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/**
* \file
*
* \brief Syscalls for SAM0 (GCC).
*
* Copyright (C) 2012-2016 Atmel Corporation. All rights reserved.
*
* \asf_license_start
*
* \page License
*
* 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. The name of Atmel may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 4. This software may only be redistributed and used in connection with an
* Atmel microcontroller product.
*
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
*
* \asf_license_stop
*
*/
/*
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
*/
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef __cplusplus
extern "C" {
#endif
#undef errno
extern int errno;
extern int _end;
extern caddr_t _sbrk(int incr);
extern int link(char *old, char *new);
extern int _close(int file);
extern int _fstat(int file, struct stat *st);
extern int _isatty(int file);
extern int _lseek(int file, int ptr, int dir);
extern void _exit(int status);
extern void _kill(int pid, int sig);
extern int _getpid(void);
extern caddr_t _sbrk(int incr)
{
static unsigned char *heap = NULL;
unsigned char *prev_heap;
if (heap == NULL) {
heap = (unsigned char *)&_end;
}
prev_heap = heap;
heap += incr;
return (caddr_t) prev_heap;
}
extern int link(char *old, char *new)
{
return -1;
}
extern int _close(int file)
{
return -1;
}
extern int _fstat(int file, struct stat *st)
{
st->st_mode = S_IFCHR;
return 0;
}
extern int _isatty(int file)
{
return 1;
}
extern int _lseek(int file, int ptr, int dir)
{
return 0;
}
extern void _exit(int status)
{
asm("BKPT #0");
for (;;);
}
extern void _kill(int pid, int sig)
{
return;
}
extern int _getpid(void)
{
return -1;
}
#ifdef __cplusplus
}
#endif
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