altos: Rename 'core' to 'kernel'

[fw/altos] / src / kernel / ao_int64.h

diff --git a/src/kernel/ao_int64.h b/src/kernel/ao_int64.h
new file mode 100644 (file)
index 0000000..b16db58
--- /dev/null
+++ b/src/kernel/ao_int64.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright © 2013 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_INT64_H_
+#define _AO_INT64_H_
+
+#include <stdint.h>
+
+typedef struct {
+       uint32_t        high;
+       uint32_t        low;
+} ao_int64_t;
+
+#define __FATTR
+#define __ARG __pdata
+#define __LOCAL static __pdata
+
+void ao_plus64(__pdata ao_int64_t *ao_64r, __pdata ao_int64_t *ao_64a, __pdata ao_int64_t *ao_64b) __FATTR;
+void ao_minus64(__pdata ao_int64_t *ao_64r, __pdata ao_int64_t *ao_64a, __pdata ao_int64_t *ao_64b) __FATTR;
+void ao_neg64(__pdata ao_int64_t *ao_64r, __pdata ao_int64_t *ao_64a) __FATTR;
+void ao_rshift64(__pdata ao_int64_t *ao_64r, __pdata ao_int64_t *ao_64a, uint8_t d) __FATTR;
+void ao_lshift64(__pdata ao_int64_t *ao_64r, __pdata ao_int64_t *ao_64a, uint8_t d) __FATTR;
+void ao_mul64_32_32(__ARG ao_int64_t *r, __ARG int32_t a, __ARG int32_t b) __FATTR;
+void ao_mul64_64_16(__ARG ao_int64_t *r, __ARG ao_int64_t *a, __ARG uint16_t b) __FATTR;
+void ao_mul64(__ARG ao_int64_t * __ARG r, __ARG ao_int64_t * __ARG a, __ARG ao_int64_t *__ARG b) __FATTR;
+
+#define ao_int64_init32(r, a) (((r)->high = 0), (r)->low = (a))
+#define ao_int64_init64(r, a, b) (((r)->high = (a)), (r)->low = (b))
+
+#define ao_cast64(a) (((int64_t) (a)->high << 32) | (a)->low)
+
+#define ao_int64_negativep(a)  (((int32_t) (a)->high) < 0)
+
+#endif /* _AO_INT64_H_ */