4 * Copyright (c) 2003-2004 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
36 #include <sys/times.h>
42 #include <sys/ioctl.h>
43 #include <sys/socket.h>
45 #include <linux/if_tun.h>
49 #include <sys/timeb.h>
51 #define getopt_long_only getopt_long
52 #define memalign(align, size) malloc(size)
60 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
62 //#define DEBUG_UNUSED_IOPORT
64 #if !defined(CONFIG_SOFTMMU)
65 #define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
67 #define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
71 #define GUI_REFRESH_INTERVAL 30
73 /* XXX: use a two level table to limit memory usage */
74 #define MAX_IOPORTS 65536
76 const char *bios_dir = CONFIG_QEMU_SHAREDIR;
77 char phys_ram_file[1024];
79 CPUState *cpu_single_env;
80 void *ioport_opaque[MAX_IOPORTS];
81 IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
82 IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
83 BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
85 static DisplayState display_state;
87 int64_t ticks_per_sec;
88 int boot_device = 'c';
90 static char network_script[1024];
91 int pit_min_timer_count = 0;
93 NetDriverState nd_table[MAX_NICS];
94 SerialState *serial_console;
98 /***********************************************************/
101 uint32_t default_ioport_readb(void *opaque, uint32_t address)
103 #ifdef DEBUG_UNUSED_IOPORT
104 fprintf(stderr, "inb: port=0x%04x\n", address);
109 void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
111 #ifdef DEBUG_UNUSED_IOPORT
112 fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
116 /* default is to make two byte accesses */
117 uint32_t default_ioport_readw(void *opaque, uint32_t address)
120 data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address);
121 data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8;
125 void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
127 ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff);
128 ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff);
131 uint32_t default_ioport_readl(void *opaque, uint32_t address)
133 #ifdef DEBUG_UNUSED_IOPORT
134 fprintf(stderr, "inl: port=0x%04x\n", address);
139 void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
141 #ifdef DEBUG_UNUSED_IOPORT
142 fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
146 void init_ioports(void)
150 for(i = 0; i < MAX_IOPORTS; i++) {
151 ioport_read_table[0][i] = default_ioport_readb;
152 ioport_write_table[0][i] = default_ioport_writeb;
153 ioport_read_table[1][i] = default_ioport_readw;
154 ioport_write_table[1][i] = default_ioport_writew;
155 ioport_read_table[2][i] = default_ioport_readl;
156 ioport_write_table[2][i] = default_ioport_writel;
160 /* size is the word size in byte */
161 int register_ioport_read(int start, int length, int size,
162 IOPortReadFunc *func, void *opaque)
168 } else if (size == 2) {
170 } else if (size == 4) {
173 hw_error("register_ioport_read: invalid size");
176 for(i = start; i < start + length; i += size) {
177 ioport_read_table[bsize][i] = func;
178 if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
179 hw_error("register_ioport_read: invalid opaque");
180 ioport_opaque[i] = opaque;
185 /* size is the word size in byte */
186 int register_ioport_write(int start, int length, int size,
187 IOPortWriteFunc *func, void *opaque)
193 } else if (size == 2) {
195 } else if (size == 4) {
198 hw_error("register_ioport_write: invalid size");
201 for(i = start; i < start + length; i += size) {
202 ioport_write_table[bsize][i] = func;
203 if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
204 hw_error("register_ioport_read: invalid opaque");
205 ioport_opaque[i] = opaque;
210 void pstrcpy(char *buf, int buf_size, const char *str)
220 if (c == 0 || q >= buf + buf_size - 1)
227 /* strcat and truncate. */
228 char *pstrcat(char *buf, int buf_size, const char *s)
233 pstrcpy(buf + len, buf_size - len, s);
237 /* return the size or -1 if error */
238 int load_image(const char *filename, uint8_t *addr)
241 fd = open(filename, O_RDONLY | O_BINARY);
244 size = lseek(fd, 0, SEEK_END);
245 lseek(fd, 0, SEEK_SET);
246 if (read(fd, addr, size) != size) {
254 void cpu_outb(CPUState *env, int addr, int val)
256 addr &= (MAX_IOPORTS - 1);
257 ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
260 void cpu_outw(CPUState *env, int addr, int val)
262 addr &= (MAX_IOPORTS - 1);
263 ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
266 void cpu_outl(CPUState *env, int addr, int val)
268 addr &= (MAX_IOPORTS - 1);
269 ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
272 int cpu_inb(CPUState *env, int addr)
274 addr &= (MAX_IOPORTS - 1);
275 return ioport_read_table[0][addr](ioport_opaque[addr], addr);
278 int cpu_inw(CPUState *env, int addr)
280 addr &= (MAX_IOPORTS - 1);
281 return ioport_read_table[1][addr](ioport_opaque[addr], addr);
284 int cpu_inl(CPUState *env, int addr)
286 addr &= (MAX_IOPORTS - 1);
287 return ioport_read_table[2][addr](ioport_opaque[addr], addr);
290 /***********************************************************/
291 void hw_error(const char *fmt, ...)
