1 files changed, 118 insertions, 0 deletions
diff --git a/sys/i386/include/cpu.h b/sys/i386/include/cpu.h
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+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * William Jolitz.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	from: @(#)cpu.h	5.4 (Berkeley) 5/9/91
+ *	$Id: cpu.h,v 1.6 1994/05/25 08:55:47 rgrimes Exp $
+ */
+
+#ifndef _MACHINE_CPU_H_
+#define _MACHINE_CPU_H_ 1
+
+/*
+ * Definitions unique to i386 cpu support.
+ */
+#include <machine/frame.h>
+#include <machine/segments.h>
+#include <machine/spl.h>
+
+/*
+ * definitions of cpu-dependent requirements
+ * referenced in generic code
+ */
+#undef	COPY_SIGCODE		/* don't copy sigcode above user stack in exec */
+
+#define	cpu_exec(p)	/* nothing */
+#define cpu_swapin(p)	/* nothing */
+#define cpu_setstack(p, ap)		(p)->p_md.md_regs = ap
+#define cpu_set_init_frame(p, fp)	(p)->p_md.md_regs = fp
+
+#define	CLKF_USERMODE(framep)	(ISPL((framep)->cf_cs) == SEL_UPL)
+#define CLKF_INTR(framep)	(0)
+#define	CLKF_BASEPRI(framep)	(((framep)->cf_ppl & ~SWI_AST_MASK) == 0)
+#define	CLKF_PC(framep)		((framep)->cf_eip)
+
+#define resettodr()	/* no todr to set */
+
+/*
+ * Preempt the current process if in interrupt from user mode,
+ * or after the current trap/syscall if in system mode.
+ */
+#define	need_resched()	{ want_resched = 1; aston(); }
+
+/*
+ * Give a profiling tick to the current process from the softclock
+ * interrupt.  On tahoe, request an ast to send us through trap(),
+ * marking the proc as needing a profiling tick.
+ */
+#define	need_proftick(p)	{ (p)->p_flag |= P_OWEUPC; aston(); }
+
+/*
+ * Notify the current process (p) that it has a signal pending,
+ * process as soon as possible.
+ */
+#define	signotify(p)	aston()
+
+#define aston()	setsoftast()
+#define astoff()
+
+/*
+ * pull in #defines for kinds of processors
+ */
+#include "machine/cputypes.h"
+
+struct cpu_nameclass {
+	char *cpu_name;
+	int  cpu_class;
+};
+
+/*
+ * CTL_MACHDEP definitions.
+ */
+#define CPU_CONSDEV		1	/* dev_t: console terminal device */
+#define CPU_MAXID		2	/* number of valid machdep ids */
+
+#define CTL_MACHDEP_NAMES { \
+	{ 0, 0 }, \
+	{ "console_device", CTLTYPE_STRUCT }, \
+}
+
+#ifdef KERNEL
+extern int want_resched;	/* resched was called */
+
+extern int cpu;
+extern int cpu_class;
+extern struct cpu_nameclass i386_cpus[];
+#endif
+#endif /* _MACHINE_CPU_H_ */