr = strtoull(option, NULL, 10);
2393 if (get_param_value(option, 128, "mem", optarg) == 0) {
2394 node_mem[nodenr] = 0;
2396 value = strtoull(option, &endptr, 0);
2398 case 0: case 'M': case 'm':
2405 node_mem[nodenr] = value;
2407 if (get_param_value(option, 128, "cpus", optarg) == 0) {
2408 node_cpumask[nodenr] = 0;
2410 value = strtoull(option, &endptr, 10);
2413 fprintf(stderr, "only 64 CPUs in NUMA mode supported.\n");
2415 if (*endptr == '-') {
2416 endvalue = strtoull(endptr+1, &endptr, 10);
2417 if (endvalue >= 63) {
2420 "only 63 CPUs in NUMA mode supported.\n");
2422 value = (2ULL << endvalue) - (1ULL << value);
2424 value = 1ULL << value;
2427 node_cpumask[nodenr] = value;
2434 static void smp_parse(const char *optarg)
2436 int smp, sockets = 0, threads = 0, cores = 0;
2440 smp = strtoul(optarg, &endptr, 10);
2441 if (endptr != optarg) {
2442 if (*endptr == ',') {
2446 if (get_param_value(option, 128, "sockets", endptr) != 0)
2447 sockets = strtoull(option, NULL, 10);
2448 if (get_param_value(option, 128, "cores", endptr) != 0)
2449 cores = strtoull(option, NULL, 10);
2450 if (get_param_value(option, 128, "threads", endptr) != 0)
2451 threads = strtoull(option, NULL, 10);
2452 if (get_param_value(option, 128, "maxcpus", endptr) != 0)
2453 max_cpus = strtoull(option, NULL, 10);
2455 /* compute missing values, prefer sockets over cores over threads */
2456 if (smp == 0 || sockets == 0) {
2457 sockets = sockets > 0 ? sockets : 1;
2458 cores = cores > 0 ? cores : 1;
2459 threads = threads > 0 ? threads : 1;
2461 smp = cores * threads * sockets;
2465 threads = threads > 0 ? threads : 1;
2466 cores = smp / (sockets * threads);
2469 threads = smp / (cores * sockets);
2474 smp_cores = cores > 0 ? cores : 1;
2475 smp_threads = threads > 0 ? threads : 1;
2477 max_cpus = smp_cpus;
2480 /***********************************************************/
2483 static int usb_device_add(const char *devname, int is_hotplug)
2486 USBDevice *dev = NULL;
2491 /* drivers with .usbdevice_name entry in USBDeviceInfo */
2492 dev = usbdevice_create(devname);
2496 /* the other ones */
2497 if (strstart(devname, "host:", &p)) {
2498 dev = usb_host_device_open(p);
2499 } else if (!strcmp(devname, "bt") || strstart(devname, "bt:", &p)) {
2500 dev = usb_bt_init(devname[2] ? hci_init(p) :
2501 bt_new_hci(qemu_find_bt_vlan(0)));
2512 static int usb_device_del(const char *devname)
2517 if (strstart(devname, "host:", &p))
2518 return usb_host_device_close(p);
2523 p = strchr(devname, '.');
2526 bus_num = strtoul(devname, NULL, 0);
2527 addr = strtoul(p + 1, NULL, 0);
2529 return usb_device_delete_addr(bus_num, addr);
2532 static int usb_parse(const char *cmdline)
2535 r = usb_device_add(cmdline, 0);
2537 fprintf(stderr, "qemu: could not add USB device '%s'\n", cmdline);
2542 void do_usb_add(Monitor *mon, const QDict *qdict)
2544 const char *devname = qdict_get_str(qdict, "devname");
2545 if (usb_device_add(devname, 1) < 0) {
2546 error_report("could not add USB device '%s'", devname);
2550 void do_usb_del(Monitor *mon, const QDict *qdict)
2552 const char *devname = qdict_get_str(qdict, "devname");
2553 if (usb_device_del(devname) < 0) {
2554 error_report("could not delete USB device '%s'", devname);
2558 /***********************************************************/
2559 /* PCMCIA/Cardbus */
2561 static struct pcmcia_socket_entry_s {
2562 PCMCIASocket *socket;
2563 struct pcmcia_socket_entry_s *next;
2564 } *pcmcia_sockets = 0;
2566 void pcmcia_socket_register(PCMCIASocket *socket)
2568 struct pcmcia_socket_entry_s *entry;
2570 entry = qemu_malloc(sizeof(struct pcmcia_socket_entry_s));
2571 entry->socket = socket;
2572 entry->next = pcmcia_sockets;
2573 pcmcia_sockets = entry;
2576 void pcmcia_socket_unregister(PCMCIASocket *socket)
2578 struct pcmcia_socket_entry_s *entry, **ptr;
2580 ptr = &pcmcia_sockets;
2581 for (entry = *ptr; entry; ptr = &entry->next, entry = *ptr)
2582 if (entry->socket == socket) {
2588 void pcmcia_info(Monitor *mon)
2590 struct pcmcia_socket_entry_s *iter;
2592 if (!pcmcia_sockets)
2593 monitor_printf(mon, "No PCMCIA sockets\n");
2595 for (iter = pcmcia_sockets; iter; iter = iter->next)
2596 monitor_printf(mon, "%s: %s\n", iter->socket->slot_string,
2597 iter->socket->attached ? iter->socket->card_string :
2601 /***********************************************************/
2604 typedef struct IOHandlerRecord {
2606 IOCanRWHandler *fd_read_poll;
2608 IOHandler *fd_write;
2611 /* temporary data */
2613 struct IOHandlerRecord *next;
2616 static IOHandlerRecord *first_io_handler;
2618 /* XXX: fd_read_poll should be suppressed, but an API change is
2619 necessary in the character devices to suppress fd_can_read(). */
2620 int qemu_set_fd_handler2(int fd,
2621 IOCanRWHandler *fd_read_poll,
2623 IOHandler *fd_write,
2626 IOHandlerRecord **pioh, *ioh;
2628 if (!fd_read && !fd_write) {
2629 pioh = &first_io_handler;
2634 if (ioh->fd == fd) {
2641 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
2645 ioh = qemu_mallocz(sizeof(IOHandlerRecord));
2646 ioh->next = first_io_handler;
2647 first_io_handler = ioh;
2650 ioh->fd_read_poll = fd_read_poll;
2651 ioh->fd_read = fd_read;
2652 ioh->fd_write = fd_write;
2653 ioh->opaque = opaque;
2659 int qemu_set_fd_handler(int fd,
2661 IOHandler *fd_write,
2664 return qemu_set_fd_handler2(fd, NULL, fd_read, fd_write, opaque);
2668 /***********************************************************/
2669 /* Polling handling */
2671 typedef struct PollingEntry {
2674 struct PollingEntry *next;
2677 static PollingEntry *first_polling_entry;
2679 int qemu_add_polling_cb(PollingFunc *func, void *opaque)
2681 PollingEntry **ppe, *pe;
2682 pe = qemu_mallocz(sizeof(PollingEntry));
2684 pe->opaque = opaque;
2685 for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
2690 void qemu_del_polling_cb(PollingFunc *func, void *opaque)
2692 PollingEntry **ppe, *pe;
2693 for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) {
2695 if (pe->func == func && pe->opaque == opaque) {
2703 /***********************************************************/
2704 /* Wait objects support */
2705 typedef struct WaitObjects {
2707 HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
2708 WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
2709 void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
2712 static WaitObjects wait_objects = {0};
2714 int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
2716 WaitObjects *w = &wait_objects;
2718 if (w->num >= MAXIMUM_WAIT_OBJECTS)
2720 w->events[w->num] = handle;
2721 w->func[w->num] = func;
2722 w->opaque[w->num] = opaque;
2727 void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
2730 WaitObjects *w = &wait_objects;
2733 for (i = 0; i < w->num; i++) {
2734 if (w->events[i] == handle)
2737 w->events[i] = w->events[i + 1];
2738 w->func[i] = w->func[i + 1];
2739 w->opaque[i] = w->opaque[i + 1];
2747 /***********************************************************/
2748 /* ram save/restore */
2750 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
2751 #define RAM_SAVE_FLAG_COMPRESS 0x02
2752 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
2753 #define RAM_SAVE_FLAG_PAGE 0x08
2754 #define RAM_SAVE_FLAG_EOS 0x10
2756 static int is_dup_page(uint8_t *page, uint8_t ch)
2758 uint32_t val = ch << 24 | ch << 16 | ch << 8 | ch;
2759 uint32_t *array = (uint32_t *)page;
2762 for (i = 0; i < (TARGET_PAGE_SIZE / 4); i++) {
2763 if (array[i] != val)
2770 static int ram_save_block(QEMUFile *f)
2772 static ram_addr_t current_addr = 0;
2773 ram_addr_t saved_addr = current_addr;
2774 ram_addr_t addr = 0;
2777 while (addr < last_ram_offset) {
2778 if (cpu_physical_memory_get_dirty(current_addr, MIGRATION_DIRTY_FLAG)) {
2781 cpu_physical_memory_reset_dirty(current_addr,
2782 current_addr + TARGET_PAGE_SIZE,
2783 MIGRATION_DIRTY_FLAG);
2785 p = qemu_get_ram_ptr(current_addr);
2787 if (is_dup_page(p, *p)) {
2788 qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_COMPRESS);
2789 qemu_put_byte(f, *p);
2791 qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_PAGE);
2792 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
2798 addr += TARGET_PAGE_SIZE;
2799 current_addr = (saved_addr + addr) % last_ram_offset;
2805 static uint64_t bytes_transferred;
2807 static ram_addr_t ram_save_remaining(void)
2810 ram_addr_t count = 0;
2812 for (addr = 0; addr < last_ram_offset; addr += TARGET_PAGE_SIZE) {
2813 if (cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG))
2820 uint64_t ram_bytes_remaining(void)
2822 return ram_save_remaining() * TARGET_PAGE_SIZE;
2825 uint64_t ram_bytes_transferred(void)
2827 return bytes_transferred;
2830 uint64_t ram_bytes_total(void)
2832 return last_ram_offset;
2835 static int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
2838 uint64_t bytes_transferred_last;
2840 uint64_t expected_time = 0;
2843 cpu_physical_memory_set_dirty_tracking(0);
2847 if (cpu_physical_sync_dirty_bitmap(0, TARGET_PHYS_ADDR_MAX) != 0) {
2848 qemu_file_set_error(f);
2853 bytes_transferred = 0;
2855 /* Make sure all dirty bits are set */
2856 for (addr = 0; addr < last_ram_offset; addr += TARGET_PAGE_SIZE) {
2857 if (!cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG))
2858 cpu_physical_memory_set_dirty(addr);
2861 /* Enable dirty memory tracking */
2862 cpu_physical_memory_set_dirty_tracking(1);
2864 qemu_put_be64(f, last_ram_offset | RAM_SAVE_FLAG_MEM_SIZE);
2867 bytes_transferred_last = bytes_transferred;
2868 bwidth = qemu_get_clock_ns(rt_clock);
2870 while (!qemu_file_rate_limit(f)) {
2873 ret = ram_save_block(f);
2874 bytes_transferred += ret * TARGET_PAGE_SIZE;
2875 if (ret == 0) /* no more blocks */
2879 bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
2880 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