296 fprintf(stderr, "qemu: hardware error: ");
297 vfprintf(stderr, fmt, ap);
298 fprintf(stderr, "\n");
300 cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
302 cpu_dump_state(global_env, stderr, 0);
308 /***********************************************************/
311 #if defined(__powerpc__)
313 static inline uint32_t get_tbl(void)
316 asm volatile("mftb %0" : "=r" (tbl));
320 static inline uint32_t get_tbu(void)
323 asm volatile("mftbu %0" : "=r" (tbl));
327 int64_t cpu_get_real_ticks(void)
330 /* NOTE: we test if wrapping has occurred */
336 return ((int64_t)h << 32) | l;
339 #elif defined(__i386__)
341 int64_t cpu_get_real_ticks(void)
344 asm volatile ("rdtsc" : "=A" (val));
349 #error unsupported CPU
352 static int64_t cpu_ticks_offset;
353 static int cpu_ticks_enabled;
355 static inline int64_t cpu_get_ticks(void)
357 if (!cpu_ticks_enabled) {
358 return cpu_ticks_offset;
360 return cpu_get_real_ticks() + cpu_ticks_offset;
364 /* enable cpu_get_ticks() */
365 void cpu_enable_ticks(void)
367 if (!cpu_ticks_enabled) {
368 cpu_ticks_offset -= cpu_get_real_ticks();
369 cpu_ticks_enabled = 1;
373 /* disable cpu_get_ticks() : the clock is stopped. You must not call
374 cpu_get_ticks() after that. */
375 void cpu_disable_ticks(void)
377 if (cpu_ticks_enabled) {
378 cpu_ticks_offset = cpu_get_ticks();
379 cpu_ticks_enabled = 0;
383 static int64_t get_clock(void)
388 return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
391 gettimeofday(&tv, NULL);
392 return tv.tv_sec * 1000000LL + tv.tv_usec;
396 void cpu_calibrate_ticks(void)
401 ticks = cpu_get_real_ticks();
407 usec = get_clock() - usec;
408 ticks = cpu_get_real_ticks() - ticks;
409 ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
412 /* compute with 96 bit intermediate result: (a*b)/c */
413 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
418 #ifdef WORDS_BIGENDIAN
428 rl = (uint64_t)u.l.low * (uint64_t)b;
429 rh = (uint64_t)u.l.high * (uint64_t)b;
432 res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
436 #define QEMU_TIMER_REALTIME 0
437 #define QEMU_TIMER_VIRTUAL 1
441 /* XXX: add frequency */
449 struct QEMUTimer *next;
455 static QEMUTimer *active_timers[2];
457 static MMRESULT timerID;
459 /* frequency of the times() clock tick */
460 static int timer_freq;
463 QEMUClock *qemu_new_clock(int type)
466 clock = qemu_mallocz(sizeof(QEMUClock));
473 QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
477 ts = qemu_mallocz(sizeof(QEMUTimer));
484 void qemu_free_timer(QEMUTimer *ts)
489 /* stop a timer, but do not dealloc it */
490 void qemu_del_timer(QEMUTimer *ts)
494 /* NOTE: this code must be signal safe because
495 qemu_timer_expired() can be called from a signal. */
496 pt = &active_timers[ts->clock->type];
509 /* modify the current timer so that it will be fired when current_time
510 >= expire_time. The corresponding callback will be called. */
511 void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
517 /* add the timer in the sorted list */
518 /* NOTE: this code must be signal safe because
519 qemu_timer_expired() can be called from a signal. */
520 pt = &active_timers[ts->clock->type];
525 if (t->expire_time > expire_time)
529 ts->expire_time = expire_time;
534 int qemu_timer_pending(QEMUTimer *ts)
537 for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
544 static inline int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
548 return (timer_head->expire_time <= current_time);
551 static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
557 if (ts->expire_time > current_time)
559 /* remove timer from the list before calling the callback */
560 *ptimer_head = ts->next;
563 /* run the callback (the timer list can be modified) */
568 int64_t qemu_get_clock(QEMUClock *clock)
570 switch(clock->type) {
571 case QEMU_TIMER_REALTIME:
573 return GetTickCount();
575 /* XXX: portability among Linux hosts */
576 if (timer_freq == 100) {
577 return times(NULL) * 10;
579 return ((int64_t)times(NULL) * 1000) / timer_freq;
583 case QEMU_TIMER_VIRTUAL:
584 return cpu_get_ticks();
589 void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
591 uint64_t expire_time;
593 if (qemu_timer_pending(ts)) {
594 expire_time = ts->expire_time;
598 qemu_put_be64(f, expire_time);
601 void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
603 uint64_t expire_time;
605 expire_time = qemu_get_be64(f);
606 if (expire_time != -1) {
607 qemu_mod_timer(ts, expire_time);
613 static void timer_save(QEMUFile *f, void *opaque)
615 if (cpu_ticks_enabled) {
