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- /**
- * \file
- *
- * \brief Syscalls for SAM0 (GCC).
- *
- * Copyright (C) 2015-2016 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
- *
- */
-
- #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);
-
- /**
- * \brief Replacement of C library of _sbrk
- */
- 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;
- }
-
- /**
- * \brief Replacement of C library of link
- */
- extern int link(char *old, char *_new)
- {
- (void)old, (void)_new;
- return -1;
- }
-
- /**
- * \brief Replacement of C library of _close
- */
- extern int _close(int file)
- {
- (void)file;
- return -1;
- }
-
- /**
- * \brief Replacement of C library of _fstat
- */
- extern int _fstat(int file, struct stat *st)
- {
- (void)file;
- st->st_mode = S_IFCHR;
-
- return 0;
- }
-
- /**
- * \brief Replacement of C library of _isatty
- */
- extern int _isatty(int file)
- {
- (void)file;
- return 1;
- }
-
- /**
- * \brief Replacement of C library of _lseek
- */
- extern int _lseek(int file, int ptr, int dir)
- {
- (void)file, (void)ptr, (void)dir;
- return 0;
- }
-
- /**
- * \brief Replacement of C library of _exit
- */
- extern void _exit(int status)
- {
- printf("Exiting with status %d.\n", status);
-
- for (;;)
- ;
- }
-
- /**
- * \brief Replacement of C library of _kill
- */
- extern void _kill(int pid, int sig)
- {
- (void)pid, (void)sig;
- return;
- }
-
- /**
- * \brief Replacement of C library of _getpid
- */
- extern int _getpid(void)
- {
- return -1;
- }
-
- #ifdef __cplusplus
- }
- #endif
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