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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* **** This file incorporates work covered by the following copyright and ****
* **** permission notice: ****
*
* Copyright (c) 2009 by Michael Fischer. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
****************************************************************************
* History:
*
* 28.03.09 mifi First Version, based on the original syscall.c from
* newlib version 1.17.0
* 17.08.09 gdisirio Modified the file for use under ChibiOS/RT
* 15.11.09 gdisirio Added read and write handling
****************************************************************************/
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "ch.h"
#if defined(STDOUT_SD) || defined(STDIN_SD)
#include "hal.h"
#endif
/***************************************************************************/
int _read_r(struct _reent *r, int file, char * ptr, int len)
{
(void)r;
#if defined(STDIN_SD)
if (!len || (file != 0)) {
__errno_r(r) = EINVAL;
return -1;
}
len = sdRead(&STDIN_SD, (uint8_t *)ptr, (size_t)len);
return len;
#else
(void)file;
(void)ptr;
(void)len;
__errno_r(r) = EINVAL;
return -1;
#endif
}
/***************************************************************************/
int _lseek_r(struct _reent *r, int file, int ptr, int dir)
{
(void)r;
(void)file;
(void)ptr;
(void)dir;
return 0;
}
/***************************************************************************/
int _write_r(struct _reent *r, int file, char * ptr, int len)
{
(void)r;
(void)file;
(void)ptr;
#if defined(STDOUT_SD)
if (file != 1) {
__errno_r(r) = EINVAL;
return -1;
}
sdWrite(&STDOUT_SD, (uint8_t *)ptr, (size_t)len);
#endif
return len;
}
/***************************************************************************/
int _close_r(struct _reent *r, int file)
{
(void)r;
(void)file;
return 0;
}
/***************************************************************************/
caddr_t _sbrk_r(struct _reent *r, int incr)
{
#if CH_USE_MEMCORE
void *p;
chDbgCheck(incr > 0, "_sbrk_r");
(void)r;
p = chCoreAlloc((size_t)incr);
if (p == NULL) {
__errno_r(r) = ENOMEM;
return (caddr_t)-1;
}
return (caddr_t)p;
#else
__errno_r(r) = ENOMEM;
return (caddr_t)-1;
#endif
}
/***************************************************************************/
int _fstat_r(struct _reent *r, int file, struct stat * st)
{
(void)r;
(void)file;
memset(st, 0, sizeof(*st));
st->st_mode = S_IFCHR;
return 0;
}
/***************************************************************************/
int _isatty_r(struct _reent *r, int fd)
{
(void)r;
(void)fd;
return 1;
}
/*** EOF ***/
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