adjust root folder

ports/stm32f10x/drivers/src/syscalls.c

@@ -0,0 +1,157 @@
+/*
+ *
+ * 		Atollic TrueSTUDIO Minimal System calls file
+ *
+ * 		For more information about which c-functions
+ * 		need which of these lowlevel functions
+ * 		please consult the Newlib libc-manual
+ *
+ * */
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdio.h>
+#include <signal.h>
+#include <time.h>
+#include <sys/time.h>
+#include <sys/times.h>
+
+#undef errno
+extern int errno;
+extern int __io_putchar(int ch);
+
+register char * stack_ptr asm("sp");
+
+char *__env[1] = { 0 };
+char **environ = __env;
+
+void initialise_monitor_handles()
+{
+}
+
+int _getpid(void)
+{
+	return 1;
+}
+
+int _kill(int pid, int sig)
+{
+	errno = EINVAL;
+	return -1;
+}
+
+void _exit (int status)
+{
+	_kill(status, -1);
+	while (1) {}		/* Make sure we hang here */
+}
+
+int _write(int file, char *ptr, int len)
+{
+	   int todo;
+
+	   for (todo = 0; todo < len; todo++)
+	   {
+	      __io_putchar( *ptr++ );
+	   }
+
+	/* Implement your write code here, this is used by puts and printf for example */
+	return len;
+}
+
+caddr_t _sbrk(int incr)
+{
+	extern char end asm("end");
+	static char *heap_end;
+	char *prev_heap_end;
+
+	if (heap_end == 0)
+		heap_end = &end;
+
+	prev_heap_end = heap_end;
+	if (heap_end + incr > stack_ptr)
+	{
+//		write(1, "Heap and stack collision\n", 25);
+//		abort();
+		errno = ENOMEM;
+		return (caddr_t) -1;
+	}
+
+	heap_end += incr;
+
+	return (caddr_t) prev_heap_end;
+}
+
+int _close(int file)
+{
+	return -1;
+}
+
+
+int _fstat(int file, struct stat *st)
+{
+	st->st_mode = S_IFCHR;
+	return 0;
+}
+
+int _isatty(int file)
+{
+	return 1;
+}
+
+int _lseek(int file, int ptr, int dir)
+{
+	return 0;
+}
+
+int _read(int file, char *ptr, int len)
+{
+	return 0;
+}
+
+int _open(char *path, int flags, ...)
+{
+	/* Pretend like we always fail */
+	return -1;
+}
+
+int _wait(int *status)
+{
+	errno = ECHILD;
+	return -1;
+}
+
+int _unlink(char *name)
+{
+	errno = ENOENT;
+	return -1;
+}
+
+int _times(struct tms *buf)
+{
+	return -1;
+}
+
+int _stat(char *file, struct stat *st)
+{
+	st->st_mode = S_IFCHR;
+	return 0;
+}
+
+int _link(char *old, char *new)
+{
+	errno = EMLINK;
+	return -1;
+}
+
+int _fork(void)
+{
+	errno = EAGAIN;
+	return -1;
+}
+
+int _execve(char *name, char **argv, char **env)
+{
+	errno = ENOMEM;
+	return -1;
+}