2882 /* if we haven't transferred anything this round, force expected_time to a
2883 * a very high value, but without crashing */
2887 /* try transferring iterative blocks of memory */
2889 /* flush all remaining blocks regardless of rate limiting */
2890 while (ram_save_block(f) != 0) {
2891 bytes_transferred += TARGET_PAGE_SIZE;
2893 cpu_physical_memory_set_dirty_tracking(0);
2896 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
2898 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
2900 return (stage == 2) && (expected_time <= migrate_max_downtime());
2903 static int ram_load(QEMUFile *f, void *opaque, int version_id)
2908 if (version_id != 3)
2912 addr = qemu_get_be64(f);
2914 flags = addr & ~TARGET_PAGE_MASK;
2915 addr &= TARGET_PAGE_MASK;
2917 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
2918 if (addr != last_ram_offset)
2922 if (flags & RAM_SAVE_FLAG_COMPRESS) {
2923 uint8_t ch = qemu_get_byte(f);
2924 memset(qemu_get_ram_ptr(addr), ch, TARGET_PAGE_SIZE);
2927 (!kvm_enabled() || kvm_has_sync_mmu())) {
2928 madvise(qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE, MADV_DONTNEED);
2931 } else if (flags & RAM_SAVE_FLAG_PAGE) {
2932 qemu_get_buffer(f, qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE);
2934 if (qemu_file_has_error(f)) {
2937 } while (!(flags & RAM_SAVE_FLAG_EOS));
2942 void qemu_service_io(void)
2944 qemu_notify_event();
2947 /***********************************************************/
2948 /* machine registration */
2950 static QEMUMachine *first_machine = NULL;
2951 QEMUMachine *current_machine = NULL;
2953 int qemu_register_machine(QEMUMachine *m)
2956 pm = &first_machine;
2964 static QEMUMachine *find_machine(const char *name)
2968 for(m = first_machine; m != NULL; m = m->next) {
2969 if (!strcmp(m->name, name))
2971 if (m->alias && !strcmp(m->alias, name))
2977 static QEMUMachine *find_default_machine(void)
2981 for(m = first_machine; m != NULL; m = m->next) {
2982 if (m->is_default) {
2989 /***********************************************************/
2990 /* main execution loop */
2992 static void gui_update(void *opaque)
2994 uint64_t interval = GUI_REFRESH_INTERVAL;
2995 DisplayState *ds = opaque;
2996 DisplayChangeListener *dcl = ds->listeners;
2998 qemu_flush_coalesced_mmio_buffer();
3001 while (dcl != NULL) {
3002 if (dcl->gui_timer_interval &&
3003 dcl->gui_timer_interval < interval)
3004 interval = dcl->gui_timer_interval;
3007 qemu_mod_timer(ds->gui_timer, interval + qemu_get_clock(rt_clock));
3010 static void nographic_update(void *opaque)
3012 uint64_t interval = GUI_REFRESH_INTERVAL;
3014 qemu_flush_coalesced_mmio_buffer();
3015 qemu_mod_timer(nographic_timer, interval + qemu_get_clock(rt_clock));
3018 void cpu_synchronize_all_states(void)
3022 for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
3023 cpu_synchronize_state(cpu);
3027 void cpu_synchronize_all_post_reset(void)
3031 for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
3032 cpu_synchronize_post_reset(cpu);
3036 void cpu_synchronize_all_post_init(void)
3040 for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) {
3041 cpu_synchronize_post_init(cpu);
3045 struct vm_change_state_entry {
3046 VMChangeStateHandler *cb;
3048 QLIST_ENTRY (vm_change_state_entry) entries;
3051 static QLIST_HEAD(vm_change_state_head, vm_change_state_entry) vm_change_state_head;
3053 VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
3056 VMChangeStateEntry *e;
3058 e = qemu_mallocz(sizeof (*e));
3062 QLIST_INSERT_HEAD(&vm_change_state_head, e, entries);
3066 void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
3068 QLIST_REMOVE (e, entries);
3072 static void vm_state_notify(int running, int reason)
3074 VMChangeStateEntry *e;
3076 for (e = vm_change_state_head.lh_first; e; e = e->entries.le_next) {
3077 e->cb(e->opaque, running, reason);
3081 static void resume_all_vcpus(void);
3082 static void pause_all_vcpus(void);
3089 vm_state_notify(1, 0);
3094 /* reset/shutdown handler */
3096 typedef struct QEMUResetEntry {
3097 QTAILQ_ENTRY(QEMUResetEntry) entry;
3098 QEMUResetHandler *func;
3102 static QTAILQ_HEAD(reset_handlers, QEMUResetEntry) reset_handlers =
3103 QTAILQ_HEAD_INITIALIZER(reset_handlers);
3104 static int reset_requested;
3105 static int shutdown_requested;
3106 static int powerdown_requested;
3107 static int debug_requested;
3108 static int vmstop_requested;
3110 int qemu_shutdown_requested(void)
3112 int r = shutdown_requested;
3113 shutdown_requested = 0;
3117 int qemu_reset_requested(void)
3119 int r = reset_requested;
3120 reset_requested = 0;
3124 int qemu_powerdown_requested(void)
3126 int r = powerdown_requested;
3127 powerdown_requested = 0;
3131 static int qemu_debug_requested(void)
3133 int r = debug_requested;
3134 debug_requested = 0;
3138 static int qemu_vmstop_requested(void)
3140 int r = vmstop_requested;
3141 vmstop_requested = 0;
3145 static void do_vm_stop(int reason)
3148 cpu_disable_ticks();
3151 vm_state_notify(0, reason);
3152 monitor_protocol_event(QEVENT_STOP, NULL);
3156 void qemu_register_reset(QEMUResetHandler *func, void *opaque)
3158 QEMUResetEntry *re = qemu_mallocz(sizeof(QEMUResetEntry));
3161 re->opaque = opaque;
3162 QTAILQ_INSERT_TAIL(&reset_handlers, re, entry);
3165 void qemu_unregister_reset(QEMUResetHandler *func, void *opaque)
3169 QTAILQ_FOREACH(re, &reset_handlers, entry) {
3170 if (re->func == func && re->opaque == opaque) {
3171 QTAILQ_REMOVE(&reset_handlers, re, entry);
3178 void qemu_system_reset(void)
3180 QEMUResetEntry *re, *nre;
3182 /* reset all devices */
3183 QTAILQ_FOREACH_SAFE(re, &reset_handlers, entry, nre) {
3184 re->func(re->opaque);
3186 monitor_protocol_event(QEVENT_RESET, NULL);
3187 cpu_synchronize_all_post_reset();
3190 void qemu_system_reset_request(void)
3193 shutdown_requested = 1;
3195 reset_requested = 1;
3197 qemu_notify_event();
3200 void qemu_system_shutdown_request(void)
3202 shutdown_requested = 1;
3203 qemu_notify_event();
3206 void qemu_system_powerdown_request(void)
3208 powerdown_requested = 1;
3209 qemu_notify_event();
3212 #ifdef CONFIG_IOTHREAD
3213 static void qemu_system_vmstop_request(int reason)
3215 vmstop_requested = reason;
3216 qemu_notify_event();
3221 static int io_thread_fd = -1;
3223 static void qemu_event_increment(void)
3225 /* Write 8 bytes to be compatible with eventfd. */
3226 static uint64_t val = 1;
3229 if (io_thread_fd == -1)
3233 ret = write(io_thread_fd, &val, sizeof(val));
3234 } while (ret < 0 && errno == EINTR);
3236 /* EAGAIN is fine, a read must be pending. */
3237 if (ret < 0 && errno != EAGAIN) {
3238 fprintf(stderr, "qemu_event_increment: write() filed: %s\n",
3244 static void qemu_event_read(void *opaque)
3246 int fd = (unsigned long)opaque;
3250 /* Drain the notify pipe. For eventfd, only 8 bytes will be read. */
3252 len = read(fd, buffer, sizeof(buffer));
3253 } while ((len == -1 && errno == EINTR) || len == sizeof(buffer));
3256 static int qemu_event_init(void)
3261 err = qemu_eventfd(fds);
3265 err = fcntl_setfl(fds[0], O_NONBLOCK);
3269 err = fcntl_setfl(fds[1], O_NONBLOCK);
3273 qemu_set_fd_handler2(fds[0], NULL, qemu_event_read, NULL,
3274 (void *)(unsigned long)fds[0]);
3276 io_thread_fd = fds[1];
3285 HANDLE qemu_event_handle;
3287 static void dummy_event_handler(void *opaque)
3291 static int qemu_event_init(void)
3293 qemu_event_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
3294 if (!qemu_event_handle) {
3295 fprintf(stderr, "Failed CreateEvent: %ld\n", GetLastError());
3298 qemu_add_wait_object(qemu_event_handle, dummy_event_handler, NULL);
3302 static void qemu_event_increment(void)
3304 if (!SetEvent(qemu_event_handle)) {
3305 fprintf(stderr, "qemu_event_increment: SetEvent failed: %ld\n",
3312 static int cpu_can_run(CPUState *env)
3323 #ifndef CONFIG_IOTHREAD
3324 static int qemu_init_main_loop(void)
3326 return qemu_event_init();
3329 void qemu_init_vcpu(void *_env)
3331 CPUState *env = _env;
3333 env->nr_cores = smp_cores;
3334 env->nr_threads = smp_threads;
3340 int qemu_cpu_self(void *env)
3345 static void resume_all_vcpus(void)
3349 static void pause_all_vcpus(void)
3353 void qemu_cpu_kick(void *env)
3358 void qemu_notify_event(void)
3360 CPUState *env = cpu_single_env;
3362 qemu_event_increment ();
3366 if (next_cpu && env != next_cpu) {
3371 void qemu_mutex_lock_iothread(void) {}
3372 void qemu_mutex_unlock_iothread(void) {}
3374 void vm_stop(int reason)
3379 #else /* CONFIG_IOTHREAD */
3381 #include "qemu-thread.h"
3383 QemuMutex qemu_global_mutex;
3384 static QemuMutex qemu_fair_mutex;
3386 static QemuThread io_thread;
3388 static QemuThread *tcg_cpu_thread;
3389 static QemuCond *tcg_halt_cond;
3391 static int qemu_system_ready;
3393 static QemuCond qemu_cpu_cond;
3395 static QemuCond qemu_system_cond;
3396 static QemuCond qemu_pause_cond;
3398 static void tcg_block_io_signals(void);
3399 static void kvm_block_io_signals(CPUState *env);
3400 static void unblock_io_signals(void);
3401 static int tcg_has_work(void);
3402 static int cpu_has_work(CPUState *env);
3404 static int qemu_init_main_loop(void)
3408 ret = qemu_event_init();
3412 qemu_cond_init(&qemu_pause_cond);
3413 qemu_mutex_init(&qemu_fair_mutex);
3414 qemu_mutex_init(&qemu_global_mutex);
3415 qemu_mutex_lock(&qemu_global_mutex);
3417 unblock_io_signals();
3418 qemu_thread_self(&io_thread);
3423 static void qemu_wait_io_event_common(CPUState *env)
3428 qemu_cond_signal(&qemu_pause_cond);
3432 static void qemu_wait_io_event(CPUState *env)
3434 while (!tcg_has_work())
3435 qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
3437 qemu_mutex_unlock(&qemu_global_mutex);
3440 * Users of qemu_global_mutex can be starved, having no chance
3441 * to acquire it since this path will get to it first.
