arm-trusted-firmware/lib/libc/printf.c
Roberto Vargas 61f72a3425 Create a library file for libc
TF Makefile was linking all the objects files generated for the
c library instead of creating a static library that could be
used in the linking stage.

Change-Id: I721daea097e9b13cbb42c9f8eaa2af8fea0799cf
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
2018-08-03 11:31:33 +01:00

36 lines
653 B
C

/*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdio.h>
#include <stdarg.h>
/* Choose max of 128 chars for now. */
#define PRINT_BUFFER_SIZE 128
int printf(const char *fmt, ...)
{
va_list args;
char buf[PRINT_BUFFER_SIZE];
int count;
va_start(args, fmt);
vsnprintf(buf, sizeof(buf) - 1, fmt, args);
va_end(args);
/* Use putchar directly as 'puts()' adds a newline. */
buf[PRINT_BUFFER_SIZE - 1] = '\0';
count = 0;
while (buf[count])
{
if (putchar(buf[count]) != EOF) {
count++;
} else {
count = EOF;
break;
}
}
return count;
}