Merge in big portions of the improvements NetBSD did to their alpha port.

Highlights: UVM, PMAP_NEW, bus_dma (only on some buses for now), new hardware
support, possiblity for ELF, etc, etc. Too much to mention.

This is still work in progress. video consoles might be broken, otherwise
we have basically the same functionality as before plus more.

1 files changed, 117 insertions, 0 deletions

diff --git a/sys/arch/alpha/include/bwx.h b/sys/arch/alpha/include/bwx.h
new file mode 100644
index 00000000000..c24cb1f03fd
--- /dev/null
+++ b/sys/arch/alpha/include/bwx.h
@@ -0,0 +1,117 @@
+/* $NetBSD: bwx.h,v 1.3 2000/06/08 02:55:37 thorpej Exp $ */
+
+/*-
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _ALPHA_BWX_H_
+#define	_ALPHA_BWX_H_
+
+/*
+ * Alpha Byte/Word Extension instructions.
+ *
+ * These instructions are available on EV56 (21164A) and later processors.
+ *
+ * See "Alpha Architecture Handbook, Version 3", DEC order number EC-QD2KB-TE.
+ */
+
+static __inline u_int8_t
+alpha_ldbu(__volatile u_int8_t *a0)
+{
+	u_int8_t v0;
+
+	__asm __volatile("ldbu %0, %1"
+		: "=r" (v0)
+		: "m" (*a0));
+
+	return (v0);
+}
+
+static __inline u_int16_t
+alpha_ldwu(__volatile u_int16_t *a0)
+{
+	u_int16_t v0;
+
+	__asm __volatile("ldwu %0, %1"
+		: "=r" (v0)
+		: "m" (*a0));
+
+	return (v0);
+}
+
+static __inline void
+alpha_stb(__volatile u_int8_t *a0, u_int8_t a1)
+{
+
+	__asm __volatile("stb %1, %0"
+		: "=m" (*a0)
+		: "r" (a1));
+}
+
+static __inline void
+alpha_stw(__volatile u_int16_t *a0, u_int16_t a1)
+{
+
+	__asm __volatile("stw %1, %0"
+		: "=m" (*a0)
+		: "r" (a1));
+}
+
+static __inline u_int8_t
+alpha_sextb(u_int8_t a0)
+{
+	u_int8_t v0;
+
+	__asm __volatile("sextb %1, %0"
+		: "=r" (v0)
+		: "r" (a0));
+
+	return (v0);
+}
+
+static __inline u_int16_t
+alpha_sextw(u_int16_t a0)
+{
+	u_int16_t v0;
+
+	__asm __volatile("sextw %1, %0"
+		: "=r" (v0)
+		: "r" (a0));
+
+	return (v0);
+}
+
+#endif /* _ALPHA_BWX_H_ */