initial import of NetBSD tree

1 files changed, 106 insertions, 0 deletions

diff --git a/sys/arch/sun3/include/psl.h b/sys/arch/sun3/include/psl.h
new file mode 100644
index 00000000000..d716133399c
--- /dev/null
+++ b/sys/arch/sun3/include/psl.h
@@ -0,0 +1,106 @@
+/*	$NetBSD: psl.h,v 1.8 1995/10/10 21:28:00 gwr Exp $	*/
+
+/*
+ * Copyright (c) 1995 Gordon W. Ross
+ * All rights reserved.
+ *
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 4. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Gordon Ross
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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	PSL_C
+#include <m68k/psl.h>
+
+/* Could define this in the common <m68k/psl.h> instead. */
+
+#if defined(_KERNEL) && !defined(LOCORE)
+
+#ifndef __GNUC__
+/* No inline, use real function in locore.s */
+extern int _spl(int new);
+#else	/* GNUC */
+/*
+ * Define an inline function for PSL manipulation.
+ * This is as close to a macro as one can get.
+ * If not optimizing, the one in locore.s is used.
+ * (See the GCC extensions info document.)
+ */
+extern __inline__ int _spl(int new)
+{
+	register int old;
+
+	__asm __volatile (
+		"clrl %0; movew sr,%0; movew %1,sr" :
+			"&=d" (old) : "di" (new));
+	return (old);
+}
+#endif	/* GNUC */
+
+/*
+ * The rest of this is sun3 specific, because other ports may
+ * need to do special things in spl0() (i.e. simulate SIR).
+ * Suns have a REAL interrupt register, so spl0() and splx(s)
+ * have no need to check for any simulated interrupts, etc.
+ */
+
+#define spl0()  _spl(PSL_S|PSL_IPL0)
+#define spl1()  _spl(PSL_S|PSL_IPL1)
+#define spl2()  _spl(PSL_S|PSL_IPL2)
+#define spl3()  _spl(PSL_S|PSL_IPL3)
+#define spl4()  _spl(PSL_S|PSL_IPL4)
+#define spl5()  _spl(PSL_S|PSL_IPL5)
+#define spl6()  _spl(PSL_S|PSL_IPL6)
+#define spl7()  _spl(PSL_S|PSL_IPL7)
+#define splx(x)	_spl(x)
+
+/* IPL used by soft interrupts: netintr(), softclock() */
+#define splsoftclock()  spl1()
+#define splsoftnet()    spl1()
+
+/* Highest block device (strategy) IPL. */
+#define splbio()        spl2()
+
+/* Highest network interface IPL. */
+#define splnet()        spl3()
+
+/* Highest tty device IPL. */
+#define spltty()        spl4()
+
+/* Requirement: imp >= (highest network, tty, or disk IPL) */
+#define splimp()        spl4()
+
+/* Intersil clock hardware interrupts (hard-wired at 5) */
+#define splclock()      spl5()
+#define splstatclock()  splclock()
+
+/* Zilog Serial hardware interrupts (hard-wired at 6) */
+#define splzs()         spl6()
+
+/* Block out all interrupts (except NMI of course). */
+#define splhigh()       spl7()
+#define splsched()      spl7()
+
+#endif	/* KERNEL && !LOCORE */
+#endif	/* PSL_C */