lib/libc/armstdc/src/libc-hooks.c

/*
 * Copyright (c) 2021 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/kernel.h>
#include <stdio.h>

static int _stdout_hook_default(int c)
{
	(void)(c);  /* Prevent warning about unused argument */

	return EOF;
}

static int (*_stdout_hook)(int) = _stdout_hook_default;

void __stdout_hook_install(int (*hook)(int))
{
	_stdout_hook = hook;
}

volatile int *__aeabi_errno_addr(void)
{
	return &_current->errno_var;
}

int fputc(int c, FILE *f)
{
	return (_stdout_hook)(c);
}