3442 * So use another lock to provide fairness.
3444 qemu_mutex_lock(&qemu_fair_mutex);
3445 qemu_mutex_unlock(&qemu_fair_mutex);
3447 qemu_mutex_lock(&qemu_global_mutex);
3448 qemu_wait_io_event_common(env);
3451 static void qemu_kvm_eat_signal(CPUState *env, int timeout)
3458 ts.tv_sec = timeout / 1000;
3459 ts.tv_nsec = (timeout % 1000) * 1000000;
3461 sigemptyset(&waitset);
3462 sigaddset(&waitset, SIG_IPI);
3464 qemu_mutex_unlock(&qemu_global_mutex);
3465 r = sigtimedwait(&waitset, &siginfo, &ts);
3467 qemu_mutex_lock(&qemu_global_mutex);
3469 if (r == -1 && !(e == EAGAIN || e == EINTR)) {
3470 fprintf(stderr, "sigtimedwait: %s\n", strerror(e));
3475 static void qemu_kvm_wait_io_event(CPUState *env)
3477 while (!cpu_has_work(env))
3478 qemu_cond_timedwait(env->halt_cond, &qemu_global_mutex, 1000);
3480 qemu_kvm_eat_signal(env, 0);
3481 qemu_wait_io_event_common(env);
3484 static int qemu_cpu_exec(CPUState *env);
3486 static void *kvm_cpu_thread_fn(void *arg)
3488 CPUState *env = arg;
3490 qemu_thread_self(env->thread);
3494 kvm_block_io_signals(env);
3496 /* signal CPU creation */
3497 qemu_mutex_lock(&qemu_global_mutex);
3499 qemu_cond_signal(&qemu_cpu_cond);
3501 /* and wait for machine initialization */
3502 while (!qemu_system_ready)
3503 qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
3506 if (cpu_can_run(env))
3508 qemu_kvm_wait_io_event(env);
3514 static void tcg_cpu_exec(void);
3516 static void *tcg_cpu_thread_fn(void *arg)
3518 CPUState *env = arg;
3520 tcg_block_io_signals();
3521 qemu_thread_self(env->thread);
3523 /* signal CPU creation */
3524 qemu_mutex_lock(&qemu_global_mutex);
3525 for (env = first_cpu; env != NULL; env = env->next_cpu)
3527 qemu_cond_signal(&qemu_cpu_cond);
3529 /* and wait for machine initialization */
3530 while (!qemu_system_ready)
3531 qemu_cond_timedwait(&qemu_system_cond, &qemu_global_mutex, 100);
3535 qemu_wait_io_event(cur_cpu);
3541 void qemu_cpu_kick(void *_env)
3543 CPUState *env = _env;
3544 qemu_cond_broadcast(env->halt_cond);
3546 qemu_thread_signal(env->thread, SIG_IPI);
3549 int qemu_cpu_self(void *_env)
3551 CPUState *env = _env;
3554 qemu_thread_self(&this);
3556 return qemu_thread_equal(&this, env->thread);
3559 static void cpu_signal(int sig)
3562 cpu_exit(cpu_single_env);
3565 static void tcg_block_io_signals(void)
3568 struct sigaction sigact;
3571 sigaddset(&set, SIGUSR2);
3572 sigaddset(&set, SIGIO);
3573 sigaddset(&set, SIGALRM);
3574 sigaddset(&set, SIGCHLD);
3575 pthread_sigmask(SIG_BLOCK, &set, NULL);
3578 sigaddset(&set, SIG_IPI);
3579 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
3581 memset(&sigact, 0, sizeof(sigact));
3582 sigact.sa_handler = cpu_signal;
3583 sigaction(SIG_IPI, &sigact, NULL);
3586 static void dummy_signal(int sig)
3590 static void kvm_block_io_signals(CPUState *env)
3594 struct sigaction sigact;
3597 sigaddset(&set, SIGUSR2);
3598 sigaddset(&set, SIGIO);
3599 sigaddset(&set, SIGALRM);
3600 sigaddset(&set, SIGCHLD);
3601 sigaddset(&set, SIG_IPI);
3602 pthread_sigmask(SIG_BLOCK, &set, NULL);
3604 pthread_sigmask(SIG_BLOCK, NULL, &set);
3605 sigdelset(&set, SIG_IPI);
3607 memset(&sigact, 0, sizeof(sigact));
3608 sigact.sa_handler = dummy_signal;
3609 sigaction(SIG_IPI, &sigact, NULL);
3611 r = kvm_set_signal_mask(env, &set);
3613 fprintf(stderr, "kvm_set_signal_mask: %s\n", strerror(r));
3618 static void unblock_io_signals(void)
3623 sigaddset(&set, SIGUSR2);
3624 sigaddset(&set, SIGIO);
3625 sigaddset(&set, SIGALRM);
3626 pthread_sigmask(SIG_UNBLOCK, &set, NULL);
3629 sigaddset(&set, SIG_IPI);
3630 pthread_sigmask(SIG_BLOCK, &set, NULL);
3633 static void qemu_signal_lock(unsigned int msecs)
3635 qemu_mutex_lock(&qemu_fair_mutex);
3637 while (qemu_mutex_trylock(&qemu_global_mutex)) {
3638 qemu_thread_signal(tcg_cpu_thread, SIG_IPI);
3639 if (!qemu_mutex_timedlock(&qemu_global_mutex, msecs))
3642 qemu_mutex_unlock(&qemu_fair_mutex);
3645 void qemu_mutex_lock_iothread(void)
3647 if (kvm_enabled()) {
3648 qemu_mutex_lock(&qemu_fair_mutex);
3649 qemu_mutex_lock(&qemu_global_mutex);
3650 qemu_mutex_unlock(&qemu_fair_mutex);
3652 qemu_signal_lock(100);
3655 void qemu_mutex_unlock_iothread(void)
3657 qemu_mutex_unlock(&qemu_global_mutex);
3660 static int all_vcpus_paused(void)
3662 CPUState *penv = first_cpu;
3667 penv = (CPUState *)penv->next_cpu;
3673 static void pause_all_vcpus(void)
3675 CPUState *penv = first_cpu;
3679 qemu_thread_signal(penv->thread, SIG_IPI);
3680 qemu_cpu_kick(penv);
3681 penv = (CPUState *)penv->next_cpu;
3684 while (!all_vcpus_paused()) {
3685 qemu_cond_timedwait(&qemu_pause_cond, &qemu_global_mutex, 100);
3688 qemu_thread_signal(penv->thread, SIG_IPI);
3689 penv = (CPUState *)penv->next_cpu;
3694 static void resume_all_vcpus(void)
3696 CPUState *penv = first_cpu;
3701 qemu_thread_signal(penv->thread, SIG_IPI);
3702 qemu_cpu_kick(penv);
3703 penv = (CPUState *)penv->next_cpu;
3707 static void tcg_init_vcpu(void *_env)
3709 CPUState *env = _env;
3710 /* share a single thread for all cpus with TCG */
3711 if (!tcg_cpu_thread) {
3712 env->thread = qemu_mallocz(sizeof(QemuThread));
3713 env->halt_cond = qemu_mallocz(sizeof(QemuCond));
3714 qemu_cond_init(env->halt_cond);
3715 qemu_thread_create(env->thread, tcg_cpu_thread_fn, env);
3716 while (env->created == 0)
3717 qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
3718 tcg_cpu_thread = env->thread;
3719 tcg_halt_cond = env->halt_cond;
3721 env->thread = tcg_cpu_thread;
3722 env->halt_cond = tcg_halt_cond;
3726 static void kvm_start_vcpu(CPUState *env)
3728 env->thread = qemu_mallocz(sizeof(QemuThread));
3729 env->halt_cond = qemu_mallocz(sizeof(QemuCond));
3730 qemu_cond_init(env->halt_cond);
3731 qemu_thread_create(env->thread, kvm_cpu_thread_fn, env);
3732 while (env->created == 0)
3733 qemu_cond_timedwait(&qemu_cpu_cond, &qemu_global_mutex, 100);
3736 void qemu_init_vcpu(void *_env)
3738 CPUState *env = _env;
3740 env->nr_cores = smp_cores;
3741 env->nr_threads = smp_threads;
3743 kvm_start_vcpu(env);
3748 void qemu_notify_event(void)
3750 qemu_event_increment();
3753 void vm_stop(int reason)
3756 qemu_thread_self(&me);
3758 if (!qemu_thread_equal(&me, &io_thread)) {
3759 qemu_system_vmstop_request(reason);
3761 * FIXME: should not return to device code in case
3762 * vm_stop() has been requested.
