mirror of
https://github.com/RIOT-OS/RIOT.git
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136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
/*
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* Copyright (C) 2014 René Kijewski <rene.kijewski@fu-berlin.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @ingroup x86
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* @{
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*
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* @file
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* @brief The interface between newlib and kernel functions.
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*
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* @author René Kijewski <rene.kijewski@fu-berlin.de>
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*
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* @}
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*/
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#include "kernel_defines.h"
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#include "cpu.h"
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#include "sched.h"
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#include "x86_uart.h"
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#include <signal.h>
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#include <sys/stat.h>
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#include <unistd.h>
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void _exit(int status)
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{
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(void) status;
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sched_task_exit();
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UNREACHABLE();
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}
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#ifndef MODULE_POSIX
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/* Already defined in /sys/posix/unistd.c */
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int close(int fildes)
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{
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/* TODO */
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(void) fildes;
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return -1;
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}
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#endif
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pid_t getpid(void)
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{
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return (pid_t) sched_active_pid;
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}
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int fstat(int fildes, struct stat *buf)
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{
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/* TODO */
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(void) fildes;
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(void) buf;
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return -1;
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}
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int isatty(int fildes)
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{
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/* TODO */
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(void) fildes;
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return 0; /* sic */
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}
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int kill(pid_t pid, int sig)
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{
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/* TODO */
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(void) pid;
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(void) sig;
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return -1;
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}
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off_t lseek(int fildes, off_t offset, int whence)
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{
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/* TODO */
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(void) fildes;
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(void) offset;
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(void) whence;
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return (off_t) -1;
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}
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ssize_t read(int fildes, void *buf, size_t nbyte)
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{
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if (nbyte == 0) {
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/* allow reading nothing from every FD ... */
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return 0;
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}
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else if (fildes == STDOUT_FILENO || fildes == STDERR_FILENO) {
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/* cannot read from STDOUT or STDERR */
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return -1;
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}
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else if (fildes == STDIN_FILENO) {
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return x86_uart_read(buf, nbyte);
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}
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/* TODO: find appropriate FILE */
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(void) fildes;
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(void) buf;
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(void) nbyte;
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return -1;
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}
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ssize_t write(int fildes, const void *buf, size_t nbyte)
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{
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if (nbyte == 0) {
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/* allow writing nothing to every FD ... */
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return 0;
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}
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else if (fildes == STDIN_FILENO) {
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/* cannot write to STDIN */
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return -1;
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}
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else if (fildes == STDOUT_FILENO || fildes == STDERR_FILENO) {
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return x86_uart_write(buf, nbyte);
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}
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/* TODO: find appropriate FILE */
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(void) fildes;
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(void) buf;
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(void) nbyte;
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return -1;
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}
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