1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <stdarg.h>
33 #include <stdio.h>
34 #include "securec.h"
35 #include "uart.h"
36 #include "los_debug.h"
37 #include "los_interrupt.h"
38
dputs(char const * s,int (* pFputc)(int n,FILE * cookie),void * cookie)39 static void dputs(char const *s, int (*pFputc)(int n, FILE *cookie), void *cookie)
40 {
41 unsigned int intSave;
42
43 intSave = LOS_IntLock();
44 while (*s) {
45 pFputc(*s++, cookie);
46 }
47 LOS_IntRestore(intSave);
48 }
49
printf(char const * fmt,...)50 int printf(char const *fmt, ...)
51 {
52 #define BUFSIZE 256
53 char buf[BUFSIZE] = { 0 };
54 va_list ap;
55 va_start(ap, fmt);
56 int len = vsnprintf_s(buf, sizeof(buf), BUFSIZE - 1, fmt, ap);
57 va_end(ap);
58 if (len > 0) {
59 dputs(buf, UartPutc, 0);
60 } else {
61 dputs("printf error!\n", UartPutc, 0);
62 }
63 return len;
64 }
65