3764 if (cpu_single_env) {
3765 cpu_exit(cpu_single_env);
3766 cpu_single_env->stop = 1;
3777 static void host_main_loop_wait(int *timeout)
3783 /* XXX: need to suppress polling by better using win32 events */
3785 for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
3786 ret |= pe->func(pe->opaque);
3790 WaitObjects *w = &wait_objects;
3792 ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
3793 if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
3794 if (w->func[ret - WAIT_OBJECT_0])
3795 w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
3797 /* Check for additional signaled events */
3798 for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
3800 /* Check if event is signaled */
3801 ret2 = WaitForSingleObject(w->events[i], 0);
3802 if(ret2 == WAIT_OBJECT_0) {
3804 w->func[i](w->opaque[i]);
3805 } else if (ret2 == WAIT_TIMEOUT) {
3807 err = GetLastError();
3808 fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
3811 } else if (ret == WAIT_TIMEOUT) {
3813 err = GetLastError();
3814 fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
3821 static void host_main_loop_wait(int *timeout)
3826 void main_loop_wait(int timeout)
3828 IOHandlerRecord *ioh;
3829 fd_set rfds, wfds, xfds;
3833 qemu_bh_update_timeout(&timeout);
3835 host_main_loop_wait(&timeout);
3837 /* poll any events */
3838 /* XXX: separate device handlers from system ones */
3843 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
3847 (!ioh->fd_read_poll ||
3848 ioh->fd_read_poll(ioh->opaque) != 0)) {
3849 FD_SET(ioh->fd, &rfds);
3853 if (ioh->fd_write) {
3854 FD_SET(ioh->fd, &wfds);
3860 tv.tv_sec = timeout / 1000;
3861 tv.tv_usec = (timeout % 1000) * 1000;
3863 slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
3865 qemu_mutex_unlock_iothread();
3866 ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
3867 qemu_mutex_lock_iothread();
3869 IOHandlerRecord **pioh;
3871 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
3872 if (!ioh->deleted && ioh->fd_read && FD_ISSET(ioh->fd, &rfds)) {
3873 ioh->fd_read(ioh->opaque);
3875 if (!ioh->deleted && ioh->fd_write && FD_ISSET(ioh->fd, &wfds)) {
3876 ioh->fd_write(ioh->opaque);
3880 /* remove deleted IO handlers */
3881 pioh = &first_io_handler;
3892 slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0));
3894 /* rearm timer, if not periodic */
3895 if (alarm_timer->expired) {
3896 alarm_timer->expired = 0;
3897 qemu_rearm_alarm_timer(alarm_timer);
3900 alarm_timer->pending = 0;
3902 /* vm time timers */
3904 if (!cur_cpu || likely(!(cur_cpu->singlestep_enabled & SSTEP_NOTIMER)))
3905 qemu_run_timers(&active_timers[QEMU_CLOCK_VIRTUAL],
3906 qemu_get_clock(vm_clock));
3909 /* real time timers */
3910 qemu_run_timers(&active_timers[QEMU_CLOCK_REALTIME],
3911 qemu_get_clock(rt_clock));
3913 qemu_run_timers(&active_timers[QEMU_CLOCK_HOST],
3914 qemu_get_clock(host_clock));
3916 /* Check bottom-halves last in case any of the earlier events triggered
3922 static int qemu_cpu_exec(CPUState *env)
3925 #ifdef CONFIG_PROFILER
3929 #ifdef CONFIG_PROFILER
3930 ti = profile_getclock();
3935 qemu_icount -= (env->icount_decr.u16.low + env->icount_extra);
3936 env->icount_decr.u16.low = 0;
3937 env->icount_extra = 0;
3938 count = qemu_next_deadline();
3939 count = (count + (1 << icount_time_shift) - 1)
3940 >> icount_time_shift;
3941 qemu_icount += count;
3942 decr = (count > 0xffff) ? 0xffff : count;
3944 env->icount_decr.u16.low = decr;
3945 env->icount_extra = count;
3947 ret = cpu_exec(env);
3948 #ifdef CONFIG_PROFILER
3949 qemu_time += profile_getclock() - ti;
3952 /* Fold pending instructions back into the
3953 instruction counter, and clear the interrupt flag. */
3954 qemu_icount -= (env->icount_decr.u16.low
3955 + env->icount_extra);
3956 env->icount_decr.u32 = 0;
3957 env->icount_extra = 0;
3962 static void tcg_cpu_exec(void)
3966 if (next_cpu == NULL)
3967 next_cpu = first_cpu;
3968 for (; next_cpu != NULL; next_cpu = next_cpu->next_cpu) {
3969 CPUState *env = cur_cpu = next_cpu;
3971 if (alarm_timer->pending)
3973 if (cpu_can_run(env))
3974 ret = qemu_cpu_exec(env);
3978 if (ret == EXCP_DEBUG) {
3979 gdb_set_stop_cpu(env);
3980 debug_requested = 1;
3986 static int cpu_has_work(CPUState *env)
3994 if (qemu_cpu_has_work(env))
3999 static int tcg_has_work(void)
4003 for (env = first_cpu; env != NULL; env = env->next_cpu)
4004 if (cpu_has_work(env))
4009 static int qemu_calculate_timeout(void)
4011 #ifndef CONFIG_IOTHREAD
4016 else if (tcg_has_work())
4018 else if (!use_icount)
4021 /* XXX: use timeout computed from timers */
4024 /* Advance virtual time to the next event. */
4025 if (use_icount == 1) {
4026 /* When not using an adaptive execution frequency
4027 we tend to get badly out of sync with real time,
4028 so just delay for a reasonable amount of time. */
4031 delta = cpu_get_icount() - cpu_get_clock();
4034 /* If virtual time is ahead of real time then just
4036 timeout = (delta / 1000000) + 1;
4038 /* Wait for either IO to occur or the next
4040 add = qemu_next_deadline();
4041 /* We advance the timer before checking for IO.
4042 Limit the amount we advance so that early IO
4043 activity won't get the guest too far ahead. */
4047 add = (add + (1 << icount_time_shift) - 1)
4048 >> icount_time_shift;
4050 timeout = delta / 1000000;
4057 #else /* CONFIG_IOTHREAD */
4062 static int vm_can_run(void)
4064 if (powerdown_requested)
4066 if (reset_requested)
4068 if (shutdown_requested)
4070 if (debug_requested)
4075 qemu_irq qemu_system_powerdown;
4077 static void main_loop(void)
4081 #ifdef CONFIG_IOTHREAD
4082 qemu_system_ready = 1;
4083 qemu_cond_broadcast(&qemu_system_cond);
4088 #ifdef CONFIG_PROFILER
4091 #ifndef CONFIG_IOTHREAD
4094 #ifdef CONFIG_PROFILER
4095 ti = profile_getclock();
4097 main_loop_wait(qemu_calculate_timeout());
4098 #ifdef CONFIG_PROFILER
4099 dev_time += profile_getclock() - ti;
4101 } while (vm_can_run());
4103 if (qemu_debug_requested()) {
4104 vm_stop(EXCP_DEBUG);
4106 if (qemu_shutdown_requested()) {
4107 monitor_protocol_event(QEVENT_SHUTDOWN, NULL);
4114 if (qemu_reset_requested()) {
4116 qemu_system_reset();
4119 if (qemu_powerdown_requested()) {
4120 monitor_protocol_event(QEVENT_POWERDOWN, NULL);
4121 qemu_irq_raise(qemu_system_powerdown);
4123 if ((r = qemu_vmstop_requested())) {
4130 static void version(void)
4132 printf("QEMU PC emulator version " QEMU_VERSION QEMU_PKGVERSION ", Copyright (c) 2003-2008 Fabrice Bellard\n");
4135 static void help(int exitcode)
4137 const char *options_help =
4138 #define DEF(option, opt_arg, opt_enum, opt_help) \
4140 #define DEFHEADING(text) stringify(text) "\n"
4141 #include "qemu-options.h"
4147 printf("usage: %s [options] [disk_image]\n"
4149 "'disk_image' is a raw hard image image for IDE hard disk 0\n"
4152 "During emulation, the following keys are useful:\n"
4153 "ctrl-alt-f toggle full screen\n"
4154 "ctrl-alt-n switch to virtual console 'n'\n"
4155 "ctrl-alt toggle mouse and keyboard grab\n"
4157 "When using -nographic, press 'ctrl-a h' to get some help.\n",
4163 #define HAS_ARG 0x0001
4166 #define DEF(option, opt_arg, opt_enum, opt_help) \
4168 #define DEFHEADING(text)
4169 #include "qemu-options.h"
4175 typedef struct QEMUOption {
4181 static const QEMUOption qemu_options[] = {
4182 { "h", 0, QEMU_OPTION_h },
4183 #define DEF(option, opt_arg, opt_enum, opt_help) \
4184 { option, opt_arg, opt_enum },
4185 #define DEFHEADING(text)
4186 #include "qemu-options.h"
4194 struct soundhw soundhw[] = {
4195 #ifdef HAS_AUDIO_CHOICE
4196 #if defined(TARGET_I386) || defined(TARGET_MIPS)
4202 { .init_isa = pcspk_audio_init }
4209 "Creative Sound Blaster 16",
4212 { .init_isa = SB16_init }
4216 #ifdef CONFIG_CS4231A
4222 { .init_isa = cs4231a_init }
4230 "Yamaha YMF262 (OPL3)",
4232 "Yamaha YM3812 (OPL2)",
4236 { .init_isa = Adlib_init }
4243 "Gravis Ultrasound GF1",
4246 { .init_isa = GUS_init }
4253 "Intel 82801AA AC97 Audio",
4256 { .init_pci = ac97_init }
4260 #ifdef CONFIG_ES1370
4263 "ENSONIQ AudioPCI ES1370",
4266 { .init_pci = es1370_init }
