LXR linux/arch/alpha/lib/srm

   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
   9long
  10srm_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}
  43