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)
56 /* SDL use the pthreads and they modify sigaction. We don't
58 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
59 extern void __libc_sigaction();
60 #define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
62 extern void __sigaction();
63 #define sigaction(sig, act, oact) __sigaction(sig, act, oact)
65 #endif /* CONFIG_SDL */
71 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
73 //#define DEBUG_UNUSED_IOPORT
75 #if !defined(CONFIG_SOFTMMU)
76 #define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
78 #define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
82 #define GUI_REFRESH_INTERVAL 30
84 /* XXX: use a two level table to limit memory usage */
85 #define MAX_IOPORTS 65536
87 const char *bios_dir = CONFIG_QEMU_SHAREDIR;
88 char phys_ram_file[1024];
90 CPUState *cpu_single_env;
91 void *ioport_opaque[MAX_IOPORTS];
92 IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
93 IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
94 BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
96 static DisplayState display_state;
98 int64_t ticks_per_sec;
99 int boot_device = 'c';
101 static char network_script[1024];
102 int pit_min_timer_count = 0;
104 NetDriverState nd_table[MAX_NICS];
105 SerialState *serial_console;
106 QEMUTimer *gui_timer;
109 /***********************************************************/
112 uint32_t default_ioport_readb(void *opaque, uint32_t address)
114 #ifdef DEBUG_UNUSED_IOPORT
115 fprintf(stderr, "inb: port=0x%04x\n", address);
120 void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
122 #ifdef DEBUG_UNUSED_IOPORT
123 fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
127 /* default is to make two byte accesses */
128 uint32_t default_ioport_readw(void *opaque, uint32_t address)
131 data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address);
132 data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8;
136 void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
138 ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff);
139 ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff);
142 uint32_t default_ioport_readl(void *opaque, uint32_t address)
144 #ifdef DEBUG_UNUSED_IOPORT
145 fprintf(stderr, "inl: port=0x%04x\n", address);
150 void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
152 #ifdef DEBUG_UNUSED_IOPORT
153 fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
157 void init_ioports(void)
161 for(i = 0; i < MAX_IOPORTS; i++) {
162 ioport_read_table[0][i] = default_ioport_readb;
163 ioport_write_table[0][i] = default_ioport_writeb;
164 ioport_read_table[1][i] = default_ioport_readw;
165 ioport_write_table[1][i] = default_ioport_writew;
166 ioport_read_table[2][i] = default_ioport_readl;
167 ioport_write_table[2][i] = default_ioport_writel;
171 /* size is the word size in byte */
172 int register_ioport_read(int start, int length, int size,
173 IOPortReadFunc *func, void *opaque)
179 } else if (size == 2) {
181 } else if (size == 4) {
184 hw_error("register_ioport_read: invalid size");
187 for(i = start; i < start + length; i += size) {
188 ioport_read_table[bsize][i] = func;
189 if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
190 hw_error("register_ioport_read: invalid opaque");
191 ioport_opaque[i] = opaque;
196 /* size is the word size in byte */
197 int register_ioport_write(int start, int length, int size,
198 IOPortWriteFunc *func, void *opaque)
204 } else if (size == 2) {
206 } else if (size == 4) {
209 hw_error("register_ioport_write: invalid size");
212 for(i = start; i < start + length; i += size) {
213 ioport_write_table[bsize][i] = func;
214 if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
215 hw_error("register_ioport_read: invalid opaque");
216 ioport_opaque[i] = opaque;
221 void pstrcpy(char *buf, int buf_size, const char *str)
231 if (c == 0 || q >= buf + buf_size - 1)
238 /* strcat and truncate. */
239 char *pstrcat(char *buf, int buf_size, const char *s)
244 pstrcpy(buf + len, buf_size - len, s);
248 /* return the size or -1 if error */
249 int load_image(const char *filename, uint8_t *addr)
252 fd = open(filename, O_RDONLY | O_BINARY);
255 size = lseek(fd, 0, SEEK_END);
256 lseek(fd, 0, SEEK_SET);
257 if (read(fd, addr, size) != size) {
265 void cpu_outb(CPUState *env, int addr, int val)
267 addr &= (MAX_IOPORTS - 1);
268 ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
271 void cpu_outw(CPUState *env, int addr, int val)
273 addr &= (MAX_IOPORTS - 1);
274 ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
277 void cpu_outl(CPUState *env, int addr, int val)
279 addr &= (MAX_IOPORTS - 1);
280 ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
283 int cpu_inb(CPUState *env, int addr)
285 addr &= (MAX_IOPORTS - 1);
286 return ioport_read_table[0][addr](ioport_opaque[addr], addr);
289 int cpu_inw(CPUState *env, int addr)
291 addr &= (MAX_IOPORTS - 1);
292 return ioport_read_table[1][addr](ioport_opaque[addr], addr);
295 int cpu_inl(CPUState *env, int addr)
297 addr &= (MAX_IOPORTS - 1);
298 return ioport_read_table[2][addr](ioport_opaque[addr], addr);
301 /***********************************************************/
302 void hw_error(const char *fmt, ...)
