162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0
262306a36Sopenharmony_ci/*
362306a36Sopenharmony_ci *	arch/alpha/lib/srm_printk.c
462306a36Sopenharmony_ci */
562306a36Sopenharmony_ci
662306a36Sopenharmony_ci#include <linux/kernel.h>
762306a36Sopenharmony_ci#include <asm/console.h>
862306a36Sopenharmony_ci
962306a36Sopenharmony_cilong
1062306a36Sopenharmony_cisrm_printk(const char *fmt, ...)
1162306a36Sopenharmony_ci{
1262306a36Sopenharmony_ci	static char buf[1024];
1362306a36Sopenharmony_ci	va_list args;
1462306a36Sopenharmony_ci	long len, num_lf;
1562306a36Sopenharmony_ci	char *src, *dst;
1662306a36Sopenharmony_ci
1762306a36Sopenharmony_ci	va_start(args, fmt);
1862306a36Sopenharmony_ci	len = vsprintf(buf, fmt, args);
1962306a36Sopenharmony_ci	va_end(args);
2062306a36Sopenharmony_ci
2162306a36Sopenharmony_ci	/* count number of linefeeds in string: */
2262306a36Sopenharmony_ci
2362306a36Sopenharmony_ci	num_lf = 0;
2462306a36Sopenharmony_ci	for (src = buf; *src; ++src) {
2562306a36Sopenharmony_ci		if (*src == '\n') {
2662306a36Sopenharmony_ci			++num_lf;
2762306a36Sopenharmony_ci		}
2862306a36Sopenharmony_ci	}
2962306a36Sopenharmony_ci
3062306a36Sopenharmony_ci	if (num_lf) {
3162306a36Sopenharmony_ci		/* expand each linefeed into carriage-return/linefeed: */
3262306a36Sopenharmony_ci		for (dst = src + num_lf; src >= buf; ) {
3362306a36Sopenharmony_ci			if (*src == '\n') {
3462306a36Sopenharmony_ci				*dst-- = '\r';
3562306a36Sopenharmony_ci			}
3662306a36Sopenharmony_ci			*dst-- = *src--;
3762306a36Sopenharmony_ci		}
3862306a36Sopenharmony_ci	}
3962306a36Sopenharmony_ci
4062306a36Sopenharmony_ci	srm_puts(buf, num_lf+len);
4162306a36Sopenharmony_ci        return len;
4262306a36Sopenharmony_ci}
43