616 hw_error("cannot save state if virtual timers are running");
618 qemu_put_be64s(f, &cpu_ticks_offset);
619 qemu_put_be64s(f, &ticks_per_sec);
622 static int timer_load(QEMUFile *f, void *opaque, int version_id)
626 if (cpu_ticks_enabled) {
629 qemu_get_be64s(f, &cpu_ticks_offset);
630 qemu_get_be64s(f, &ticks_per_sec);
635 void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg,
636 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
638 static void host_alarm_handler(int host_signum)
641 if (qemu_timer_expired(active_timers[QEMU_TIMER_VIRTUAL],
642 qemu_get_clock(vm_clock)) ||
643 qemu_timer_expired(active_timers[QEMU_TIMER_REALTIME],
644 qemu_get_clock(rt_clock))) {
645 /* stop the cpu because a timer occured */
646 cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
650 static void init_timers(void)
652 rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
653 vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
658 timerID = timeSetEvent(10, // interval (ms)
660 host_alarm_handler, // function
661 (DWORD)&count, // user parameter
662 TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
664 perror("failed timer alarm");
668 pit_min_timer_count = ((uint64_t)10000 * PIT_FREQ) / 1000000;
671 struct sigaction act;
672 struct itimerval itv;
674 /* get times() syscall frequency */
675 timer_freq = sysconf(_SC_CLK_TCK);
678 sigfillset(&act.sa_mask);
680 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
681 act.sa_flags |= SA_ONSTACK;
683 act.sa_handler = host_alarm_handler;
684 sigaction(SIGALRM, &act, NULL);
686 itv.it_interval.tv_sec = 0;
687 itv.it_interval.tv_usec = 1000;
688 itv.it_value.tv_sec = 0;
689 itv.it_value.tv_usec = 10 * 1000;
690 setitimer(ITIMER_REAL, &itv, NULL);
691 /* we probe the tick duration of the kernel to inform the user if
692 the emulated kernel requested a too high timer frequency */
693 getitimer(ITIMER_REAL, &itv);
694 pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) /
700 void quit_timers(void)
703 timeKillEvent(timerID);
707 /***********************************************************/
712 int serial_open_device(void)
719 int serial_open_device(void)
721 char slave_name[1024];
722 int master_fd, slave_fd;
724 if (serial_console == NULL && nographic) {
725 /* use console for serial port */
728 if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
729 fprintf(stderr, "warning: could not create pseudo terminal for serial port\n");
732 fprintf(stderr, "Serial port redirected to %s\n", slave_name);
739 /***********************************************************/
740 /* Linux network device redirector */
744 static int net_init(void)
749 void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
755 static int tun_open(char *ifname, int ifname_size)
760 fd = open("/dev/net/tun", O_RDWR);
762 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
765 memset(&ifr, 0, sizeof(ifr));
766 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
767 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
768 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
770 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
774 printf("Connected to host network interface: %s\n", ifr.ifr_name);
775 pstrcpy(ifname, ifname_size, ifr.ifr_name);
776 fcntl(fd, F_SETFL, O_NONBLOCK);
780 static int net_init(void)
782 int pid, status, launch_script, i;
784 char *args[MAX_NICS + 2];
788 for(i = 0; i < nb_nics; i++) {
791 nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
798 /* try to launch network init script */
803 *parg++ = network_script;
804 for(i = 0; i < nb_nics; i++) {
807 *parg++ = nd->ifname;
811 execv(network_script, args);
814 while (waitpid(pid, &status, 0) != pid);
815 if (!WIFEXITED(status) ||
816 WEXITSTATUS(status) != 0) {
817 fprintf(stderr, "%s: could not launch network script\n",
825 void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
828 printf("NE2000: sending packet size=%d\n", size);
830 write(nd->fd, buf, size);
835 /***********************************************************/
840 static void term_exit(void)
844 static void term_init(void)
850 /* init terminal so that we can grab keys */
851 static struct termios oldtty;
853 static void term_exit(void)
855 tcsetattr (0, TCSANOW, &oldtty);
858 static void term_init(void)
865 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
866 |INLCR|IGNCR|ICRNL|IXON);
867 tty.c_oflag |= OPOST;
868 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
869 /* if graphical mode, we allow Ctrl-C handling */
871 tty.c_lflag &= ~ISIG;
