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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 1.4 1993/11/07 17:42:46 wollman Exp $
*/
#ifndef _MACHINE_CPU_H_
#define _MACHINE_CPU_H_ 1
/*
* Definitions unique to i386 cpu support.
*/
#include "machine/frame.h"
#include "machine/segments.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 */
/*
* Arguments to hardclock, softclock and gatherstats
* encapsulate the previous machine state in an opaque
* clockframe; for now, use generic intrframe.
* XXX softclock() has been fixed. It never needed a
* whole frame, only a usermode flag, at least on this
* machine. Fix the rest.
*/
typedef struct intrframe clockframe;
#define CLKF_USERMODE(framep) (ISPL((framep)->if_cs) == SEL_UPL)
#define CLKF_BASEPRI(framep) (((framep)->if_ppl & ~SWI_AST_MASK) == 0)
#define CLKF_PC(framep) ((framep)->if_eip)
/*
* 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 profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; 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;
};
#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_ */
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