4270 #endif /* HAS_AUDIO_CHOICE */
4272 { NULL, NULL, 0, 0, { NULL } }
4275 static void select_soundhw (const char *optarg)
4279 if (*optarg == '?') {
4282 printf ("Valid sound card names (comma separated):\n");
4283 for (c = soundhw; c->name; ++c) {
4284 printf ("%-11s %s\n", c->name, c->descr);
4286 printf ("\n-soundhw all will enable all of the above\n");
4287 exit (*optarg != '?');
4295 if (!strcmp (optarg, "all")) {
4296 for (c = soundhw; c->name; ++c) {
4304 e = strchr (p, ',');
4305 l = !e ? strlen (p) : (size_t) (e - p);
4307 for (c = soundhw; c->name; ++c) {
4308 if (!strncmp (c->name, p, l) && !c->name[l]) {
4317 "Unknown sound card name (too big to show)\n");
4320 fprintf (stderr, "Unknown sound card name `%.*s'\n",
4325 p += l + (e != NULL);
4329 goto show_valid_cards;
4334 static void select_vgahw (const char *p)
4339 vga_interface_type = VGA_NONE;
4340 if (strstart(p, "std", &opts)) {
4341 vga_interface_type = VGA_STD;
4342 } else if (strstart(p, "cirrus", &opts)) {
4343 vga_interface_type = VGA_CIRRUS;
4344 } else if (strstart(p, "vmware", &opts)) {
4345 vga_interface_type = VGA_VMWARE;
4346 } else if (strstart(p, "xenfb", &opts)) {
4347 vga_interface_type = VGA_XENFB;
4348 } else if (!strstart(p, "none", &opts)) {
4350 fprintf(stderr, "Unknown vga type: %s\n", p);
4354 const char *nextopt;
4356 if (strstart(opts, ",retrace=", &nextopt)) {
4358 if (strstart(opts, "dumb", &nextopt))
4359 vga_retrace_method = VGA_RETRACE_DUMB;
4360 else if (strstart(opts, "precise", &nextopt))
4361 vga_retrace_method = VGA_RETRACE_PRECISE;
4362 else goto invalid_vga;
4363 } else goto invalid_vga;
4369 static int balloon_parse(const char *arg)
4373 if (strcmp(arg, "none") == 0) {
4377 if (!strncmp(arg, "virtio", 6)) {
4378 if (arg[6] == ',') {
4379 /* have params -> parse them */
4380 opts = qemu_opts_parse(&qemu_device_opts, arg+7, 0);
4384 /* create empty opts */
4385 opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
4387 qemu_opt_set(opts, "driver", "virtio-balloon-pci");
4396 static BOOL WINAPI qemu_ctrl_handler(DWORD type)
4398 exit(STATUS_CONTROL_C_EXIT);
4403 int qemu_uuid_parse(const char *str, uint8_t *uuid)
4407 if(strlen(str) != 36)
4410 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
4411 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
4412 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14], &uuid[15]);
4418 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
4426 static void termsig_handler(int signal)
4428 qemu_system_shutdown_request();
4431 static void sigchld_handler(int signal)
4433 waitpid(-1, NULL, WNOHANG);
4436 static void sighandler_setup(void)
4438 struct sigaction act;
4440 memset(&act, 0, sizeof(act));
4441 act.sa_handler = termsig_handler;
4442 sigaction(SIGINT, &act, NULL);
4443 sigaction(SIGHUP, &act, NULL);
4444 sigaction(SIGTERM, &act, NULL);
4446 act.sa_handler = sigchld_handler;
4447 act.sa_flags = SA_NOCLDSTOP;
4448 sigaction(SIGCHLD, &act, NULL);
4454 /* Look for support files in the same directory as the executable. */
4455 static char *find_datadir(const char *argv0)
4461 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
4468 while (p != buf && *p != '\\')
4471 if (access(buf, R_OK) == 0) {
4472 return qemu_strdup(buf);
4478 /* Find a likely location for support files using the location of the binary.
4479 For installed binaries this will be "$bindir/../share/qemu". When
4480 running from the build tree this will be "$bindir/../pc-bios". */
4481 #define SHARE_SUFFIX "/share/qemu"
4482 #define BUILD_SUFFIX "/pc-bios"
4483 static char *find_datadir(const char *argv0)
4491 #if defined(__linux__)
4494 len = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
4500 #elif defined(__FreeBSD__)
4503 len = readlink("/proc/curproc/file", buf, sizeof(buf) - 1);
4510 /* If we don't have any way of figuring out the actual executable
4511 location then try argv[0]. */
4513 p = realpath(argv0, buf);
4521 max_len = strlen(dir) +
4522 MAX(strlen(SHARE_SUFFIX), strlen(BUILD_SUFFIX)) + 1;
4523 res = qemu_mallocz(max_len);
4524 snprintf(res, max_len, "%s%s", dir, SHARE_SUFFIX);
4525 if (access(res, R_OK)) {
4526 snprintf(res, max_len, "%s%s", dir, BUILD_SUFFIX);
4527 if (access(res, R_OK)) {
4539 char *qemu_find_file(int type, const char *name)
4545 /* If name contains path separators then try it as a straight path. */
4546 if ((strchr(name, '/') || strchr(name, '\\'))
4547 && access(name, R_OK) == 0) {
4548 return qemu_strdup(name);
4551 case QEMU_FILE_TYPE_BIOS:
4554 case QEMU_FILE_TYPE_KEYMAP:
4555 subdir = "keymaps/";
4560 len = strlen(data_dir) + strlen(name) + strlen(subdir) + 2;
4561 buf = qemu_mallocz(len);
4562 snprintf(buf, len, "%s/%s%s", data_dir, subdir, name);
4563 if (access(buf, R_OK)) {
4570 static int device_help_func(QemuOpts *opts, void *opaque)
4572 return qdev_device_help(opts);
4575 static int device_init_func(QemuOpts *opts, void *opaque)
4579 dev = qdev_device_add(opts);
4585 static int chardev_init_func(QemuOpts *opts, void *opaque)
4587 CharDriverState *chr;
4589 chr = qemu_chr_open_opts(opts, NULL);
4595 static int mon_init_func(QemuOpts *opts, void *opaque)
4597 CharDriverState *chr;
4598 const char *chardev;
4602 mode = qemu_opt_get(opts, "mode");
4606 if (strcmp(mode, "readline") == 0) {
4607 flags = MONITOR_USE_READLINE;
4608 } else if (strcmp(mode, "control") == 0) {
4609 flags = MONITOR_USE_CONTROL;
4611 fprintf(stderr, "unknown monitor mode \"%s\"\n", mode);
4615 if (qemu_opt_get_bool(opts, "default", 0))
4616 flags |= MONITOR_IS_DEFAULT;
4618 chardev = qemu_opt_get(opts, "chardev");
4619 chr = qemu_chr_find(chardev);
4621 fprintf(stderr, "chardev \"%s\" not found\n", chardev);
4625 monitor_init(chr, flags);
4629 static void monitor_parse(const char *optarg, const char *mode)
4631 static int monitor_device_index = 0;
4637 if (strstart(optarg, "chardev:", &p)) {
4638 snprintf(label, sizeof(label), "%s", p);
4640 if (monitor_device_index) {
4641 snprintf(label, sizeof(label), "monitor%d",
4642 monitor_device_index);
4644 snprintf(label, sizeof(label), "monitor");
4647 opts = qemu_chr_parse_compat(label, optarg);
4649 fprintf(stderr, "parse error: %s\n", optarg);
4654 opts = qemu_opts_create(&qemu_mon_opts, label, 1);
4656 fprintf(stderr, "duplicate chardev: %s\n", label);
4659 qemu_opt_set(opts, "mode", mode);
4660 qemu_opt_set(opts, "chardev", label);
4662 qemu_opt_set(opts, "default", "on");
4663 monitor_device_index++;
4666 struct device_config {
4668 DEV_USB, /* -usbdevice */
4670 DEV_SERIAL, /* -serial */
4671 DEV_PARALLEL, /* -parallel */
4672 DEV_VIRTCON, /* -virtioconsole */
4673 DEV_DEBUGCON, /* -debugcon */
4675 const char *cmdline;
4676 QTAILQ_ENTRY(device_config) next;
4678 QTAILQ_HEAD(, device_config) device_configs = QTAILQ_HEAD_INITIALIZER(device_configs);
4680 static void add_device_config(int type, const char *cmdline)
4682 struct device_config *conf;
4684 conf = qemu_mallocz(sizeof(*conf));
4686 conf->cmdline = cmdline;
4687 QTAILQ_INSERT_TAIL(&device_configs, conf, next);
4690 static int foreach_device_config(int type, int (*func)(const char *cmdline))
4692 struct device_config *conf;
4695 QTAILQ_FOREACH(conf, &device_configs, next) {
4696 if (conf->type != type)
4698 rc = func(conf->cmdline);
4705 static int serial_parse(const char *devname)
4707 static int index = 0;
4710 if (strcmp(devname, "none") == 0)
4712 if (index == MAX_SERIAL_PORTS) {
4713 fprintf(stderr, "qemu: too many serial ports\n");
4716 snprintf(label, sizeof(label), "serial%d", index);
4717 serial_hds[index] = qemu_chr_open(label, devname, NULL);
4718 if (!serial_hds[index]) {
4719 fprintf(stderr, "qemu: could not open serial device '%s': %s\n",
4720 devname, strerror(errno));
4727 static int parallel_parse(const char *devname)
4729 static int index = 0;
4732 if (strcmp(devname, "none") == 0)
4734 if (index == MAX_PARALLEL_PORTS) {
4735 fprintf(stderr, "qemu: too many parallel ports\n");
4738 snprintf(label, sizeof(label), "parallel%d", index);
4739 parallel_hds[index] = qemu_chr_open(label, devname, NULL);