872 tty.c_cflag &= ~(CSIZE|PARENB);
877 tcsetattr (0, TCSANOW, &tty);
881 fcntl(0, F_SETFL, O_NONBLOCK);
886 static void dumb_update(DisplayState *ds, int x, int y, int w, int h)
890 static void dumb_resize(DisplayState *ds, int w, int h)
894 static void dumb_refresh(DisplayState *ds)
896 vga_update_display();
899 void dumb_display_init(DisplayState *ds)
904 ds->dpy_update = dumb_update;
905 ds->dpy_resize = dumb_resize;
906 ds->dpy_refresh = dumb_refresh;
909 #if !defined(CONFIG_SOFTMMU)
910 /***********************************************************/
911 /* cpu signal handler */
912 static void host_segv_handler(int host_signum, siginfo_t *info,
915 if (cpu_signal_handler(host_signum, info, puc))
922 /***********************************************************/
925 #define MAX_IO_HANDLERS 64
927 typedef struct IOHandlerRecord {
929 IOCanRWHandler *fd_can_read;
930 IOReadHandler *fd_read;
935 struct IOHandlerRecord *next;
938 static IOHandlerRecord *first_io_handler;
940 int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read,
941 IOReadHandler *fd_read, void *opaque)
943 IOHandlerRecord *ioh;
945 ioh = qemu_mallocz(sizeof(IOHandlerRecord));
949 ioh->fd_can_read = fd_can_read;
950 ioh->fd_read = fd_read;
951 ioh->opaque = opaque;
952 ioh->next = first_io_handler;
953 first_io_handler = ioh;
957 void qemu_del_fd_read_handler(int fd)
959 IOHandlerRecord **pioh, *ioh;
961 pioh = &first_io_handler;
974 /***********************************************************/
975 /* savevm/loadvm support */
977 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
979 fwrite(buf, 1, size, f);
982 void qemu_put_byte(QEMUFile *f, int v)
987 void qemu_put_be16(QEMUFile *f, unsigned int v)
989 qemu_put_byte(f, v >> 8);
993 void qemu_put_be32(QEMUFile *f, unsigned int v)
995 qemu_put_byte(f, v >> 24);
996 qemu_put_byte(f, v >> 16);
997 qemu_put_byte(f, v >> 8);
1001 void qemu_put_be64(QEMUFile *f, uint64_t v)
1003 qemu_put_be32(f, v >> 32);
1004 qemu_put_be32(f, v);
1007 int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
1009 return fread(buf, 1, size, f);
1012 int qemu_get_byte(QEMUFile *f)
1022 unsigned int qemu_get_be16(QEMUFile *f)
1025 v = qemu_get_byte(f) << 8;
1026 v |= qemu_get_byte(f);
1030 unsigned int qemu_get_be32(QEMUFile *f)
1033 v = qemu_get_byte(f) << 24;
1034 v |= qemu_get_byte(f) << 16;
1035 v |= qemu_get_byte(f) << 8;
1036 v |= qemu_get_byte(f);
1040 uint64_t qemu_get_be64(QEMUFile *f)
1043 v = (uint64_t)qemu_get_be32(f) << 32;
1044 v |= qemu_get_be32(f);
1048 int64_t qemu_ftell(QEMUFile *f)
1053 int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
1055 if (fseek(f, pos, whence) < 0)
1060 typedef struct SaveStateEntry {
1064 SaveStateHandler *save_state;
1065 LoadStateHandler *load_state;
1067 struct SaveStateEntry *next;
1070 static SaveStateEntry *first_se;
1072 int register_savevm(const char *idstr,
1075 SaveStateHandler *save_state,
1076 LoadStateHandler *load_state,
1079 SaveStateEntry *se, **pse;
1081 se = qemu_malloc(sizeof(SaveStateEntry));
1084 pstrcpy(se->idstr, sizeof(se->idstr), idstr);
1085 se->instance_id = instance_id;
1086 se->version_id = version_id;
1087 se->save_state = save_state;
1088 se->load_state = load_state;
1089 se->opaque = opaque;
1092 /* add at the end of list */
1094 while (*pse != NULL)
1095 pse = &(*pse)->next;
1100 #define QEMU_VM_FILE_MAGIC 0x5145564d
1101 #define QEMU_VM_FILE_VERSION 0x00000001
1103 int qemu_savevm(const char *filename)
1107 int len, len_pos, cur_pos, saved_vm_running, ret;
1109 saved_vm_running = vm_running;
1112 f = fopen(filename, "wb");
1118 qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
1119 qemu_put_be32(f, QEMU_VM_FILE_VERSION);
1121 for(se = first_se; se != NULL; se = se->next) {
1123 len = strlen(se->idstr);
1124 qemu_put_byte(f, len);
1125 qemu_put_buffer(f, se->idstr, len);
1127 qemu_put_be32(f, se->instance_id);
1128 qemu_put_be32(f, se->version_id);
1130 /* record size: filled later */
1132 qemu_put_be32(f, 0);
1134 se->save_state(f, se->opaque);
1136 /* fill record size */
1138 len = ftell(f) - len_pos - 4;
1139 fseek(f, len_pos, SEEK_SET);
1140 qemu_put_be32(f, len);
1141 fseek(f, cur_pos, SEEK_SET);
1147 if (saved_vm_running)
1152 static SaveStateEntry *find_se(const char *idstr, int instance_id)
1156 for(se = first_se; se != NULL; se = se->next) {
1157 if (!strcmp(se->idstr, idstr) &&
1158 instance_id == se->instance_id)
1164 int qemu_loadvm(const char *filename)
1168 int len, cur_pos, ret, instance_id, record_len, version_id;
1169 int saved_vm_running;