307 fprintf(stderr, "qemu: hardware error: ");
308 vfprintf(stderr, fmt, ap);
309 fprintf(stderr, "\n");
311 cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
313 cpu_dump_state(global_env, stderr, 0);
319 /***********************************************************/
322 #if defined(__powerpc__)
324 static inline uint32_t get_tbl(void)
327 asm volatile("mftb %0" : "=r" (tbl));
331 static inline uint32_t get_tbu(void)
334 asm volatile("mftbu %0" : "=r" (tbl));
338 int64_t cpu_get_real_ticks(void)
341 /* NOTE: we test if wrapping has occurred */
347 return ((int64_t)h << 32) | l;
350 #elif defined(__i386__)
352 int64_t cpu_get_real_ticks(void)
355 asm volatile ("rdtsc" : "=A" (val));
360 #error unsupported CPU
363 static int64_t cpu_ticks_offset;
364 static int cpu_ticks_enabled;
366 static inline int64_t cpu_get_ticks(void)
368 if (!cpu_ticks_enabled) {
369 return cpu_ticks_offset;
371 return cpu_get_real_ticks() + cpu_ticks_offset;
375 /* enable cpu_get_ticks() */
376 void cpu_enable_ticks(void)
378 if (!cpu_ticks_enabled) {
379 cpu_ticks_offset -= cpu_get_real_ticks();
380 cpu_ticks_enabled = 1;
384 /* disable cpu_get_ticks() : the clock is stopped. You must not call
385 cpu_get_ticks() after that. */
386 void cpu_disable_ticks(void)
388 if (cpu_ticks_enabled) {
389 cpu_ticks_offset = cpu_get_ticks();
390 cpu_ticks_enabled = 0;
394 static int64_t get_clock(void)
399 return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
402 gettimeofday(&tv, NULL);
403 return tv.tv_sec * 1000000LL + tv.tv_usec;
407 void cpu_calibrate_ticks(void)
412 ticks = cpu_get_real_ticks();
418 usec = get_clock() - usec;
419 ticks = cpu_get_real_ticks() - ticks;
420 ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
423 /* compute with 96 bit intermediate result: (a*b)/c */
424 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
429 #ifdef WORDS_BIGENDIAN
439 rl = (uint64_t)u.l.low * (uint64_t)b;
440 rh = (uint64_t)u.l.high * (uint64_t)b;
443 res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
447 #define QEMU_TIMER_REALTIME 0
448 #define QEMU_TIMER_VIRTUAL 1
452 /* XXX: add frequency */
460 struct QEMUTimer *next;
466 static QEMUTimer *active_timers[2];
468 static MMRESULT timerID;
470 /* frequency of the times() clock tick */
471 static int timer_freq;
474 QEMUClock *qemu_new_clock(int type)
477 clock = qemu_mallocz(sizeof(QEMUClock));
484 QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
488 ts = qemu_mallocz(sizeof(QEMUTimer));
495 void qemu_free_timer(QEMUTimer *ts)
500 /* stop a timer, but do not dealloc it */
501 void qemu_del_timer(QEMUTimer *ts)
505 /* NOTE: this code must be signal safe because
506 qemu_timer_expired() can be called from a signal. */
507 pt = &active_timers[ts->clock->type];
520 /* modify the current timer so that it will be fired when current_time
521 >= expire_time. The corresponding callback will be called. */
522 void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
528 /* add the timer in the sorted list */
529 /* NOTE: this code must be signal safe because
530 qemu_timer_expired() can be called from a signal. */
531 pt = &active_timers[ts->clock->type];
536 if (t->expire_time > expire_time)
540 ts->expire_time = expire_time;
545 int qemu_timer_pending(QEMUTimer *ts)
548 for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
555 static inline int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
559 return (timer_head->expire_time <= current_time);
562 static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
568 if (ts->expire_time > current_time)
570 /* remove timer from the list before calling the callback */
571 *ptimer_head = ts->next;
574 /* run the callback (the timer list can be modified) */
579 int64_t qemu_get_clock(QEMUClock *clock)
581 switch(clock->type) {
582 case QEMU_TIMER_REALTIME:
584 return GetTickCount();
586 /* XXX: portability among Linux hosts */
587 if (timer_freq == 100) {
588 return times(NULL) * 10;
590 return ((int64_t)times(NULL) * 1000) / timer_freq;
594 case QEMU_TIMER_VIRTUAL:
595 return cpu_get_ticks();
600 void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
602 uint64_t expire_time;
604 if (qemu_timer_pending(ts)) {
605 expire_time = ts->expire_time;
609 qemu_put_be64(f, expire_time);
612 void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
614 uint64_t expire_time;
616 expire_time = qemu_get_be64(f);
617 if (expire_time != -1) {
618 qemu_mod_timer(ts, expire_time);
624 static void timer_save(QEMUFile *f, void *opaque)