4740 if (!parallel_hds[index]) {
4741 fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
4742 devname, strerror(errno));
4749 static int virtcon_parse(const char *devname)
4751 static int index = 0;
4753 QemuOpts *bus_opts, *dev_opts;
4755 if (strcmp(devname, "none") == 0)
4757 if (index == MAX_VIRTIO_CONSOLES) {
4758 fprintf(stderr, "qemu: too many virtio consoles\n");
4762 bus_opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
4763 qemu_opt_set(bus_opts, "driver", "virtio-serial");
4765 dev_opts = qemu_opts_create(&qemu_device_opts, NULL, 0);
4766 qemu_opt_set(dev_opts, "driver", "virtconsole");
4768 snprintf(label, sizeof(label), "virtcon%d", index);
4769 virtcon_hds[index] = qemu_chr_open(label, devname, NULL);
4770 if (!virtcon_hds[index]) {
4771 fprintf(stderr, "qemu: could not open virtio console '%s': %s\n",
4772 devname, strerror(errno));
4775 qemu_opt_set(dev_opts, "chardev", label);
4781 static int debugcon_parse(const char *devname)
4785 if (!qemu_chr_open("debugcon", devname, NULL)) {
4788 opts = qemu_opts_create(&qemu_device_opts, "debugcon", 1);
4790 fprintf(stderr, "qemu: already have a debugcon device\n");
4793 qemu_opt_set(opts, "driver", "isa-debugcon");
4794 qemu_opt_set(opts, "chardev", "debugcon");
4798 static const QEMUOption *lookup_opt(int argc, char **argv,
4799 const char **poptarg, int *poptind)
4801 const QEMUOption *popt;
4802 int optind = *poptind;
4803 char *r = argv[optind];
4806 loc_set_cmdline(argv, optind, 1);
4808 /* Treat --foo the same as -foo. */
4811 popt = qemu_options;
4814 error_report("invalid option");
4817 if (!strcmp(popt->name, r + 1))
4821 if (popt->flags & HAS_ARG) {
4822 if (optind >= argc) {
4823 error_report("requires an argument");
4826 optarg = argv[optind++];
4827 loc_set_cmdline(argv, optind - 2, 2);
4838 int main(int argc, char **argv, char **envp)
4840 const char *gdbstub_dev = NULL;
4841 uint32_t boot_devices_bitmap = 0;
4843 int snapshot, linux_boot, net_boot;
4844 const char *initrd_filename;
4845 const char *kernel_filename, *kernel_cmdline;
4846 char boot_devices[33] = "cad"; /* default to HD->floppy->CD-ROM */
4848 DisplayChangeListener *dcl;
4849 int cyls, heads, secs, translation;
4850 QemuOpts *hda_opts = NULL, *opts;
4853 const char *loadvm = NULL;
4854 QEMUMachine *machine;
4855 const char *cpu_model;
4860 const char *pid_file = NULL;
4861 const char *incoming = NULL;
4864 struct passwd *pwd = NULL;
4865 const char *chroot_dir = NULL;
4866 const char *run_as = NULL;
4869 int show_vnc_port = 0;
4872 error_set_progname(argv[0]);
4876 qemu_cache_utils_init(envp);
4878 QLIST_INIT (&vm_change_state_head);
4881 struct sigaction act;
4882 sigfillset(&act.sa_mask);
4884 act.sa_handler = SIG_IGN;
4885 sigaction(SIGPIPE, &act, NULL);
4888 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
4889 /* Note: cpu_interrupt() is currently not SMP safe, so we force
4890 QEMU to run on a single CPU */
4895 h = GetCurrentProcess();
4896 if (GetProcessAffinityMask(h, &mask, &smask)) {
4897 for(i = 0; i < 32; i++) {
4898 if (mask & (1 << i))
4903 SetProcessAffinityMask(h, mask);
4909 module_call_init(MODULE_INIT_MACHINE);
4910 machine = find_default_machine();
4912 initrd_filename = NULL;
4915 kernel_filename = NULL;
4916 kernel_cmdline = "";
4917 cyls = heads = secs = 0;
4918 translation = BIOS_ATA_TRANSLATION_AUTO;
4920 for (i = 0; i < MAX_NODES; i++) {
4922 node_cpumask[i] = 0;
4931 /* first pass of option parsing */
4933 while (optind < argc) {
4934 if (argv[optind][0] != '-') {
4939 const QEMUOption *popt;
4941 popt = lookup_opt(argc, argv, &optarg, &optind);
4942 switch (popt->index) {
4943 case QEMU_OPTION_nodefconfig:
4954 fname = CONFIG_QEMU_CONFDIR "/qemu.conf";
4955 fp = fopen(fname, "r");
4957 if (qemu_config_parse(fp, fname) != 0) {
4963 fname = CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf";
4964 fp = fopen(fname, "r");
4966 if (qemu_config_parse(fp, fname) != 0) {
4972 #if defined(cpudef_setup)
4973 cpudef_setup(); /* parse cpu definitions in target config file */
4976 /* second pass of option parsing */
4981 if (argv[optind][0] != '-') {
4982 hda_opts = drive_add(argv[optind++], HD_ALIAS, 0);
4984 const QEMUOption *popt;
4986 popt = lookup_opt(argc, argv, &optarg, &optind);
4987 switch(popt->index) {
4989 machine = find_machine(optarg);
4992 printf("Supported machines are:\n");
4993 for(m = first_machine; m != NULL; m = m->next) {
4995 printf("%-10s %s (alias of %s)\n",
4996 m->alias, m->desc, m->name);
4997 printf("%-10s %s%s\n",
4999 m->is_default ? " (default)" : "");
5001 exit(*optarg != '?');
5004 case QEMU_OPTION_cpu:
5005 /* hw initialization will check this */
5006 if (*optarg == '?') {
5007 /* XXX: implement xxx_cpu_list for targets that still miss it */
5008 #if defined(cpu_list_id)
5009 cpu_list_id(stdout, &fprintf, optarg);
5010 #elif defined(cpu_list)
5011 cpu_list(stdout, &fprintf); /* deprecated */
5018 case QEMU_OPTION_initrd:
5019 initrd_filename = optarg;
5021 case QEMU_OPTION_hda:
5023 hda_opts = drive_add(optarg, HD_ALIAS, 0);
5025 hda_opts = drive_add(optarg, HD_ALIAS
5026 ",cyls=%d,heads=%d,secs=%d%s",
5027 0, cyls, heads, secs,
5028 translation == BIOS_ATA_TRANSLATION_LBA ?
5030 translation == BIOS_ATA_TRANSLATION_NONE ?
5031 ",trans=none" : "");
5033 case QEMU_OPTION_hdb:
5034 case QEMU_OPTION_hdc:
5035 case QEMU_OPTION_hdd:
5036 drive_add(optarg, HD_ALIAS, popt->index - QEMU_OPTION_hda);
5038 case QEMU_OPTION_drive:
5039 drive_add(NULL, "%s", optarg);
5041 case QEMU_OPTION_set:
5042 if (qemu_set_option(optarg) != 0)
5045 case QEMU_OPTION_global:
5046 if (qemu_global_option(optarg) != 0)
5049 case QEMU_OPTION_mtdblock:
5050 drive_add(optarg, MTD_ALIAS);
5052 case QEMU_OPTION_sd:
5053 drive_add(optarg, SD_ALIAS);
5055 case QEMU_OPTION_pflash:
5056 drive_add(optarg, PFLASH_ALIAS);
5058 case QEMU_OPTION_snapshot:
5061 case QEMU_OPTION_hdachs:
5065 cyls = strtol(p, (char **)&p, 0);
5066 if (cyls < 1 || cyls > 16383)
5071 heads = strtol(p, (char **)&p, 0);
5072 if (heads < 1 || heads > 16)
5077 secs = strtol(p, (char **)&p, 0);
5078 if (secs < 1 || secs > 63)
5082 if (!strcmp(p, "none"))
5083 translation = BIOS_ATA_TRANSLATION_NONE;
5084 else if (!strcmp(p, "lba"))
5085 translation = BIOS_ATA_TRANSLATION_LBA;
5086 else if (!strcmp(p, "auto"))
5087 translation = BIOS_ATA_TRANSLATION_AUTO;
5090 } else if (*p != '\0') {
5092 fprintf(stderr, "qemu: invalid physical CHS format\n");
5095 if (hda_opts != NULL) {
5097 snprintf(num, sizeof(num), "%d", cyls);
5098 qemu_opt_set(hda_opts, "cyls", num);
5099 snprintf(num, sizeof(num), "%d", heads);
5100 qemu_opt_set(hda_opts, "heads", num);
5101 snprintf(num, sizeof(num), "%d", secs);
5102 qemu_opt_set(hda_opts, "secs", num);
5103 if (translation == BIOS_ATA_TRANSLATION_LBA)
5104 qemu_opt_set(hda_opts, "trans", "lba");
5105 if (translation == BIOS_ATA_TRANSLATION_NONE)
5106 qemu_opt_set(hda_opts, "trans", "none");
5110 case QEMU_OPTION_numa:
5111 if (nb_numa_nodes >= MAX_NODES) {
5112 fprintf(stderr, "qemu: too many NUMA nodes\n");
5117 case QEMU_OPTION_nographic:
5118 display_type = DT_NOGRAPHIC;
5120 #ifdef CONFIG_CURSES
5121 case QEMU_OPTION_curses:
5122 display_type = DT_CURSES;
5125 case QEMU_OPTION_portrait:
5128 case QEMU_OPTION_kernel:
5129 kernel_filename = optarg;
5131 case QEMU_OPTION_append:
5132 kernel_cmdline = optarg;
5134 case QEMU_OPTION_cdrom:
5135 drive_add(optarg, CDROM_ALIAS);
5137 case QEMU_OPTION_boot:
5139 static const char * const params[] = {
5140 "order", "once", "menu", NULL
5142 char buf[sizeof(boot_devices)];
5143 char *standard_boot_devices;
5146 if (!strchr(optarg, '=')) {
5148 pstrcpy(buf, sizeof(buf), optarg);
5149 } else if (check_params(buf, sizeof(buf), params, optarg) < 0) {
5151 "qemu: unknown boot parameter '%s' in '%s'\n",
5157 get_param_value(buf, sizeof(buf), "order", optarg)) {
5158 boot_devices_bitmap = parse_bootdevices(buf);
5159 pstrcpy(boot_devices, sizeof(boot_devices), buf);
5162 if (get_param_value(buf, sizeof(buf),
5164 boot_devices_bitmap |= parse_bootdevices(buf);