1173 saved_vm_running = vm_running;
1176 f = fopen(filename, "rb");
1182 v = qemu_get_be32(f);
1183 if (v != QEMU_VM_FILE_MAGIC)
1185 v = qemu_get_be32(f);
1186 if (v != QEMU_VM_FILE_VERSION) {
1193 len = qemu_get_byte(f);
1196 qemu_get_buffer(f, idstr, len);
1198 instance_id = qemu_get_be32(f);
1199 version_id = qemu_get_be32(f);
1200 record_len = qemu_get_be32(f);
1202 printf("idstr=%s instance=0x%x version=%d len=%d\n",
1203 idstr, instance_id, version_id, record_len);
1206 se = find_se(idstr, instance_id);
1208 fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n",
1209 instance_id, idstr);
1211 ret = se->load_state(f, se->opaque, version_id);
1213 fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
1214 instance_id, idstr);
1217 /* always seek to exact end of record */
1218 qemu_fseek(f, cur_pos + record_len, SEEK_SET);
1223 if (saved_vm_running)
1228 /***********************************************************/
1229 /* cpu save/restore */
1231 #if defined(TARGET_I386)
1233 static void cpu_put_seg(QEMUFile *f, SegmentCache *dt)
1235 qemu_put_be32(f, (uint32_t)dt->base);
1236 qemu_put_be32(f, dt->limit);
1237 qemu_put_be32(f, dt->flags);
1240 static void cpu_get_seg(QEMUFile *f, SegmentCache *dt)
1242 dt->base = (uint8_t *)qemu_get_be32(f);
1243 dt->limit = qemu_get_be32(f);
1244 dt->flags = qemu_get_be32(f);
1247 void cpu_save(QEMUFile *f, void *opaque)
1249 CPUState *env = opaque;
1250 uint16_t fptag, fpus, fpuc;
1254 for(i = 0; i < 8; i++)
1255 qemu_put_be32s(f, &env->regs[i]);
1256 qemu_put_be32s(f, &env->eip);
1257 qemu_put_be32s(f, &env->eflags);
1258 qemu_put_be32s(f, &env->eflags);
1259 hflags = env->hflags; /* XXX: suppress most of the redundant hflags */
1260 qemu_put_be32s(f, &hflags);
1264 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
1266 for (i=7; i>=0; i--) {
1268 if (env->fptags[i]) {
1273 qemu_put_be16s(f, &fpuc);
1274 qemu_put_be16s(f, &fpus);
1275 qemu_put_be16s(f, &fptag);
1277 for(i = 0; i < 8; i++) {
1280 cpu_get_fp80(&mant, &exp, env->fpregs[i]);
1281 qemu_put_be64(f, mant);
1282 qemu_put_be16(f, exp);
1285 for(i = 0; i < 6; i++)
1286 cpu_put_seg(f, &env->segs[i]);
1287 cpu_put_seg(f, &env->ldt);
1288 cpu_put_seg(f, &env->tr);
1289 cpu_put_seg(f, &env->gdt);
1290 cpu_put_seg(f, &env->idt);
1292 qemu_put_be32s(f, &env->sysenter_cs);
1293 qemu_put_be32s(f, &env->sysenter_esp);
1294 qemu_put_be32s(f, &env->sysenter_eip);
1296 qemu_put_be32s(f, &env->cr[0]);
1297 qemu_put_be32s(f, &env->cr[2]);
1298 qemu_put_be32s(f, &env->cr[3]);
1299 qemu_put_be32s(f, &env->cr[4]);
1301 for(i = 0; i < 8; i++)
1302 qemu_put_be32s(f, &env->dr[i]);
1305 qemu_put_be32s(f, &env->a20_mask);
1308 int cpu_load(QEMUFile *f, void *opaque, int version_id)
1310 CPUState *env = opaque;
1313 uint16_t fpus, fpuc, fptag;
1315 if (version_id != 1)
1317 for(i = 0; i < 8; i++)
1318 qemu_get_be32s(f, &env->regs[i]);
1319 qemu_get_be32s(f, &env->eip);
1320 qemu_get_be32s(f, &env->eflags);
1321 qemu_get_be32s(f, &env->eflags);
1322 qemu_get_be32s(f, &hflags);
1324 qemu_get_be16s(f, &fpuc);
1325 qemu_get_be16s(f, &fpus);
1326 qemu_get_be16s(f, &fptag);
1328 for(i = 0; i < 8; i++) {
1331 mant = qemu_get_be64(f);
1332 exp = qemu_get_be16(f);
1333 env->fpregs[i] = cpu_set_fp80(mant, exp);
1337 env->fpstt = (fpus >> 11) & 7;
1338 env->fpus = fpus & ~0x3800;
1339 for(i = 0; i < 8; i++) {
1340 env->fptags[i] = ((fptag & 3) == 3);
1344 for(i = 0; i < 6; i++)
1345 cpu_get_seg(f, &env->segs[i]);
1346 cpu_get_seg(f, &env->ldt);
1347 cpu_get_seg(f, &env->tr);
1348 cpu_get_seg(f, &env->gdt);
1349 cpu_get_seg(f, &env->idt);
1351 qemu_get_be32s(f, &env->sysenter_cs);
1352 qemu_get_be32s(f, &env->sysenter_esp);
1353 qemu_get_be32s(f, &env->sysenter_eip);
1355 qemu_get_be32s(f, &env->cr[0]);
1356 qemu_get_be32s(f, &env->cr[2]);
1357 qemu_get_be32s(f, &env->cr[3]);
1358 qemu_get_be32s(f, &env->cr[4]);
1360 for(i = 0; i < 8; i++)
1361 qemu_get_be32s(f, &env->dr[i]);
1364 qemu_get_be32s(f, &env->a20_mask);
1366 /* XXX: compute hflags from scratch, except for CPL and IIF */
1367 env->hflags = hflags;
1374 #warning No CPU save/restore functions
1378 /***********************************************************/
1379 /* ram save/restore */
1381 /* we just avoid storing empty pages */
1382 static void ram_put_page(QEMUFile *f, const uint8_t *buf, int len)
1387 for(i = 1; i < len; i++) {
1391 qemu_put_byte(f, 1);
1392 qemu_put_byte(f, v);
1395 qemu_put_byte(f, 0);
1396 qemu_put_buffer(f, buf, len);
1399 static int ram_get_page(QEMUFile *f, uint8_t *buf, int len)
