97 lines
1.6 KiB
C
97 lines
1.6 KiB
C
/*
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* Copyright (c) 2015, 2021 Intel Corporation.
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* Copyright (c) 2021 Synopsys.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdio.h>
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#include <zephyr/sys/libc-hooks.h>
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#include <zephyr/internal/syscall_handler.h>
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#include <string.h>
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#include <zephyr/sys/errno_private.h>
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#include <unistd.h>
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#include <errno.h>
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#ifndef STDIN_FILENO
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#define STDIN_FILENO 0
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#endif
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#ifndef STDOUT_FILENO
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#define STDOUT_FILENO 1
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#endif
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#ifndef STDERR_FILENO
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#define STDERR_FILENO 2
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#endif
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static int _stdout_hook_default(int c)
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{
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ARG_UNUSED(c);
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return EOF;
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}
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static int (*_stdout_hook)(int) = _stdout_hook_default;
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void __stdout_hook_install(int (*hook)(int))
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{
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_stdout_hook = hook;
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}
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int z_impl_zephyr_write_stdout(const void *buffer, int nbytes)
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{
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const char *buf = buffer;
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int i;
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for (i = 0; i < nbytes; i++) {
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if (*(buf + i) == '\n') {
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_stdout_hook('\r');
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}
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_stdout_hook(*(buf + i));
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}
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return nbytes;
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}
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#ifdef CONFIG_USERSPACE
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static inline int z_vrfy_zephyr_write_stdout(const void *buf, int nbytes)
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{
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K_OOPS(K_SYSCALL_MEMORY_READ(buf, nbytes));
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return z_impl_zephyr_write_stdout(buf, nbytes);
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}
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#include <zephyr/syscalls/zephyr_write_stdout_mrsh.c>
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#endif
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#ifndef CONFIG_POSIX_API
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int _write(int fd, const char *buf, unsigned int nbytes)
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{
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ARG_UNUSED(fd);
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return zephyr_write_stdout(buf, nbytes);
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}
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#endif
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/*
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* It's require to implement _isatty to have STDIN/STDOUT/STDERR buffered
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* properly.
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*/
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int _isatty(int file)
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{
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if (file == STDIN_FILENO || file == STDOUT_FILENO || file == STDERR_FILENO) {
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return 1;
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}
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return 0;
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}
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int *___errno(void)
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{
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return z_errno();
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}
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__weak void _exit(int status)
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{
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while (1) {
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}
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}
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