4 * \brief Syscalls for SAM (GCC).
\r
6 * Copyright (c) 2011-2015 Atmel Corporation. All rights reserved.
\r
12 * Redistribution and use in source and binary forms, with or without
\r
13 * modification, are permitted provided that the following conditions are met:
\r
15 * 1. Redistributions of source code must retain the above copyright notice,
\r
16 * this list of conditions and the following disclaimer.
\r
18 * 2. Redistributions in binary form must reproduce the above copyright notice,
\r
19 * this list of conditions and the following disclaimer in the documentation
\r
20 * and/or other materials provided with the distribution.
\r
22 * 3. The name of Atmel may not be used to endorse or promote products derived
\r
23 * from this software without specific prior written permission.
\r
25 * 4. This software may only be redistributed and used in connection with an
\r
26 * Atmel microcontroller product.
\r
28 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
\r
29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
\r
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
\r
31 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
\r
32 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\r
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\r
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\r
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
\r
36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
\r
37 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
\r
38 * POSSIBILITY OF SUCH DAMAGE.
\r
44 * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
\r
49 #include <sys/types.h>
\r
50 #include <sys/stat.h>
\r
63 extern int __ram_end__;
\r
65 extern caddr_t _sbrk(int incr);
\r
66 extern int link(char *old, char *new);
\r
67 extern int _close(int file);
\r
68 extern int _fstat(int file, struct stat *st);
\r
69 extern int _isatty(int file);
\r
70 extern int _lseek(int file, int ptr, int dir);
\r
71 extern void _exit(int status);
\r
72 extern void _kill(int pid, int sig);
\r
73 extern int _getpid(void);
\r
75 extern caddr_t _sbrk(int incr)
\r
77 static unsigned char *heap = NULL;
\r
78 unsigned char *prev_heap;
\r
79 int ramend = (int)&__ram_end__;
\r
82 heap = (unsigned char *)&_end;
\r
86 if (((int)prev_heap + incr) > ramend) {
\r
87 return (caddr_t) -1;
\r
92 return (caddr_t) prev_heap;
\r
95 extern int link(char *old, char *new)
\r
102 extern int _close(int file)
\r
108 extern int _fstat(int file, struct stat *st)
\r
110 st->st_mode = S_IFCHR;
\r
116 extern int _isatty(int file)
\r
122 extern int _lseek(int file, int ptr, int dir)
\r
130 extern void _exit(int status)
\r
132 printf("Exiting with status %d.\n", status);
\r
137 extern void _kill(int pid, int sig)
\r
144 extern int _getpid(void)
\r