1403 v = qemu_get_byte(f);
1406 if (qemu_get_buffer(f, buf, len) != len)
1410 v = qemu_get_byte(f);
1411 memset(buf, v, len);
1419 static void ram_save(QEMUFile *f, void *opaque)
1422 qemu_put_be32(f, phys_ram_size);
1423 for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
1424 ram_put_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
1428 static int ram_load(QEMUFile *f, void *opaque, int version_id)
1432 if (version_id != 1)
1434 if (qemu_get_be32(f) != phys_ram_size)
1436 for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
1437 ret = ram_get_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
1444 /***********************************************************/
1445 /* main execution loop */
1447 void gui_update(void *opaque)
1449 display_state.dpy_refresh(&display_state);
1450 qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
1453 /* XXX: support several handlers */
1454 VMStopHandler *vm_stop_cb;
1455 VMStopHandler *vm_stop_opaque;
1457 int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
1460 vm_stop_opaque = opaque;
1464 void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque)
1477 void vm_stop(int reason)
1480 cpu_disable_ticks();
1484 vm_stop_cb(vm_stop_opaque, reason);
1493 struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf;
1494 IOHandlerRecord *ioh, *ioh_next;
1499 CPUState *env = global_env;
1503 ret = cpu_exec(env);
1504 if (reset_requested) {
1505 ret = EXCP_INTERRUPT;
1508 if (ret == EXCP_DEBUG) {
1509 vm_stop(EXCP_DEBUG);
1511 /* if hlt instruction, we wait until the next IRQ */
1512 /* XXX: use timeout computed from timers */
1513 if (ret == EXCP_HLT)
1522 /* poll any events */
1523 /* XXX: separate device handlers from system ones */
1525 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
1526 if (!ioh->fd_can_read) {
1529 pf->events = POLLIN;
1533 max_size = ioh->fd_can_read(ioh->opaque);
1535 if (max_size > sizeof(buf))
1536 max_size = sizeof(buf);
1538 pf->events = POLLIN;
1545 ioh->max_size = max_size;
1548 ret = poll(ufds, pf - ufds, timeout);
1550 /* XXX: better handling of removal */
1551 for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
1552 ioh_next = ioh->next;
1555 if (pf->revents & POLLIN) {
1556 if (ioh->max_size == 0) {
1557 /* just a read event */
1558 ioh->fd_read(ioh->opaque, NULL, 0);
1560 n = read(ioh->fd, buf, ioh->max_size);
1562 ioh->fd_read(ioh->opaque, buf, n);
1563 } else if (errno != -EAGAIN) {
1564 ioh->fd_read(ioh->opaque, NULL, -errno);
1574 qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL],
1575 qemu_get_clock(vm_clock));
1577 /* XXX: add explicit timer */
1580 /* run dma transfers, if any */
1584 /* real time timers */
1585 qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME],
1586 qemu_get_clock(rt_clock));
1588 cpu_disable_ticks();
1594 printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1595 "usage: %s [options] [disk_image]\n"
1597 "'disk_image' is a raw hard image image for IDE hard disk 0\n"
1599 "Standard options:\n"
1600 "-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
1601 "-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
1602 "-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
1603 "-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
1604 "-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
1605 "-snapshot write to temporary files instead of disk image files\n"
1606 "-m megs set virtual RAM size to megs MB\n"
1607 "-nographic disable graphical output and redirect serial I/Os to console\n"
1609 "Network options:\n"
1610 "-n script set network init script [default=%s]\n"
1611 "-nics n simulate 'n' network interfaces [default=1]\n"
1612 "-macaddr addr set the mac address of the first interface\n"
1613 "-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n"
1615 "Linux boot specific:\n"
1616 "-kernel bzImage use 'bzImage' as kernel image\n"
1617 "-append cmdline use 'cmdline' as kernel command line\n"
1618 "-initrd file use 'file' as initial ram disk\n"
1620 "Debug/Expert options:\n"
1621 "-s wait gdb connection to port %d\n"
1622 "-p port change gdb connection port\n"
1623 "-d item1,... output log to %s (use -d ? for a list of log items)\n"
1624 "-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
1625 "-L path set the directory for the BIOS and VGA BIOS\n"
1626 #ifdef USE_CODE_COPY
1627 "-no-code-copy disable code copy acceleration\n"
1631 "During emulation, use C-a h to get terminal commands:\n",
1632 #ifdef CONFIG_SOFTMMU
1637 DEFAULT_NETWORK_SCRIPT,
1638 DEFAULT_GDBSTUB_PORT,
