altos/lisp: Clean up OS integration bits, add defun

Provide an abstraction for the OS interface so that it
can build more cleanly on Linux and AltOS. Add defun macro.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/src/lisp/ao_lisp_os.h b/src/lisp/ao_lisp_os.h
new file mode 100644
index 00000000..55ffed50
--- /dev/null
+++ b/src/lisp/ao_lisp_os.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright © 2016 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _AO_LISP_OS_H_
+#define _AO_LISP_OS_H_
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+static inline int
+ao_lisp_getc() {
+	return getchar();
+}
+
+static inline void
+ao_lisp_abort(void)
+{
+	abort();
+}
+
+static inline void
+ao_lisp_os_led(int led)
+{
+	printf("leds set to 0x%x\n", led);
+}
+
+static inline void
+ao_lisp_os_delay(int delay)
+{
+	struct timespec ts = {
+		.tv_sec = delay / 1000,
+		.tv_nsec = (delay % 1000) * 1000000,
+	};
+	nanosleep(&ts, NULL);
+}
+#endif