arch/alpha/lib/srm_printk.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *      arch/alpha/lib/srm_printk.c
   4  */
   5
   6 #include <linux/kernel.h>
   7 #include <asm/console.h>
   8
   9 long
  10 srm_printk(const char *fmt, ...)
  11 {
  12         static char buf[1024];
  13         va_list args;
  14         long len, num_lf;
  15         char *src, *dst;
  16
  17         va_start(args, fmt);
  18         len = vsprintf(buf, fmt, args);
  19         va_end(args);
  20
  21         /* count number of linefeeds in string: */
  22
  23         num_lf = 0;
  24         for (src = buf; *src; ++src) {
  25                 if (*src == '\n') {
  26                         ++num_lf;
  27                 }
  28         }
  29
  30         if (num_lf) {
  31                 /* expand each linefeed into carriage-return/linefeed: */
  32                 for (dst = src + num_lf; src >= buf; ) {
  33                         if (*src == '\n') {
  34                                 *dst-- = '\r';
  35                         }
  36                         *dst-- = *src--;
  37                 }
  38         }
  39
  40         srm_puts(buf, num_lf+len);
  41         return len;
  42 }