| // SPDX-License-Identifier: BSD-2-Clause |
| /* |
| * Copyright (c) 2014, STMicroelectronics International N.V. |
| */ |
| |
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include <string_ext.h> |
| #include <trace.h> |
| #include <util.h> |
| #include <utee_syscalls.h> |
| |
| #if TRACE_LEVEL > 0 |
| |
| void trace_ext_puts(const char *str) |
| { |
| utee_log(str, strlen(str)); |
| } |
| |
| int trace_ext_get_thread_id(void) |
| { |
| return -1; |
| } |
| |
| /* |
| * printf and puts - stdio printf support |
| * |
| * 'printf()' and 'puts()' traces have the 'info' trace level. |
| */ |
| int printf(const char *fmt, ...) |
| { |
| char to_format[MAX_PRINT_SIZE]; |
| va_list ap; |
| int s; |
| |
| if (trace_get_level() < TRACE_PRINTF_LEVEL) |
| return 0; |
| |
| va_start(ap, fmt); |
| s = vsnprintf(to_format, sizeof(to_format), fmt, ap); |
| va_end(ap); |
| |
| if (s < 0) |
| return s; |
| |
| trace_ext_puts(to_format); |
| |
| return s; |
| } |
| |
| int puts(const char *str) |
| { |
| if (trace_get_level() >= TRACE_PRINTF_LEVEL) { |
| trace_ext_puts(str); |
| trace_ext_puts("\n"); |
| } |
| return 1; |
| } |
| |
| int putchar(int c) |
| { |
| char str[2] = { (char)c, '\0' }; |
| |
| if (trace_get_level() >= TRACE_PRINTF_LEVEL) |
| trace_ext_puts(str); |
| /* |
| * From the putchar() man page: |
| * "fputc(), putc() and putchar() return the character written as an |
| * unsigned char cast to an int or EOF on error." |
| */ |
| return (int)(unsigned char)c; |
| } |
| |
| #else |
| |
| int printf(const char *fmt __unused, ...) |
| { |
| return 0; |
| } |
| |
| int puts(const char *str __unused) |
| { |
| return 0; |
| } |
| |
| int putchar(int c) |
| { |
| return (int)(unsigned char)c; |
| } |
| |
| #endif |