626 if (cpu_ticks_enabled) {
627 hw_error("cannot save state if virtual timers are running");
629 qemu_put_be64s(f, &cpu_ticks_offset);
630 qemu_put_be64s(f, &ticks_per_sec);
633 static int timer_load(QEMUFile *f, void *opaque, int version_id)
637 if (cpu_ticks_enabled) {
640 qemu_get_be64s(f, &cpu_ticks_offset);
641 qemu_get_be64s(f, &ticks_per_sec);
646 void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg,
647 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
649 static void host_alarm_handler(int host_signum)
652 if (qemu_timer_expired(active_timers[QEMU_TIMER_VIRTUAL],
653 qemu_get_clock(vm_clock)) ||
654 qemu_timer_expired(active_timers[QEMU_TIMER_REALTIME],
655 qemu_get_clock(rt_clock))) {
656 /* stop the cpu because a timer occured */
657 cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
661 static void init_timers(void)
663 rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
664 vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
669 timerID = timeSetEvent(10, // interval (ms)
671 host_alarm_handler, // function
672 (DWORD)&count, // user parameter
673 TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
675 perror("failed timer alarm");
679 pit_min_timer_count = ((uint64_t)10000 * PIT_FREQ) / 1000000;
682 struct sigaction act;
683 struct itimerval itv;
685 /* get times() syscall frequency */
686 timer_freq = sysconf(_SC_CLK_TCK);
689 sigfillset(&act.sa_mask);
691 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
692 act.sa_flags |= SA_ONSTACK;
694 act.sa_handler = host_alarm_handler;
695 sigaction(SIGALRM, &act, NULL);
697 itv.it_interval.tv_sec = 0;
698 itv.it_interval.tv_usec = 1000;
699 itv.it_value.tv_sec = 0;
700 itv.it_value.tv_usec = 10 * 1000;
701 setitimer(ITIMER_REAL, &itv, NULL);
702 /* we probe the tick duration of the kernel to inform the user if
703 the emulated kernel requested a too high timer frequency */
704 getitimer(ITIMER_REAL, &itv);
705 pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) /
711 void quit_timers(void)
714 timeKillEvent(timerID);
718 /***********************************************************/
723 int serial_open_device(void)
730 int serial_open_device(void)
732 char slave_name[1024];
733 int master_fd, slave_fd;
735 if (serial_console == NULL && nographic) {
736 /* use console for serial port */
739 if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
740 fprintf(stderr, "warning: could not create pseudo terminal for serial port\n");
743 fprintf(stderr, "Serial port redirected to %s\n", slave_name);
750 /***********************************************************/
751 /* Linux network device redirector */
755 static int net_init(void)
760 void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
766 static int tun_open(char *ifname, int ifname_size)
771 fd = open("/dev/net/tun", O_RDWR);
773 fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
776 memset(&ifr, 0, sizeof(ifr));
777 ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
778 pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
779 ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
781 fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
785 printf("Connected to host network interface: %s\n", ifr.ifr_name);
786 pstrcpy(ifname, ifname_size, ifr.ifr_name);
787 fcntl(fd, F_SETFL, O_NONBLOCK);
791 static int net_init(void)
793 int pid, status, launch_script, i;
795 char *args[MAX_NICS + 2];
799 for(i = 0; i < nb_nics; i++) {
802 nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
809 /* try to launch network init script */
814 *parg++ = network_script;
815 for(i = 0; i < nb_nics; i++) {
818 *parg++ = nd->ifname;
822 execv(network_script, args);
825 while (waitpid(pid, &status, 0) != pid);
826 if (!WIFEXITED(status) ||
827 WEXITSTATUS(status) != 0) {
828 fprintf(stderr, "%s: could not launch network script\n",
836 void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
839 printf("NE2000: sending packet size=%d\n", size);
841 write(nd->fd, buf, size);
846 /***********************************************************/
851 static void term_exit(void)
855 static void term_init(void)
861 /* init terminal so that we can grab keys */
862 static struct termios oldtty;
864 static void term_exit(void)
866 tcsetattr (0, TCSANOW, &oldtty);
869 static void term_init(void)
876 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
877 |INLCR|IGNCR|ICRNL|IXON);
878 tty.c_oflag |= OPOST;
879 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
