lib/panic.c

   1 /*
   2  *  linux/lib/vsprintf.c
   3  *
   4  *  Copyright (C) 1991, 1992  Linus Torvalds
   5  */
   6
   7 /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
   8 /*
   9  * Wirzenius wrote this portably, Torvalds fucked it up :-)
  10  */
  11
  12 #include <hang.h>
  13 #if !defined(CONFIG_PANIC_HANG)
  14 #include <command.h>
  15 #endif
  16 #include <linux/delay.h>
  17 #include <stdio.h>
  18
  19 static void panic_finish(void) __attribute__ ((noreturn));
  20
  21 static void panic_finish(void)
  22 {
  23         putc('\n');
  24 #if defined(CONFIG_PANIC_HANG)
  25         hang();
  26 #else
  27         flush();  /* flush the panic message before reset */
  28
  29         do_reset(NULL, 0, 0, NULL);
  30 #endif
  31         while (1)
  32                 ;
  33 }
  34
  35 void panic_str(const char *str)
  36 {
  37         puts(str);
  38         panic_finish();
  39 }
  40
  41 void panic(const char *fmt, ...)
  42 {
  43 #if CONFIG_IS_ENABLED(PRINTF)
  44         va_list args;
  45         va_start(args, fmt);
  46         vprintf(fmt, args);
  47         va_end(args);
  48 #endif
  49         panic_finish();
  50 }
  51
  52 void __assert_fail(const char *assertion, const char *file, unsigned int line,
  53                    const char *function)
  54 {
  55         /* This will not return */
  56         panic("%s:%u: %s: Assertion `%s' failed.", file, line, function,
  57               assertion);
  58 }