1641 #ifndef CONFIG_SOFTMMU
1643 "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
1644 "work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
1650 struct option long_options[] = {
1651 { "initrd", 1, NULL, 0, },
1652 { "hda", 1, NULL, 0, },
1653 { "hdb", 1, NULL, 0, },
1654 { "snapshot", 0, NULL, 0, },
1655 { "hdachs", 1, NULL, 0, },
1656 { "nographic", 0, NULL, 0, },
1657 { "kernel", 1, NULL, 0, },
1658 { "append", 1, NULL, 0, },
1659 { "tun-fd", 1, NULL, 0, },
1660 { "hdc", 1, NULL, 0, },
1661 { "hdd", 1, NULL, 0, },
1662 { "cdrom", 1, NULL, 0, },
1663 { "boot", 1, NULL, 0, },
1664 { "fda", 1, NULL, 0, },
1665 { "fdb", 1, NULL, 0, },
1666 { "no-code-copy", 0, NULL, 0 },
1667 { "nics", 1, NULL, 0 },
1668 { "macaddr", 1, NULL, 0 },
1669 { NULL, 0, NULL, 0 },
1673 /* SDL use the pthreads and they modify sigaction. We don't
1675 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
1676 extern void __libc_sigaction();
1677 #define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
1679 extern void __sigaction();
1680 #define sigaction(sig, act, oact) __sigaction(sig, act, oact)
1682 #endif /* CONFIG_SDL */
1684 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
1686 /* this stack is only used during signal handling */
1687 #define SIGNAL_STACK_SIZE 32768
1689 static uint8_t *signal_stack;
1693 int main(int argc, char **argv)
1695 #ifdef CONFIG_GDBSTUB
1696 int use_gdbstub, gdbstub_port;
1698 int c, i, long_index, has_cdrom;
1699 int snapshot, linux_boot;
1701 const char *initrd_filename;
1702 const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
1703 const char *kernel_filename, *kernel_cmdline;
1704 DisplayState *ds = &display_state;
1705 int cyls, heads, secs;
1708 #if !defined(CONFIG_SOFTMMU)
1709 /* we never want that malloc() uses mmap() */
1710 mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
1712 initrd_filename = NULL;
1713 for(i = 0; i < MAX_FD; i++)
1714 fd_filename[i] = NULL;
1715 for(i = 0; i < MAX_DISKS; i++)
1716 hd_filename[i] = NULL;
1717 ram_size = 32 * 1024 * 1024;
1718 vga_ram_size = VGA_RAM_SIZE;
1719 pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
1720 #ifdef CONFIG_GDBSTUB
1722 gdbstub_port = DEFAULT_GDBSTUB_PORT;
1726 kernel_filename = NULL;
1727 kernel_cmdline = "";
1729 cyls = heads = secs = 0;
1732 /* default mac address of the first network interface */
1740 for(i = 0; i < MAX_NICS; i++)
1741 nd_table[i].fd = -1;
1744 c = getopt_long_only(argc, argv, "hm:d:n:sp:L:", long_options, &long_index);
1749 switch(long_index) {
1751 initrd_filename = optarg;
1754 hd_filename[0] = optarg;
1757 hd_filename[1] = optarg;
1766 cyls = strtol(p, (char **)&p, 0);
1770 heads = strtol(p, (char **)&p, 0);
1774 secs = strtol(p, (char **)&p, 0);
1785 kernel_filename = optarg;
1788 kernel_cmdline = optarg;
1797 fd = strtol(p, (char **)&p, 0);
1798 nd_table[nb_nics].fd = fd;
1799 snprintf(nd_table[nb_nics].ifname,
1800 sizeof(nd_table[nb_nics].ifname),
1805 } else if (*p != '\0') {
1806 fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics);
1815 hd_filename[2] = optarg;
1819 hd_filename[3] = optarg;
1822 hd_filename[2] = optarg;
1826 boot_device = optarg[0];
1827 if (boot_device != 'a' && boot_device != 'b' &&
1828 boot_device != 'c' && boot_device != 'd') {
1829 fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
1834 fd_filename[0] = optarg;
1837 fd_filename[1] = optarg;
1840 code_copy_enabled = 0;
1843 nb_nics = atoi(optarg);
1844 if (nb_nics < 1 || nb_nics > MAX_NICS) {
1845 fprintf(stderr, "qemu: invalid number of network interfaces\n");
1854 for(i = 0; i < 6; i++) {
1855 macaddr[i] = strtol(p, (char **)&p, 16);
1862 fprintf(stderr, "qemu: invalid syntax for ethernet address\n");
1876 ram_size = atoi(optarg) * 1024 * 1024;
1879 if (ram_size > PHYS_RAM_MAX_SIZE) {
1880 fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
1881 PHYS_RAM_MAX_SIZE / (1024 * 1024));
1890 mask = cpu_str_to_log_mask(optarg);
1892 printf("Log items (comma separated):\n");
1893 for(item = cpu_log_items; item->mask != 0; item++) {
1894 printf("%-10s %s\n", item->name, item->help);
1902 pstrcpy(network_script, sizeof(network_script), optarg);
1904 #ifdef CONFIG_GDBSTUB
1909 gdbstub_port = atoi(optarg);
1918 if (optind < argc) {
1919 hd_filename[0] = argv[optind++];
1922 linux_boot = (kernel_filename != NULL);
1924 if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
1925 fd_filename[0] == '\0')
1928 /* boot to cd by default if no hard disk */
1929 if (hd_filename[0] == '\0' && boot_device == 'c') {
1930 if (fd_filename[0] != '\0')