880 /* if graphical mode, we allow Ctrl-C handling */
882 tty.c_lflag &= ~ISIG;
883 tty.c_cflag &= ~(CSIZE|PARENB);
888 tcsetattr (0, TCSANOW, &tty);
892 fcntl(0, F_SETFL, O_NONBLOCK);
897 static void dumb_update(DisplayState *ds, int x, int y, int w, int h)
901 static void dumb_resize(DisplayState *ds, int w, int h)
905 static void dumb_refresh(DisplayState *ds)
907 vga_update_display();
910 void dumb_display_init(DisplayState *ds)
915 ds->dpy_update = dumb_update;
916 ds->dpy_resize = dumb_resize;
917 ds->dpy_refresh = dumb_refresh;
920 #if !defined(CONFIG_SOFTMMU)
921 /***********************************************************/
922 /* cpu signal handler */
923 static void host_segv_handler(int host_signum, siginfo_t *info,
926 if (cpu_signal_handler(host_signum, info, puc))
933 /***********************************************************/
936 #define MAX_IO_HANDLERS 64
938 typedef struct IOHandlerRecord {
940 IOCanRWHandler *fd_can_read;
941 IOReadHandler *fd_read;
946 struct IOHandlerRecord *next;
949 static IOHandlerRecord *first_io_handler;
951 int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read,
952 IOReadHandler *fd_read, void *opaque)
954 IOHandlerRecord *ioh;
956 ioh = qemu_mallocz(sizeof(IOHandlerRecord));
960 ioh->fd_can_read = fd_can_read;
961 ioh->fd_read = fd_read;
962 ioh->opaque = opaque;
963 ioh->next = first_io_handler;
964 first_io_handler = ioh;
968 void qemu_del_fd_read_handler(int fd)
970 IOHandlerRecord **pioh, *ioh;
972 pioh = &first_io_handler;
985 /***********************************************************/
986 /* savevm/loadvm support */
988 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
990 fwrite(buf, 1, size, f);
993 void qemu_put_byte(QEMUFile *f, int v)
998 void qemu_put_be16(QEMUFile *f, unsigned int v)
1000 qemu_put_byte(f, v >> 8);
1001 qemu_put_byte(f, v);
1004 void qemu_put_be32(QEMUFile *f, unsigned int v)
1006 qemu_put_byte(f, v >> 24);
1007 qemu_put_byte(f, v >> 16);
1008 qemu_put_byte(f, v >> 8);
1009 qemu_put_byte(f, v);
1012 void qemu_put_be64(QEMUFile *f, uint64_t v)
1014 qemu_put_be32(f, v >> 32);
1015 qemu_put_be32(f, v);
1018 int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
1020 return fread(buf, 1, size, f);
1023 int qemu_get_byte(QEMUFile *f)
1033 unsigned int qemu_get_be16(QEMUFile *f)
1036 v = qemu_get_byte(f) << 8;
1037 v |= qemu_get_byte(f);
1041 unsigned int qemu_get_be32(QEMUFile *f)
1044 v = qemu_get_byte(f) << 24;
1045 v |= qemu_get_byte(f) << 16;
1046 v |= qemu_get_byte(f) << 8;
1047 v |= qemu_get_byte(f);
1051 uint64_t qemu_get_be64(QEMUFile *f)
1054 v = (uint64_t)qemu_get_be32(f) << 32;
1055 v |= qemu_get_be32(f);
1059 int64_t qemu_ftell(QEMUFile *f)
1064 int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
1066 if (fseek(f, pos, whence) < 0)
1071 typedef struct SaveStateEntry {
1075 SaveStateHandler *save_state;
1076 LoadStateHandler *load_state;
1078 struct SaveStateEntry *next;
1081 static SaveStateEntry *first_se;
1083 int register_savevm(const char *idstr,
1086 SaveStateHandler *save_state,
1087 LoadStateHandler *load_state,
1090 SaveStateEntry *se, **pse;
1092 se = qemu_malloc(sizeof(SaveStateEntry));
1095 pstrcpy(se->idstr, sizeof(se->idstr), idstr);
1096 se->instance_id = instance_id;
1097 se->version_id = version_id;
1098 se->save_state = save_state;
1099 se->load_state = load_state;
1100 se->opaque = opaque;
1103 /* add at the end of list */
1105 while (*pse != NULL)
1106 pse = &(*pse)->next;
1111 #define QEMU_VM_FILE_MAGIC 0x5145564d
1112 #define QEMU_VM_FILE_VERSION 0x00000001
1114 int qemu_savevm(const char *filename)
1118 int len, len_pos, cur_pos, saved_vm_running, ret;
1120 saved_vm_running = vm_running;
1123 f = fopen(filename, "wb");
1129 qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
1130 qemu_put_be32(f, QEMU_VM_FILE_VERSION);
1132 for(se = first_se; se != NULL; se = se->next) {
1134 len = strlen(se->idstr);
1135 qemu_put_byte(f, len);
1136 qemu_put_buffer(f, se->idstr, len);
1138 qemu_put_be32(f, se->instance_id);
1139 qemu_put_be32(f, se->version_id);
1141 /* record size: filled later */
1143 qemu_put_be32(f, 0);
1145 se->save_state(f, se->opaque);
1147 /* fill record size */
1149 len = ftell(f) - len_pos - 4;
1150 fseek(f, len_pos, SEEK_SET);
1151 qemu_put_be32(f, len);
1152 fseek(f, cur_pos, SEEK_SET);
1158 if (saved_vm_running)
1163 static SaveStateEntry *find_se(const char *idstr, int instance_id)
1167 for(se = first_se; se != NULL; se = se->next) {
1168 if (!strcmp(se->idstr, idstr) &&
