1 /* 2 * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <stdio.h> 8 #include <stdarg.h> 9 10 /* Choose max of 128 chars for now. */ 11 #define PRINT_BUFFER_SIZE 128 12 int printf(const char *fmt, ...) 13 { 14 va_list args; 15 char buf[PRINT_BUFFER_SIZE]; 16 int count; 17 18 va_start(args, fmt); 19 vsnprintf(buf, sizeof(buf) - 1, fmt, args); 20 va_end(args); 21 22 /* Use putchar directly as 'puts()' adds a newline. */ 23 buf[PRINT_BUFFER_SIZE - 1] = '\0'; 24 count = 0; 25 while (buf[count]) 26 { 27 if (putchar(buf[count]) != EOF) { 28 count++; 29 } else { 30 count = EOF; 31 break; 32 } 33 } 34 35 return count; 36 } 37