1936 #if !defined(CONFIG_SOFTMMU)
1937 /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
1939 static uint8_t stdout_buf[4096];
1940 setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
1943 setvbuf(stdout, NULL, _IOLBF, 0);
1946 /* init host network redirectors */
1947 for(i = 0; i < MAX_NICS; i++) {
1948 NetDriverState *nd = &nd_table[i];
1949 /* init virtual mac address */
1950 nd->macaddr[0] = macaddr[0];
1951 nd->macaddr[1] = macaddr[1];
1952 nd->macaddr[2] = macaddr[2];
1953 nd->macaddr[3] = macaddr[3];
1954 nd->macaddr[4] = macaddr[4];
1955 nd->macaddr[5] = macaddr[5] + i;
1959 /* init the memory */
1960 phys_ram_size = ram_size + vga_ram_size;
1962 #ifdef CONFIG_SOFTMMU
1963 phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
1964 if (!phys_ram_base) {
1965 fprintf(stderr, "Could not allocate physical memory\n");
1969 /* as we must map the same page at several addresses, we must use
1974 tmpdir = getenv("QEMU_TMPDIR");
1977 snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
1978 if (mkstemp(phys_ram_file) < 0) {
1979 fprintf(stderr, "Could not create temporary memory file '%s'\n",
1983 phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
1984 if (phys_ram_fd < 0) {
1985 fprintf(stderr, "Could not open temporary memory file '%s'\n",
1989 ftruncate(phys_ram_fd, phys_ram_size);
1990 unlink(phys_ram_file);
1991 phys_ram_base = mmap(get_mmap_addr(phys_ram_size),
1993 PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED,
1995 if (phys_ram_base == MAP_FAILED) {
1996 fprintf(stderr, "Could not map physical memory\n");
2002 /* we always create the cdrom drive, even if no disk is there */
2004 bs_table[2] = bdrv_new("cdrom");
2005 bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
2008 /* open the virtual block devices */
2009 for(i = 0; i < MAX_DISKS; i++) {
2010 if (hd_filename[i]) {
2013 snprintf(buf, sizeof(buf), "hd%c", i + 'a');
2014 bs_table[i] = bdrv_new(buf);
2016 if (bdrv_open(bs_table[i], hd_filename[i], snapshot) < 0) {
2017 fprintf(stderr, "qemu: could not open hard disk image '%s\n",
2021 if (i == 0 && cyls != 0)
2022 bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs);
2026 /* we always create at least one floppy disk */
2027 fd_table[0] = bdrv_new("fda");
2028 bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY);
2030 for(i = 0; i < MAX_FD; i++) {
2031 if (fd_filename[i]) {
2034 snprintf(buf, sizeof(buf), "fd%c", i + 'a');
2035 fd_table[i] = bdrv_new(buf);
2036 bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY);
2038 if (fd_filename[i] != '\0') {
2039 if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) {
2040 fprintf(stderr, "qemu: could not open floppy disk image '%s\n",
2050 /* init CPU state */
2053 cpu_single_env = env;
2055 register_savevm("timer", 0, 1, timer_save, timer_load, env);
2056 register_savevm("cpu", 0, 1, cpu_save, cpu_load, env);
2057 register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
2060 cpu_calibrate_ticks();
2064 dumb_display_init(ds);
2067 sdl_display_init(ds);
2069 dumb_display_init(ds);
2073 #if defined(TARGET_I386)
2074 pc_init(ram_size, vga_ram_size, boot_device,
2075 ds, fd_filename, snapshot,
2076 kernel_filename, kernel_cmdline, initrd_filename);
2077 #elif defined(TARGET_PPC)
2081 /* launched after the device init so that it can display or not a
2085 /* setup cpu signal handlers for MMU / self modifying code handling */
2086 #if !defined(CONFIG_SOFTMMU)
2088 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2091 signal_stack = malloc(SIGNAL_STACK_SIZE);
2092 stk.ss_sp = signal_stack;
2093 stk.ss_size = SIGNAL_STACK_SIZE;
2096 if (sigaltstack(&stk, NULL) < 0) {
2097 perror("sigaltstack");
2103 struct sigaction act;
2105 sigfillset(&act.sa_mask);
2106 act.sa_flags = SA_SIGINFO;
2107 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2108 act.sa_flags |= SA_ONSTACK;
2110 act.sa_sigaction = host_segv_handler;
2111 sigaction(SIGSEGV, &act, NULL);
2112 sigaction(SIGBUS, &act, NULL);
2113 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2114 sigaction(SIGFPE, &act, NULL);
2121 struct sigaction act;
2122 sigfillset(&act.sa_mask);
2124 act.sa_handler = SIG_IGN;
2125 sigaction(SIGPIPE, &act, NULL);
2129 gui_timer = qemu_new_timer(rt_clock, gui_update, NULL);
2130 qemu_mod_timer(gui_timer, qemu_get_clock(rt_clock));
2132 #ifdef CONFIG_GDBSTUB
2134 if (gdbserver_start(gdbstub_port) < 0) {
2135 fprintf(stderr, "Could not open gdbserver socket on port %d\n",
2139 printf("Waiting gdb connection on port %d\n", gdbstub_port);