1169 instance_id == se->instance_id)
1175 int qemu_loadvm(const char *filename)
1179 int len, cur_pos, ret, instance_id, record_len, version_id;
1180 int saved_vm_running;
1184 saved_vm_running = vm_running;
1187 f = fopen(filename, "rb");
1193 v = qemu_get_be32(f);
1194 if (v != QEMU_VM_FILE_MAGIC)
1196 v = qemu_get_be32(f);
1197 if (v != QEMU_VM_FILE_VERSION) {
1204 len = qemu_get_byte(f);
1207 qemu_get_buffer(f, idstr, len);
1209 instance_id = qemu_get_be32(f);
1210 version_id = qemu_get_be32(f);
1211 record_len = qemu_get_be32(f);
1213 printf("idstr=%s instance=0x%x version=%d len=%d\n",
1214 idstr, instance_id, version_id, record_len);
1217 se = find_se(idstr, instance_id);
1219 fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n",
1220 instance_id, idstr);
1222 ret = se->load_state(f, se->opaque, version_id);
1224 fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
1225 instance_id, idstr);
1228 /* always seek to exact end of record */
1229 qemu_fseek(f, cur_pos + record_len, SEEK_SET);
1234 if (saved_vm_running)
1239 /***********************************************************/
1240 /* cpu save/restore */
1242 #if defined(TARGET_I386)
1244 static void cpu_put_seg(QEMUFile *f, SegmentCache *dt)
1246 qemu_put_be32(f, (uint32_t)dt->base);
1247 qemu_put_be32(f, dt->limit);
1248 qemu_put_be32(f, dt->flags);
1251 static void cpu_get_seg(QEMUFile *f, SegmentCache *dt)
1253 dt->base = (uint8_t *)qemu_get_be32(f);
1254 dt->limit = qemu_get_be32(f);
1255 dt->flags = qemu_get_be32(f);
1258 void cpu_save(QEMUFile *f, void *opaque)
1260 CPUState *env = opaque;
1261 uint16_t fptag, fpus, fpuc;
1265 for(i = 0; i < 8; i++)
1266 qemu_put_be32s(f, &env->regs[i]);
1267 qemu_put_be32s(f, &env->eip);
1268 qemu_put_be32s(f, &env->eflags);
1269 qemu_put_be32s(f, &env->eflags);
1270 hflags = env->hflags; /* XXX: suppress most of the redundant hflags */
1271 qemu_put_be32s(f, &hflags);
1275 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
1277 for (i=7; i>=0; i--) {
1279 if (env->fptags[i]) {
1284 qemu_put_be16s(f, &fpuc);
1285 qemu_put_be16s(f, &fpus);
1286 qemu_put_be16s(f, &fptag);
1288 for(i = 0; i < 8; i++) {
1291 cpu_get_fp80(&mant, &exp, env->fpregs[i]);
1292 qemu_put_be64(f, mant);
1293 qemu_put_be16(f, exp);
1296 for(i = 0; i < 6; i++)
1297 cpu_put_seg(f, &env->segs[i]);
1298 cpu_put_seg(f, &env->ldt);
1299 cpu_put_seg(f, &env->tr);
1300 cpu_put_seg(f, &env->gdt);
1301 cpu_put_seg(f, &env->idt);
1303 qemu_put_be32s(f, &env->sysenter_cs);
1304 qemu_put_be32s(f, &env->sysenter_esp);
1305 qemu_put_be32s(f, &env->sysenter_eip);
1307 qemu_put_be32s(f, &env->cr[0]);
1308 qemu_put_be32s(f, &env->cr[2]);
1309 qemu_put_be32s(f, &env->cr[3]);
1310 qemu_put_be32s(f, &env->cr[4]);
1312 for(i = 0; i < 8; i++)
1313 qemu_put_be32s(f, &env->dr[i]);
1316 qemu_put_be32s(f, &env->a20_mask);
1319 int cpu_load(QEMUFile *f, void *opaque, int version_id)
1321 CPUState *env = opaque;
1324 uint16_t fpus, fpuc, fptag;
1326 if (version_id != 1)
1328 for(i = 0; i < 8; i++)
1329 qemu_get_be32s(f, &env->regs[i]);
1330 qemu_get_be32s(f, &env->eip);
1331 qemu_get_be32s(f, &env->eflags);
1332 qemu_get_be32s(f, &env->eflags);
1333 qemu_get_be32s(f, &hflags);
1335 qemu_get_be16s(f, &fpuc);
1336 qemu_get_be16s(f, &fpus);
1337 qemu_get_be16s(f, &fptag);
1339 for(i = 0; i < 8; i++) {
1342 mant = qemu_get_be64(f);
1343 exp = qemu_get_be16(f);
1344 env->fpregs[i] = cpu_set_fp80(mant, exp);
1348 env->fpstt = (fpus >> 11) & 7;
1349 env->fpus = fpus & ~0x3800;
1350 for(i = 0; i < 8; i++) {
1351 env->fptags[i] = ((fptag & 3) == 3);
1355 for(i = 0; i < 6; i++)
1356 cpu_get_seg(f, &env->segs[i]);
1357 cpu_get_seg(f, &env->ldt);
1358 cpu_get_seg(f, &env->tr);
1359 cpu_get_seg(f, &env->gdt);
1360 cpu_get_seg(f, &env->idt);
1362 qemu_get_be32s(f, &env->sysenter_cs);
1363 qemu_get_be32s(f, &env->sysenter_esp);
1364 qemu_get_be32s(f, &env->sysenter_eip);
1366 qemu_get_be32s(f, &env->cr[0]);
1367 qemu_get_be32s(f, &env->cr[2]);
1368 qemu_get_be32s(f, &env->cr[3]);
1369 qemu_get_be32s(f, &env->cr[4]);
1371 for(i = 0; i < 8; i++)
1372 qemu_get_be32s(f, &env->dr[i]);
1375 qemu_get_be32s(f, &env->a20_mask);
1377 /* XXX: compute hflags from scratch, except for CPL and IIF */
1378 env->hflags = hflags;
1385 #warning No CPU save/restore functions
1389 /***********************************************************/
1390 /* ram save/restore */
1392 /* we just avoid storing empty pages */
1393 static void ram_put_page(QEMUFile *f, const uint8_t *buf, int len)
