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kernel/linux-rt-4.4.41/arch/m68k/sun3/prom/printf.c 922 Bytes
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  /*
   * printf.c:  Internal prom library printf facility.
   *
   * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   */
  
  /* This routine is internal to the prom library, no one else should know
   * about or use it!  It's simple and smelly anyway....
   */
  
  #include <linux/kernel.h>
  
  #include <asm/openprom.h>
  #include <asm/oplib.h>
  
  #ifdef CONFIG_KGDB
  extern int kgdb_initialized;
  #endif
  
  static char ppbuf[1024];
  
  void
  prom_printf(char *fmt, ...)
  {
  	va_list args;
  	char ch, *bptr;
  	int i;
  
  	va_start(args, fmt);
  
  #ifdef CONFIG_KGDB
  	ppbuf[0] = 'O';
  	i = vsprintf(ppbuf + 1, fmt, args) + 1;
  #else
  	i = vsprintf(ppbuf, fmt, args);
  #endif
  
  	bptr = ppbuf;
  
  #ifdef CONFIG_KGDB
  	if (kgdb_initialized) {
  		printk("kgdb_initialized = %d
  ", kgdb_initialized);
  		putpacket(bptr, 1);
  	} else
  #else
  	while((ch = *(bptr++)) != 0) {
  		if(ch == '
  ')
  			prom_putchar('\r');
  
  		prom_putchar(ch);
  	}
  #endif
  	va_end(args);
  	return;
  }