release/src-rt-6.x.4708/linux/linux-2.6.36/arch/m68k/sun3/prom/printf.c

   1 /*
   2  * printf.c:  Internal prom library printf facility.
   3  *
   4  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   5  */
   6
   7 /* This routine is internal to the prom library, no one else should know
   8  * about or use it!  It's simple and smelly anyway....
   9  */
  10
  11 #include <linux/kernel.h>
  12
  13 #include <asm/openprom.h>
  14 #include <asm/oplib.h>
  15
  16 #ifdef CONFIG_KGDB
  17 extern int kgdb_initialized;
  18 #endif
  19
  20 static char ppbuf[1024];
  21
  22 void
  23 prom_printf(char *fmt, ...)
  24 {
  25         va_list args;
  26         char ch, *bptr;
  27         int i;
  28
  29         va_start(args, fmt);
  30
  31 #ifdef CONFIG_KGDB
  32         ppbuf[0] = 'O';
  33         i = vsprintf(ppbuf + 1, fmt, args) + 1;
  34 #else
  35         i = vsprintf(ppbuf, fmt, args);
  36 #endif
  37
  38         bptr = ppbuf;
  39
  40 #ifdef CONFIG_KGDB
  41         if (kgdb_initialized) {
  42                 printk("kgdb_initialized = %d\n", kgdb_initialized);
  43                 putpacket(bptr, 1);
  44         } else
  45 #else
  46         while((ch = *(bptr++)) != 0) {
  47                 if(ch == '\n')
  48                         prom_putchar('\r');
  49
  50                 prom_putchar(ch);
  51         }
  52 #endif
  53         va_end(args);
  54         return;
  55 }