1398 for(i = 1; i < len; i++) {
1402 qemu_put_byte(f, 1);
1403 qemu_put_byte(f, v);
1406 qemu_put_byte(f, 0);
1407 qemu_put_buffer(f, buf, len);
1410 static int ram_get_page(QEMUFile *f, uint8_t *buf, int len)
1414 v = qemu_get_byte(f);
1417 if (qemu_get_buffer(f, buf, len) != len)
1421 v = qemu_get_byte(f);
1422 memset(buf, v, len);
1430 static void ram_save(QEMUFile *f, void *opaque)
1433 qemu_put_be32(f, phys_ram_size);
1434 for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
1435 ram_put_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
1439 static int ram_load(QEMUFile *f, void *opaque, int version_id)
1443 if (version_id != 1)
1445 if (qemu_get_be32(f) != phys_ram_size)
1447 for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
1448 ret = ram_get_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
1455 /***********************************************************/
1456 /* main execution loop */
1458 void gui_update(void *opaque)
1460 display_state.dpy_refresh(&display_state);
1461 qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
1464 /* XXX: support several handlers */
1465 VMStopHandler *vm_stop_cb;
1466 VMStopHandler *vm_stop_opaque;
1468 int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
1471 vm_stop_opaque = opaque;
1475 void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque)
1488 void vm_stop(int reason)
1491 cpu_disable_ticks();
1495 vm_stop_cb(vm_stop_opaque, reason);
1504 struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf;
1505 IOHandlerRecord *ioh, *ioh_next;
1510 CPUState *env = global_env;
1514 ret = cpu_exec(env);
1515 if (reset_requested) {
1516 ret = EXCP_INTERRUPT;
1519 if (ret == EXCP_DEBUG) {
1520 vm_stop(EXCP_DEBUG);
1522 /* if hlt instruction, we wait until the next IRQ */
1523 /* XXX: use timeout computed from timers */
1524 if (ret == EXCP_HLT)
1537 /* poll any events */
1538 /* XXX: separate device handlers from system ones */
1540 for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
1541 if (!ioh->fd_can_read) {
1544 pf->events = POLLIN;
1548 max_size = ioh->fd_can_read(ioh->opaque);
1550 if (max_size > sizeof(buf))
1551 max_size = sizeof(buf);
1553 pf->events = POLLIN;
1560 ioh->max_size = max_size;
1563 ret = poll(ufds, pf - ufds, timeout);
1565 /* XXX: better handling of removal */
1566 for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
1567 ioh_next = ioh->next;
1570 if (pf->revents & POLLIN) {
1571 if (ioh->max_size == 0) {
1572 /* just a read event */
1573 ioh->fd_read(ioh->opaque, NULL, 0);
1575 n = read(ioh->fd, buf, ioh->max_size);
1577 ioh->fd_read(ioh->opaque, buf, n);
1578 } else if (errno != -EAGAIN) {
1579 ioh->fd_read(ioh->opaque, NULL, -errno);
1589 qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL],
1590 qemu_get_clock(vm_clock));
1592 /* XXX: add explicit timer */
1595 /* run dma transfers, if any */
1599 /* real time timers */
1600 qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME],
1601 qemu_get_clock(rt_clock));
1603 cpu_disable_ticks();
1609 printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1610 "usage: %s [options] [disk_image]\n"
1612 "'disk_image' is a raw hard image image for IDE hard disk 0\n"
1614 "Standard options:\n"
1615 "-fda/-fdb file use 'file' as floppy disk 0/1 image\n"
1616 "-hda/-hdb file use 'file' as IDE hard disk 0/1 image\n"
1617 "-hdc/-hdd file use 'file' as IDE hard disk 2/3 image\n"
1618 "-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
1619 "-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
1620 "-snapshot write to temporary files instead of disk image files\n"
1621 "-m megs set virtual RAM size to megs MB\n"
1622 "-nographic disable graphical output and redirect serial I/Os to console\n"
1624 "Network options:\n"
1625 "-n script set network init script [default=%s]\n"
1626 "-nics n simulate 'n' network interfaces [default=1]\n"
1627 "-macaddr addr set the mac address of the first interface\n"
1628 "-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n"
1630 "Linux boot specific:\n"
1631 "-kernel bzImage use 'bzImage' as kernel image\n"
1632 "-append cmdline use 'cmdline' as kernel command line\n"
1633 "-initrd file use 'file' as initial ram disk\n"
1635 "Debug/Expert options:\n"
1636 "-s wait gdb connection to port %d\n"
1637 "-p port change gdb connection port\n"
1638 "-d item1,... output log to %s (use -d ? for a list of log items)\n"
1639 "-hdachs c,h,s force hard disk 0 geometry (usually qemu can guess it)\n"