5165 standard_boot_devices = qemu_strdup(boot_devices);
5166 pstrcpy(boot_devices, sizeof(boot_devices), buf);
5167 qemu_register_reset(restore_boot_devices,
5168 standard_boot_devices);
5170 if (get_param_value(buf, sizeof(buf),
5172 if (!strcmp(buf, "on")) {
5174 } else if (!strcmp(buf, "off")) {
5178 "qemu: invalid option value '%s'\n",
5186 case QEMU_OPTION_fda:
5187 case QEMU_OPTION_fdb:
5188 drive_add(optarg, FD_ALIAS, popt->index - QEMU_OPTION_fda);
5191 case QEMU_OPTION_no_fd_bootchk:
5195 case QEMU_OPTION_netdev:
5196 if (net_client_parse(&qemu_netdev_opts, optarg) == -1) {
5200 case QEMU_OPTION_net:
5201 if (net_client_parse(&qemu_net_opts, optarg) == -1) {
5206 case QEMU_OPTION_tftp:
5207 legacy_tftp_prefix = optarg;
5209 case QEMU_OPTION_bootp:
5210 legacy_bootp_filename = optarg;
5213 case QEMU_OPTION_smb:
5214 if (net_slirp_smb(optarg) < 0)
5218 case QEMU_OPTION_redir:
5219 if (net_slirp_redir(optarg) < 0)
5223 case QEMU_OPTION_bt:
5224 add_device_config(DEV_BT, optarg);
5227 case QEMU_OPTION_audio_help:
5231 case QEMU_OPTION_soundhw:
5232 select_soundhw (optarg);
5238 case QEMU_OPTION_version:
5242 case QEMU_OPTION_m: {
5246 value = strtoul(optarg, &ptr, 10);
5248 case 0: case 'M': case 'm':
5255 fprintf(stderr, "qemu: invalid ram size: %s\n", optarg);
5259 /* On 32-bit hosts, QEMU is limited by virtual address space */
5260 if (value > (2047 << 20) && HOST_LONG_BITS == 32) {
5261 fprintf(stderr, "qemu: at most 2047 MB RAM can be simulated\n");
5264 if (value != (uint64_t)(ram_addr_t)value) {
5265 fprintf(stderr, "qemu: ram size too large\n");
5271 case QEMU_OPTION_mempath:
5275 case QEMU_OPTION_mem_prealloc:
5282 const CPULogItem *item;
5284 mask = cpu_str_to_log_mask(optarg);
5286 printf("Log items (comma separated):\n");
5287 for(item = cpu_log_items; item->mask != 0; item++) {
5288 printf("%-10s %s\n", item->name, item->help);
5296 gdbstub_dev = "tcp::" DEFAULT_GDBSTUB_PORT;
5298 case QEMU_OPTION_gdb:
5299 gdbstub_dev = optarg;
5304 case QEMU_OPTION_bios:
5307 case QEMU_OPTION_singlestep:
5314 keyboard_layout = optarg;
5316 case QEMU_OPTION_localtime:
5319 case QEMU_OPTION_vga:
5320 select_vgahw (optarg);
5322 #if defined(TARGET_PPC) || defined(TARGET_SPARC)
5328 w = strtol(p, (char **)&p, 10);
5331 fprintf(stderr, "qemu: invalid resolution or depth\n");
5337 h = strtol(p, (char **)&p, 10);
5342 depth = strtol(p, (char **)&p, 10);
5343 if (depth != 8 && depth != 15 && depth != 16 &&
5344 depth != 24 && depth != 32)
5346 } else if (*p == '\0') {
5347 depth = graphic_depth;
5354 graphic_depth = depth;
5358 case QEMU_OPTION_echr:
5361 term_escape_char = strtol(optarg, &r, 0);
5363 printf("Bad argument to echr\n");
5366 case QEMU_OPTION_monitor:
5367 monitor_parse(optarg, "readline");
5368 default_monitor = 0;
5370 case QEMU_OPTION_qmp:
5371 monitor_parse(optarg, "control");
5372 default_monitor = 0;
5374 case QEMU_OPTION_mon:
5375 opts = qemu_opts_parse(&qemu_mon_opts, optarg, 1);
5377 fprintf(stderr, "parse error: %s\n", optarg);
5380 default_monitor = 0;
5382 case QEMU_OPTION_chardev:
5383 opts = qemu_opts_parse(&qemu_chardev_opts, optarg, 1);
5385 fprintf(stderr, "parse error: %s\n", optarg);
5389 case QEMU_OPTION_serial:
5390 add_device_config(DEV_SERIAL, optarg);
5392 if (strncmp(optarg, "mon:", 4) == 0) {
5393 default_monitor = 0;
5396 case QEMU_OPTION_watchdog:
5399 "qemu: only one watchdog option may be given\n");
5404 case QEMU_OPTION_watchdog_action:
5405 if (select_watchdog_action(optarg) == -1) {
5406 fprintf(stderr, "Unknown -watchdog-action parameter\n");
5410 case QEMU_OPTION_virtiocon:
5411 add_device_config(DEV_VIRTCON, optarg);
5412 default_virtcon = 0;
5413 if (strncmp(optarg, "mon:", 4) == 0) {
5414 default_monitor = 0;
5417 case QEMU_OPTION_parallel:
5418 add_device_config(DEV_PARALLEL, optarg);
5419 default_parallel = 0;
5420 if (strncmp(optarg, "mon:", 4) == 0) {
5421 default_monitor = 0;
5424 case QEMU_OPTION_debugcon:
5425 add_device_config(DEV_DEBUGCON, optarg);
5427 case QEMU_OPTION_loadvm:
5430 case QEMU_OPTION_full_screen:
5434 case QEMU_OPTION_no_frame:
5437 case QEMU_OPTION_alt_grab:
5440 case QEMU_OPTION_ctrl_grab:
5443 case QEMU_OPTION_no_quit:
5446 case QEMU_OPTION_sdl:
5447 display_type = DT_SDL;
5450 case QEMU_OPTION_pidfile:
5454 case QEMU_OPTION_win2k_hack:
5455 win2k_install_hack = 1;
5457 case QEMU_OPTION_rtc_td_hack:
5460 case QEMU_OPTION_acpitable:
5461 if(acpi_table_add(optarg) < 0) {
5462 fprintf(stderr, "Wrong acpi table provided\n");
5466 case QEMU_OPTION_smbios:
5467 if(smbios_entry_add(optarg) < 0) {
5468 fprintf(stderr, "Wrong smbios provided\n");
5474 case QEMU_OPTION_enable_kvm:
5478 case QEMU_OPTION_usb:
5481 case QEMU_OPTION_usbdevice:
5483 add_device_config(DEV_USB, optarg);
5485 case QEMU_OPTION_device:
5486 if (!qemu_opts_parse(&qemu_device_opts, optarg, 1)) {
5490 case QEMU_OPTION_smp:
5493 fprintf(stderr, "Invalid number of CPUs\n");
5496 if (max_cpus < smp_cpus) {
5497 fprintf(stderr, "maxcpus must be equal to or greater than "
5501 if (max_cpus > 255) {
5502 fprintf(stderr, "Unsupported number of maxcpus\n");
5506 case QEMU_OPTION_vnc:
5507 display_type = DT_VNC;
5508 vnc_display = optarg;
5511 case QEMU_OPTION_no_acpi:
5514 case QEMU_OPTION_no_hpet:
5517 case QEMU_OPTION_balloon:
5518 if (balloon_parse(optarg) < 0) {
5519 fprintf(stderr, "Unknown -balloon argument %s\n", optarg);
5524 case QEMU_OPTION_no_reboot:
5527 case QEMU_OPTION_no_shutdown:
5530 case QEMU_OPTION_show_cursor:
5533 case QEMU_OPTION_uuid:
5534 if(qemu_uuid_parse(optarg, qemu_uuid) < 0) {
5535 fprintf(stderr, "Fail to parse UUID string."
5536 " Wrong format.\n");
5541 case QEMU_OPTION_daemonize:
5545 case QEMU_OPTION_option_rom:
5546 if (nb_option_roms >= MAX_OPTION_ROMS) {
5547 fprintf(stderr, "Too many option ROMs\n");
5550 option_rom[nb_option_roms] = optarg;
5553 #if defined(TARGET_ARM) || defined(TARGET_M68K)
5554 case QEMU_OPTION_semihosting:
5555 semihosting_enabled = 1;
5558 case QEMU_OPTION_name:
5559 qemu_name = qemu_strdup(optarg);
5561 char *p = strchr(qemu_name, ',');
5564 if (strncmp(p, "process=", 8)) {
5565 fprintf(stderr, "Unknown subargument %s to -name", p);
5573 #if defined(TARGET_SPARC) || defined(TARGET_PPC)
5574 case QEMU_OPTION_prom_env:
5575 if (nb_prom_envs >= MAX_PROM_ENVS) {
5576 fprintf(stderr, "Too many prom variables\n");
5579 prom_envs[nb_prom_envs] = optarg;
5584 case QEMU_OPTION_old_param:
5588 case QEMU_OPTION_clock:
5589 configure_alarms(optarg);
5591 case QEMU_OPTION_startdate:
5592 configure_rtc_date_offset(optarg, 1);
5594 case QEMU_OPTION_rtc:
5595 opts = qemu_opts_parse(&qemu_rtc_opts, optarg, 0);
5597 fprintf(stderr, "parse error: %s\n", optarg);
5600 configure_rtc(opts);
5602 case QEMU_OPTION_tb_size:
5603 tb_size = strtol(optarg, NULL, 0);
5607 case QEMU_OPTION_icount:
5609 if (strcmp(optarg, "auto") == 0) {
5610 icount_time_shift = -1;
5612 icount_time_shift = strtol(optarg, NULL, 0);
5615 case QEMU_OPTION_incoming:
5618 case QEMU_OPTION_nodefaults:
5620 default_parallel = 0;
5621 default_virtcon = 0;
5622 default_monitor = 0;
5630 case QEMU_OPTION_chroot:
5631 chroot_dir = optarg;
5633 case QEMU_OPTION_runas:
5638 case QEMU_OPTION_xen_domid:
5639 xen_domid = atoi(optarg);
5641 case QEMU_OPTION_xen_create:
5642 xen_mode = XEN_CREATE;
5644 case QEMU_OPTION_xen_attach:
5645 xen_mode = XEN_ATTACH;
5648 case QEMU_OPTION_readconfig:
5651 fp = fopen(optarg, "r");
5653 fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
5656 if (qemu_config_parse(fp, optarg) != 0) {
5662 case QEMU_OPTION_writeconfig:
5665 if (strcmp(optarg, "-") == 0) {
5668 fp = fopen(optarg, "w");
5670 fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
5674 qemu_config_write(fp);
5683 /* If no data_dir is specified then try to find it relative to the
5686 data_dir = find_datadir(argv[0]);
5688 /* If all else fails use the install patch specified when building. */
5690 data_dir = CONFIG_QEMU_SHAREDIR;
5694 * Default to max_cpus = smp_cpus, in case the user doesn't
5695 * specify a max_cpus value.
