1 files changed, 152 insertions, 0 deletions
diff --git a/hal/utils/src/utils_syscalls.c b/hal/utils/src/utils_syscalls.c
new file mode 100644
index 0000000..79e2f1f
--- /dev/null
+++ b/hal/utils/src/utils_syscalls.c
@@ -0,0 +1,152 @@
+/**
+ * \file
+ *
+ * \brief Syscalls for SAM0 (GCC).
+ *
+ * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Subject to your compliance with these terms, you may use Microchip
+ * software and any derivatives exclusively with Microchip products.
+ * It is your responsibility to comply with third party license terms applicable
+ * to your use of third party software (including open source software) that
+ * may accompany Microchip software.
+ *
+ * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
+ * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
+ * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
+ * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
+ * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
+ * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
+ * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
+ * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE FULLEST EXTENT
+ * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
+ * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
+ * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
+ *
+ * \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