/** | |
* \file | |
* | |
* \brief Syscalls for SAM (GCC). | |
* | |
* Copyright (c) 2011-2015 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> | |
/// @cond 0 | |
/**INDENT-OFF**/ | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/**INDENT-ON**/ | |
/// @endcond | |
#undef errno | |
extern int errno; | |
extern int _end; | |
extern int __ram_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; | |
int ramend = (int)&__ram_end__; | |
if (heap == NULL) { | |
heap = (unsigned char *)&_end; | |
} | |
prev_heap = heap; | |
if (((int)prev_heap + incr) > ramend) { | |
return (caddr_t) -1; | |
} | |
heap += incr; | |
return (caddr_t) prev_heap; | |
} | |
extern int link(char *old, char *new) | |
{ | |
( void ) old; | |
( void ) new; | |
return -1; | |
} | |
extern int _close(int file) | |
{ | |
( void ) file; | |
return -1; | |
} | |
extern int _fstat(int file, struct stat *st) | |
{ | |
st->st_mode = S_IFCHR; | |
( void ) file; | |
return 0; | |
} | |
extern int _isatty(int file) | |
{ | |
( void ) file; | |
return 1; | |
} | |
extern int _lseek(int file, int ptr, int dir) | |
{ | |
( void ) file; | |
( void ) ptr; | |
( void ) dir; | |
return 0; | |
} | |
extern void _exit(int status) | |
{ | |
printf("Exiting with status %d.\n", status); | |
for (;;); | |
} | |
extern void _kill(int pid, int sig) | |
{ | |
( void ) pid; | |
( void ) sig; | |
return; | |
} | |
extern int _getpid(void) | |
{ | |
return -1; | |
} | |
/// @cond 0 | |
/**INDENT-OFF**/ | |
#ifdef __cplusplus | |
} | |
#endif | |
/**INDENT-ON**/ | |
/// @endcond |