5698 max_cpus = smp_cpus;
5700 machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */
5701 if (smp_cpus > machine->max_cpus) {
5702 fprintf(stderr, "Number of SMP cpus requested (%d), exceeds max cpus "
5703 "supported by machine `%s' (%d)\n", smp_cpus, machine->name,
5708 qemu_opts_foreach(&qemu_device_opts, default_driver_check, NULL, 0);
5709 qemu_opts_foreach(&qemu_global_opts, default_driver_check, NULL, 0);
5711 if (machine->no_serial) {
5714 if (machine->no_parallel) {
5715 default_parallel = 0;
5717 if (!machine->use_virtcon) {
5718 default_virtcon = 0;
5720 if (machine->no_vga) {
5723 if (machine->no_floppy) {
5726 if (machine->no_cdrom) {
5729 if (machine->no_sdcard) {
5733 if (display_type == DT_NOGRAPHIC) {
5734 if (default_parallel)
5735 add_device_config(DEV_PARALLEL, "null");
5736 if (default_serial && default_monitor) {
5737 add_device_config(DEV_SERIAL, "mon:stdio");
5738 } else if (default_virtcon && default_monitor) {
5739 add_device_config(DEV_VIRTCON, "mon:stdio");
5742 add_device_config(DEV_SERIAL, "stdio");
5743 if (default_virtcon)
5744 add_device_config(DEV_VIRTCON, "stdio");
5745 if (default_monitor)
5746 monitor_parse("stdio", "readline");
5750 add_device_config(DEV_SERIAL, "vc:80Cx24C");
5751 if (default_parallel)
5752 add_device_config(DEV_PARALLEL, "vc:80Cx24C");
5753 if (default_monitor)
5754 monitor_parse("vc:80Cx24C", "readline");
5755 if (default_virtcon)
5756 add_device_config(DEV_VIRTCON, "vc:80Cx24C");
5759 vga_interface_type = VGA_CIRRUS;
5761 if (qemu_opts_foreach(&qemu_chardev_opts, chardev_init_func, NULL, 1) != 0)
5768 if (pipe(fds) == -1)
5779 len = read(fds[0], &status, 1);
5780 if (len == -1 && (errno == EINTR))
5785 else if (status == 1) {
5786 fprintf(stderr, "Could not acquire pidfile: %s\n", strerror(errno));
5794 qemu_set_cloexec(fds[1]);
5806 signal(SIGTSTP, SIG_IGN);
5807 signal(SIGTTOU, SIG_IGN);
5808 signal(SIGTTIN, SIG_IGN);
5812 if (pid_file && qemu_create_pidfile(pid_file) != 0) {
5816 if (write(fds[1], &status, 1) != 1) {
5817 perror("daemonize. Writing to pipe\n");
5821 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
5825 if (kvm_enabled()) {
5828 ret = kvm_init(smp_cpus);
5830 fprintf(stderr, "failed to initialize KVM\n");
5835 if (qemu_init_main_loop()) {
5836 fprintf(stderr, "qemu_init_main_loop failed\n");
5839 linux_boot = (kernel_filename != NULL);
5841 if (!linux_boot && *kernel_cmdline != '\0') {
5842 fprintf(stderr, "-append only allowed with -kernel option\n");
5846 if (!linux_boot && initrd_filename != NULL) {
5847 fprintf(stderr, "-initrd only allowed with -kernel option\n");
5852 /* Win32 doesn't support line-buffering and requires size >= 2 */
5853 setvbuf(stdout, NULL, _IOLBF, 0);
5856 if (init_timer_alarm() < 0) {
5857 fprintf(stderr, "could not initialize alarm timer\n");
5860 if (use_icount && icount_time_shift < 0) {
5862 /* 125MIPS seems a reasonable initial guess at the guest speed.
5863 It will be corrected fairly quickly anyway. */
5864 icount_time_shift = 3;
5865 init_icount_adjust();
5872 if (net_init_clients() < 0) {
5876 net_boot = (boot_devices_bitmap >> ('n' - 'a')) & 0xF;
5877 net_set_boot_mask(net_boot);
5879 /* init the bluetooth world */
5880 if (foreach_device_config(DEV_BT, bt_parse))
5883 /* init the memory */
5885 ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
5887 /* init the dynamic translator */
5888 cpu_exec_init_all(tb_size * 1024 * 1024);
5890 bdrv_init_with_whitelist();
5894 if (default_cdrom) {
5895 /* we always create the cdrom drive, even if no disk is there */
5896 drive_add(NULL, CDROM_ALIAS);
5899 if (default_floppy) {
5900 /* we always create at least one floppy */
5901 drive_add(NULL, FD_ALIAS, 0);
5904 if (default_sdcard) {
5905 /* we always create one sd slot, even if no card is in it */
5906 drive_add(NULL, SD_ALIAS);
5909 /* open the virtual block devices */
5911 qemu_opts_foreach(&qemu_drive_opts, drive_enable_snapshot, NULL, 0);
5912 if (qemu_opts_foreach(&qemu_drive_opts, drive_init_func, machine, 1) != 0)
5915 vmstate_register(0, &vmstate_timers ,&timers_state);
5916 register_savevm_live("ram", 0, 3, NULL, ram_save_live, NULL,
5919 if (nb_numa_nodes > 0) {
5922 if (nb_numa_nodes > smp_cpus) {
5923 nb_numa_nodes = smp_cpus;
5926 /* If no memory size if given for any node, assume the default case
5927 * and distribute the available memory equally across all nodes
5929 for (i = 0; i < nb_numa_nodes; i++) {
5930 if (node_mem[i] != 0)
5933 if (i == nb_numa_nodes) {
5934 uint64_t usedmem = 0;
5936 /* On Linux, the each node's border has to be 8MB aligned,
5937 * the final node gets the rest.
5939 for (i = 0; i < nb_numa_nodes - 1; i++) {
5940 node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
5941 usedmem += node_mem[i];
5943 node_mem[i] = ram_size - usedmem;
5946 for (i = 0; i < nb_numa_nodes; i++) {
5947 if (node_cpumask[i] != 0)
5950 /* assigning the VCPUs round-robin is easier to implement, guest OSes
5951 * must cope with this anyway, because there are BIOSes out there in
5952 * real machines which also use this scheme.
5954 if (i == nb_numa_nodes) {
5955 for (i = 0; i < smp_cpus; i++) {
5956 node_cpumask[i % nb_numa_nodes] |= 1 << i;
5961 if (foreach_device_config(DEV_SERIAL, serial_parse) < 0)
5963 if (foreach_device_config(DEV_PARALLEL, parallel_parse) < 0)
5965 if (foreach_device_config(DEV_VIRTCON, virtcon_parse) < 0)
5967 if (foreach_device_config(DEV_DEBUGCON, debugcon_parse) < 0)
5970 module_call_init(MODULE_INIT_DEVICE);
5972 if (qemu_opts_foreach(&qemu_device_opts, device_help_func, NULL, 0) != 0)
5976 i = select_watchdog(watchdog);
5978 exit (i == 1 ? 1 : 0);
5981 if (machine->compat_props) {
5982 qdev_prop_register_global_list(machine->compat_props);
5986 machine->init(ram_size, boot_devices,
5987 kernel_filename, kernel_cmdline, initrd_filename, cpu_model);
5989 cpu_synchronize_all_post_init();
5992 /* must be after terminal init, SDL library changes signal handlers */
5996 for (env = first_cpu; env != NULL; env = env->next_cpu) {
5997 for (i = 0; i < nb_numa_nodes; i++) {
5998 if (node_cpumask[i] & (1 << env->cpu_index)) {
6004 current_machine = machine;
6006 /* init USB devices */
6008 if (foreach_device_config(DEV_USB, usb_parse) < 0)
6012 /* init generic devices */
6013 if (qemu_opts_foreach(&qemu_device_opts, device_init_func, NULL, 1) != 0)
6016 net_check_clients();
6018 /* just use the first displaystate for the moment */
6019 ds = get_displaystate();
6021 if (display_type == DT_DEFAULT) {
6022 #if defined(CONFIG_SDL) || defined(CONFIG_COCOA)
6023 display_type = DT_SDL;
6025 display_type = DT_VNC;
6026 vnc_display = "localhost:0,to=99";
6032 switch (display_type) {
6035 #if defined(CONFIG_CURSES)
6037 curses_display_init(ds, full_screen);
6040 #if defined(CONFIG_SDL)
6042 sdl_display_init(ds, full_screen, no_frame);
6044 #elif defined(CONFIG_COCOA)
6046 cocoa_display_init(ds, full_screen);
6050 vnc_display_init(ds);
6051 if (vnc_display_open(ds, vnc_display) < 0)
6054 if (show_vnc_port) {
6055 printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));
6063 dcl = ds->listeners;
6064 while (dcl != NULL) {
6065 if (dcl->dpy_refresh != NULL) {
6066 ds->gui_timer = qemu_new_timer(rt_clock, gui_update, ds);
6067 qemu_mod_timer(ds->gui_timer, qemu_get_clock(rt_clock));
6072 if (display_type == DT_NOGRAPHIC || display_type == DT_VNC) {
6073 nographic_timer = qemu_new_timer(rt_clock, nographic_update, NULL);
6074 qemu_mod_timer(nographic_timer, qemu_get_clock(rt_clock));
6077 text_consoles_set_display(ds);
6079 if (qemu_opts_foreach(&qemu_mon_opts, mon_init_func, NULL, 1) != 0)
6082 if (gdbstub_dev && gdbserver_start(gdbstub_dev) < 0) {
6083 fprintf(stderr, "qemu: could not open gdbserver on device '%s'\n",
6088 qdev_machine_creation_done();
6090 if (rom_load_all() != 0) {
6091 fprintf(stderr, "rom loading failed\n");
6095 qemu_system_reset();
6097 if (load_vmstate(loadvm) < 0) {
6103 qemu_start_incoming_migration(incoming);
6104 } else if (autostart) {
6114 len = write(fds[1], &status, 1);
6115 if (len == -1 && (errno == EINTR))
6122 perror("not able to chdir to /");
6125 TFR(fd = qemu_open("/dev/null", O_RDWR));
6131 pwd = getpwnam(run_as);
6133 fprintf(stderr, "User \"%s\" doesn't exist\n", run_as);
6139 if (chroot(chroot_dir) < 0) {
6140 fprintf(stderr, "chroot failed\n");
6144 perror("not able to chdir to /");
6150 if (setgid(pwd->pw_gid) < 0) {
6151 fprintf(stderr, "Failed to setgid(%d)\n", pwd->pw_gid);
6154 if (setuid(pwd->pw_uid) < 0) {
6155 fprintf(stderr, "Failed to setuid(%d)\n", pwd->pw_uid);
6158 if (setuid(0) != -1) {
6159 fprintf(stderr, "Dropping privileges failed\n");