1640 "-L path set the directory for the BIOS and VGA BIOS\n"
1641 #ifdef USE_CODE_COPY
1642 "-no-code-copy disable code copy acceleration\n"
1646 "During emulation, use C-a h to get terminal commands:\n",
1647 #ifdef CONFIG_SOFTMMU
1652 DEFAULT_NETWORK_SCRIPT,
1653 DEFAULT_GDBSTUB_PORT,
1656 #ifndef CONFIG_SOFTMMU
1658 "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
1659 "work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
1665 struct option long_options[] = {
1666 { "initrd", 1, NULL, 0, },
1667 { "hda", 1, NULL, 0, },
1668 { "hdb", 1, NULL, 0, },
1669 { "snapshot", 0, NULL, 0, },
1670 { "hdachs", 1, NULL, 0, },
1671 { "nographic", 0, NULL, 0, },
1672 { "kernel", 1, NULL, 0, },
1673 { "append", 1, NULL, 0, },
1674 { "tun-fd", 1, NULL, 0, },
1675 { "hdc", 1, NULL, 0, },
1676 { "hdd", 1, NULL, 0, },
1677 { "cdrom", 1, NULL, 0, },
1678 { "boot", 1, NULL, 0, },
1679 { "fda", 1, NULL, 0, },
1680 { "fdb", 1, NULL, 0, },
1681 { "no-code-copy", 0, NULL, 0 },
1682 { "nics", 1, NULL, 0 },
1683 { "macaddr", 1, NULL, 0 },
1684 { NULL, 0, NULL, 0 },
1687 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
1689 /* this stack is only used during signal handling */
1690 #define SIGNAL_STACK_SIZE 32768
1692 static uint8_t *signal_stack;
1696 int main(int argc, char **argv)
1698 #ifdef CONFIG_GDBSTUB
1699 int use_gdbstub, gdbstub_port;
1701 int c, i, long_index, has_cdrom;
1702 int snapshot, linux_boot;
1704 const char *initrd_filename;
1705 const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
1706 const char *kernel_filename, *kernel_cmdline;
1707 DisplayState *ds = &display_state;
1708 int cyls, heads, secs;
1711 #if !defined(CONFIG_SOFTMMU)
1712 /* we never want that malloc() uses mmap() */
1713 mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
1715 initrd_filename = NULL;
1716 for(i = 0; i < MAX_FD; i++)
1717 fd_filename[i] = NULL;
1718 for(i = 0; i < MAX_DISKS; i++)
1719 hd_filename[i] = NULL;
1720 ram_size = 32 * 1024 * 1024;
1721 vga_ram_size = VGA_RAM_SIZE;
1722 pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
1723 #ifdef CONFIG_GDBSTUB
1725 gdbstub_port = DEFAULT_GDBSTUB_PORT;
1729 kernel_filename = NULL;
1730 kernel_cmdline = "";
1732 cyls = heads = secs = 0;
1735 /* default mac address of the first network interface */
1743 for(i = 0; i < MAX_NICS; i++)
1744 nd_table[i].fd = -1;
1747 c = getopt_long_only(argc, argv, "hm:d:n:sp:L:", long_options, &long_index);
1752 switch(long_index) {
1754 initrd_filename = optarg;
1757 hd_filename[0] = optarg;
1760 hd_filename[1] = optarg;
1769 cyls = strtol(p, (char **)&p, 0);
1773 heads = strtol(p, (char **)&p, 0);
1777 secs = strtol(p, (char **)&p, 0);
1788 kernel_filename = optarg;
1791 kernel_cmdline = optarg;
1800 fd = strtol(p, (char **)&p, 0);
1801 nd_table[nb_nics].fd = fd;
1802 snprintf(nd_table[nb_nics].ifname,
1803 sizeof(nd_table[nb_nics].ifname),
1808 } else if (*p != '\0') {
1809 fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics);
1818 hd_filename[2] = optarg;
1822 hd_filename[3] = optarg;
1825 hd_filename[2] = optarg;
1829 boot_device = optarg[0];
1830 if (boot_device != 'a' && boot_device != 'b' &&
1831 boot_device != 'c' && boot_device != 'd') {
1832 fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
1837 fd_filename[0] = optarg;
1840 fd_filename[1] = optarg;
1843 code_copy_enabled = 0;
1846 nb_nics = atoi(optarg);
1847 if (nb_nics < 1 || nb_nics > MAX_NICS) {
1848 fprintf(stderr, "qemu: invalid number of network interfaces\n");
1857 for(i = 0; i < 6; i++) {
1858 macaddr[i] = strtol(p, (char **)&p, 16);
1865 fprintf(stderr, "qemu: invalid syntax for ethernet address\n");
1879 ram_size = atoi(optarg) * 1024 * 1024;
1882 if (ram_size > PHYS_RAM_MAX_SIZE) {
1883 fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
1884 PHYS_RAM_MAX_SIZE / (1024 * 1024));
1893 mask = cpu_str_to_log_mask(optarg);
1895 printf("Log items (comma separated):\n");
1896 for(item = cpu_log_items; item->mask != 0; item++) {
1897 printf("%-10s %s\n", item->name, item->help);
1905 pstrcpy(network_script, sizeof(network_script), optarg);
1907 #ifdef CONFIG_GDBSTUB
1912 gdbstub_port = atoi(optarg);
1921 if (optind < argc) {
1922 hd_filename[0] = argv[optind++];
1925 linux_boot = (kernel_filename != NULL);
1927 if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
1928 fd_filename[0] == '\0')
1931 /* boot to cd by default if no hard disk */
1932 if (hd_filename[0] == '\0' && boot_device == 'c') {
1933 if (fd_filename[0] != '\0')
1939 #if !defined(CONFIG_SOFTMMU)
