130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/**
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* \file
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*
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* \brief Syscalls for SAM0 (GCC).
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*
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* Copyright (C) 2012-2016 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* \asf_license_stop
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*
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*/
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/*
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* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#undef errno
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extern int errno;
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extern int _end;
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extern caddr_t _sbrk(int incr);
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extern int link(char *old, char *new);
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extern int _close(int file);
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extern int _fstat(int file, struct stat *st);
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extern int _isatty(int file);
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extern int _lseek(int file, int ptr, int dir);
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extern void _exit(int status);
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extern void _kill(int pid, int sig);
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extern int _getpid(void);
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extern caddr_t _sbrk(int incr)
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{
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static unsigned char *heap = NULL;
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unsigned char *prev_heap;
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if (heap == NULL) {
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heap = (unsigned char *)&_end;
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}
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prev_heap = heap;
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heap += incr;
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return (caddr_t) prev_heap;
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}
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extern int link(char *old, char *new)
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{
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return -1;
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}
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extern int _close(int file)
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{
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return -1;
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}
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extern int _fstat(int file, struct stat *st)
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{
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st->st_mode = S_IFCHR;
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return 0;
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}
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extern int _isatty(int file)
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{
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return 1;
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}
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extern int _lseek(int file, int ptr, int dir)
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{
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return 0;
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}
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// extern void _exit(int status)
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// {
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// asm("BKPT #0");
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// }
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extern void _kill(int pid, int sig)
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{
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return;
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}
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extern int _getpid(void)
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{
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return -1;
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}
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#ifdef __cplusplus
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}
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#endif
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