void
do_panic_reboot (void)
{
int d;
printf ("Reboot in 5 seconds...\n");
sleep_set_timer_counter ();
usleep (5 * 1000000);
printf ("Rebooting...");
usleep (1 * 1000000);
d = msgopen ("reboot");
if (d >= 0) {
msgsendint (d, 0);
msgclose (d);
printf ("Reboot failed.\n");
} else
printf ("reboot not found.\n");
}
static void
do_boot_guest (void)
{
enable = false;
/* clear screen */
vramwrite_clearscreen ();
/* printf ("init pic\n"); */
asm_outb (0x20, 0x11);
asm_outb (0x21, 0x8);
asm_outb (0x21, 0x4);
asm_outb (0x21, 0x1);
asm_outb (0xA0, 0x11);
asm_outb (0xA1, 0x70);
asm_outb (0xA1, 0x2);
asm_outb (0xA1, 0x1);
asm_outb (0x21, 0xFC);
asm_outb (0xA1, 0xFF);
/* printf ("init pit\n"); */
sleep_set_timer_counter ();
/* printf ("sleep 1 sec\n"); */
usleep (1000000);
/* printf ("Starting\n"); */
reinitialize_vm (true, boot_drive);
}
panic (char *format, ...)
{
u64 time;
int count;
va_list ap;
ulong curstk;
bool w = false;
char *p, *pend;
int cpunum = -1;
static int panic_count = 0;
static ulong panic_shell = 0;
struct panic_pcpu_data_state *state, local_state;
va_start (ap, format);
if (currentcpu_available ())
cpunum = get_cpu_id ();
if (cpunum >= 0) {
spinlock_lock (&panic_lock);
count = panic_count++;
spinlock_unlock (&panic_lock);
wait_for_other_cpu (cpunum);
p = panicmsg_tmp;
pend = panicmsg_tmp + sizeof panicmsg_tmp;
if (panic_reboot)
*p = '\0';
else
snprintf (p, pend - p, "panic(CPU%d): ", cpunum);
p += strlen (p);
vsnprintf (p, pend - p, format, ap);
if (*p != '\0') {
printf ("%s\n", panicmsg_tmp);
if (panicmsg[0] == '\0')
snprintf (panicmsg, sizeof panicmsg, "%s",
panicmsg_tmp);
}
asm_rdrsp (&curstk);
if (count > 5 ||
curstk - (ulong)currentcpu->stackaddr < VMM_MINSTACKSIZE) {
spinlock_lock (&panic_lock);
paniccpu = -1;
spinlock_unlock (&panic_lock);
freeze ();
}
state = ¤tcpu->panic.state;
} else {
spinlock_lock (&panic_lock);
count = panic_count++;
printf ("panic: ");
vprintf (format, ap);
printf ("\n");
spinlock_unlock (&panic_lock);
if (count)
freeze ();
state = &local_state;
state->dump_vmm = false;
state->backtrace = false;
state->flag_dump_vm = false;
}
va_end (ap);
if (!state->dump_vmm) {
state->dump_vmm = true;
catch_exception (cpunum, dump_vmm_control_regs);
catch_exception (cpunum, dump_vmm_other_regs);
state->dump_vmm = false;
}
if (!state->backtrace) {
state->backtrace = true;
catch_exception (cpunum, backtrace);
state->backtrace = false;
}
if (cpunum >= 0 && current && !state->flag_dump_vm) {
/* Guest state is printed only once. Because the
* state will not change if panic will have been
* called twice or more. */
state->flag_dump_vm = true;
printf ("Guest state and registers of cpu %d ------------\n",
cpunum);
catch_exception (cpunum, dump_vm_general_regs);
catch_exception (cpunum, dump_vm_control_regs);
catch_exception (cpunum, dump_vm_sregs);
catch_exception (cpunum, dump_vm_other_regs);
printf ("------------------------------------------------\n");
}
if (cpunum < 0)
freeze ();
if (do_wakeup) {
do_wakeup = false;
w = true;
}
spinlock_lock (&panic_lock);
paniccpu = -1;
spinlock_unlock (&panic_lock);
if (w) {
sleep_set_timer_counter ();
panic_wakeup_all ();
}
call_initfunc ("panic");
if (cpunum == 0) {
usleep (1000000); /* wait for dump of other processors */
#ifndef TTY_SERIAL
setkbdled (LED_NUMLOCK_BIT | LED_SCROLLLOCK_BIT |
LED_CAPSLOCK_BIT);
if (!uefi_booted) {
disable_apic ();
if (bios_area_saved)
copy_bios_area (bios_area_panic,
bios_area_orig);
callrealmode_setvideomode
(VIDEOMODE_80x25TEXT_16COLORS);
if (bios_area_saved)
copy_bios_area (NULL, bios_area_panic);
if (panic_reboot)
printf ("%s\n", panicmsg);
}
keyboard_reset ();
usleep (250000);
setkbdled (LED_SCROLLLOCK_BIT | LED_CAPSLOCK_BIT);
#endif
} else {
/* setvideomode is expected to be done in 3 seconds */
time = get_time ();
while (get_time () - time < 3000000);
}
if (asm_lock_ulong_swap (&panic_shell, 1)) {
for (;;)
reboot_test ();
clihlt ();
}
if (panic_reboot)
do_panic_reboot ();
printf ("%s\n", panicmsg);
call_panic_shell ();
}