1940 /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
1942 static uint8_t stdout_buf[4096];
1943 setvbuf(stdout, stdout_buf, _IOLBF, sizeof(stdout_buf));
1946 setvbuf(stdout, NULL, _IOLBF, 0);
1949 /* init host network redirectors */
1950 for(i = 0; i < MAX_NICS; i++) {
1951 NetDriverState *nd = &nd_table[i];
1952 /* init virtual mac address */
1953 nd->macaddr[0] = macaddr[0];
1954 nd->macaddr[1] = macaddr[1];
1955 nd->macaddr[2] = macaddr[2];
1956 nd->macaddr[3] = macaddr[3];
1957 nd->macaddr[4] = macaddr[4];
1958 nd->macaddr[5] = macaddr[5] + i;
1962 /* init the memory */
1963 phys_ram_size = ram_size + vga_ram_size;
1965 #ifdef CONFIG_SOFTMMU
1966 phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
1967 if (!phys_ram_base) {
1968 fprintf(stderr, "Could not allocate physical memory\n");
1972 /* as we must map the same page at several addresses, we must use
1977 tmpdir = getenv("QEMU_TMPDIR");
1980 snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
1981 if (mkstemp(phys_ram_file) < 0) {
1982 fprintf(stderr, "Could not create temporary memory file '%s'\n",
1986 phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
1987 if (phys_ram_fd < 0) {
1988 fprintf(stderr, "Could not open temporary memory file '%s'\n",
1992 ftruncate(phys_ram_fd, phys_ram_size);
1993 unlink(phys_ram_file);
1994 phys_ram_base = mmap(get_mmap_addr(phys_ram_size),
1996 PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED,
1998 if (phys_ram_base == MAP_FAILED) {
1999 fprintf(stderr, "Could not map physical memory\n");
2005 /* we always create the cdrom drive, even if no disk is there */
2007 bs_table[2] = bdrv_new("cdrom");
2008 bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
2011 /* open the virtual block devices */
2012 for(i = 0; i < MAX_DISKS; i++) {
2013 if (hd_filename[i]) {
2016 snprintf(buf, sizeof(buf), "hd%c", i + 'a');
2017 bs_table[i] = bdrv_new(buf);
2019 if (bdrv_open(bs_table[i], hd_filename[i], snapshot) < 0) {
2020 fprintf(stderr, "qemu: could not open hard disk image '%s\n",
2024 if (i == 0 && cyls != 0)
2025 bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs);
2029 /* we always create at least one floppy disk */
2030 fd_table[0] = bdrv_new("fda");
2031 bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY);
2033 for(i = 0; i < MAX_FD; i++) {
2034 if (fd_filename[i]) {
2037 snprintf(buf, sizeof(buf), "fd%c", i + 'a');
2038 fd_table[i] = bdrv_new(buf);
2039 bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY);
2041 if (fd_filename[i] != '\0') {
2042 if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) {
2043 fprintf(stderr, "qemu: could not open floppy disk image '%s\n",
2051 /* init CPU state */
2054 cpu_single_env = env;
2056 register_savevm("timer", 0, 1, timer_save, timer_load, env);
2057 register_savevm("cpu", 0, 1, cpu_save, cpu_load, env);
2058 register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
2061 cpu_calibrate_ticks();
2065 dumb_display_init(ds);
2068 sdl_display_init(ds);
2070 dumb_display_init(ds);
2074 /* setup cpu signal handlers for MMU / self modifying code handling */
2075 #if !defined(CONFIG_SOFTMMU)
2077 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2080 signal_stack = memalign(16, SIGNAL_STACK_SIZE);
2081 stk.ss_sp = signal_stack;
2082 stk.ss_size = SIGNAL_STACK_SIZE;
2085 if (sigaltstack(&stk, NULL) < 0) {
2086 perror("sigaltstack");
2092 struct sigaction act;
2094 sigfillset(&act.sa_mask);
2095 act.sa_flags = SA_SIGINFO;
2096 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2097 act.sa_flags |= SA_ONSTACK;
2099 act.sa_sigaction = host_segv_handler;
2100 sigaction(SIGSEGV, &act, NULL);
2101 sigaction(SIGBUS, &act, NULL);
2102 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
2103 sigaction(SIGFPE, &act, NULL);
2110 struct sigaction act;
2111 sigfillset(&act.sa_mask);
2113 act.sa_handler = SIG_IGN;
2114 sigaction(SIGPIPE, &act, NULL);
2119 #if defined(TARGET_I386)
2120 pc_init(ram_size, vga_ram_size, boot_device,
2121 ds, fd_filename, snapshot,
2122 kernel_filename, kernel_cmdline, initrd_filename);
2123 #elif defined(TARGET_PPC)
2127 /* launched after the device init so that it can display or not a
2131 gui_timer = qemu_new_timer(rt_clock, gui_update, NULL);
2132 qemu_mod_timer(gui_timer, qemu_get_clock(rt_clock));
2134 #ifdef CONFIG_GDBSTUB
2136 if (gdbserver_start(gdbstub_port) < 0) {
2137 fprintf(stderr, "Could not open gdbserver socket on port %d\n",
2141 printf("Waiting gdb connection on port %d\n", gdbstub_port);