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173 lines
5.1 KiB
C
173 lines
5.1 KiB
C
/*
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ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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* **** This file incorporates work covered by the following copyright and ****
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* **** permission notice: ****
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*
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* Copyright (c) 2009 by Michael Fischer. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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****************************************************************************
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* History:
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*
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* 28.03.09 mifi First Version, based on the original syscall.c from
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* newlib version 1.17.0
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* 17.08.09 gdisirio Modified the file for use under ChibiOS/RT
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* 15.11.09 gdisirio Added read and write handling
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****************************************************************************/
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "ch.h"
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#if defined(STDOUT_SD) || defined(STDIN_SD)
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#include "hal.h"
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#endif
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/***************************************************************************/
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__attribute__((used))
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int _read_r(struct _reent *r, int file, char * ptr, int len) {
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(void)r;
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#if defined(STDIN_SD)
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if (!len || (file != 0)) {
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__errno_r(r) = EINVAL;
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return -1;
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}
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len = sdRead(&STDIN_SD, (uint8_t *)ptr, (size_t)len);
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return len;
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#else
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(void)file;
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(void)ptr;
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(void)len;
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__errno_r(r) = EINVAL;
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return -1;
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#endif
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}
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/***************************************************************************/
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__attribute__((used))
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int _lseek_r(struct _reent *r, int file, int ptr, int dir) {
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(void)r;
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(void)file;
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(void)ptr;
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(void)dir;
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return 0;
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}
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/***************************************************************************/
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__attribute__((used))
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int _write_r(struct _reent *r, int file, char * ptr, int len) {
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(void)r;
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(void)file;
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(void)ptr;
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#if defined(STDOUT_SD)
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if (file != 1) {
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__errno_r(r) = EINVAL;
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return -1;
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}
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sdWrite(&STDOUT_SD, (uint8_t *)ptr, (size_t)len);
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#endif
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return len;
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}
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/***************************************************************************/
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__attribute__((used))
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int _close_r(struct _reent *r, int file) {
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(void)r;
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(void)file;
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return 0;
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}
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/***************************************************************************/
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__attribute__((used))
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caddr_t _sbrk_r(struct _reent *r, int incr) {
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#if CH_CFG_USE_MEMCORE
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void *p;
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chDbgCheck(incr >= 0);
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p = chCoreAllocFromBase((size_t)incr, 1U, 0U);
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if (p == NULL) {
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__errno_r(r) = ENOMEM;
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return (caddr_t)-1;
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}
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return (caddr_t)p;
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#else
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(void)incr;
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__errno_r(r) = ENOMEM;
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return (caddr_t)-1;
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#endif
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}
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/***************************************************************************/
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__attribute__((used))
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int _fstat_r(struct _reent *r, int file, struct stat * st) {
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(void)r;
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(void)file;
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memset(st, 0, sizeof(*st));
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st->st_mode = S_IFCHR;
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return 0;
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}
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/***************************************************************************/
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__attribute__((used))
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int _isatty_r(struct _reent *r, int fd) {
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(void)r;
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(void)fd;
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return 1;
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}
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/*** EOF ***/
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