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/*
* Copyright (c) 2010-2014 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdarg.h>
#include <stdio.h>
#include <kern/atomic.h>
#include <kern/init.h>
#include <kern/panic.h>
#include <machine/cpu.h>
#include <machine/strace.h>
static unsigned int panic_done;
void
panic(const char *format, ...)
{
cpu_halt();
va_list list;
unsigned long already_done;
already_done = atomic_swap(&panic_done, 1, ATOMIC_SEQ_CST);
if (already_done) {
for (;;) {
cpu_idle();
}
}
cpu_intr_disable();
cpu_halt_broadcast();
printf("\npanic: ");
va_start(list, format);
vprintf(format, list);
printf("\n");
strace_dump();
cpu_halt();
/*
* Never reached.
*/
}
static int __init
panic_setup(void)
{
return 0;
}
INIT_OP_DEFINE(panic_setup,
INIT_OP_DEP(cpu_setup, true),
INIT_OP_DEP(printf_setup, true),
INIT_OP_DEP(strace_setup, true));
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