NetBSD/sys/arch/i386/include/cpu.h

118 lines
3.9 KiB
C

/*-
* 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 1.12 1993/12/17 00:10:49 mycroft Exp $
*/
/*
* Definitions unique to i386 cpu support.
*/
#include <machine/psl.h>
#include <machine/frame.h>
#include <machine/segments.h>
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define COPY_SIGCODE /* 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 intrframe has a lot of gunk we don't need.
*/
typedef struct intrframe clockframe;
#define CLKF_USERMODE(framep) (ISPL((framep)->if_cs) == SEL_UPL)
#define CLKF_BASEPRI(framep) ((framep)->if_ppl == 0)
#define CLKF_PC(framep) ((framep)->if_eip)
#define CLKF_INTR(framep) (0) /* XXX should have an interrupt stack */
/*
* Software interrupt request `register'.
*/
int sir;
#define SIR_AST 0
#define SIR_NET 1
#define SIR_CLOCK 2
#define softintr(n) (sir |= 1 << (n))
#define setsoftnet() softintr(SIR_NET)
#define setsoftclock() softintr(SIR_CLOCK)
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
int want_resched; /* resched() was called */
#define need_resched() (want_resched = 1, softintr(SIR_AST))
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the i386, 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, softintr(SIR_AST))
#define need_proftick(p) ((p)->p_flag |= SOWEUPC, softintr(SIR_AST))
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
#define signotify(p) softintr(SIR_AST)
/*
* pull in #defines for kinds of processors
*/
#include "machine/cputypes.h"
struct cpu_nameclass {
char *cpu_name;
int cpu_class;
};
#ifdef KERNEL
extern int cpu;
extern int cpu_class;
extern struct cpu_nameclass i386_cpus[];
#endif