116 lines
3.9 KiB
C
116 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 1.9 1993/06/16 22:28:12 jtc Exp $
|
|
*/
|
|
|
|
/*
|
|
* Definitions unique to i386 cpu support.
|
|
*/
|
|
#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 */
|
|
|
|
/*
|
|
* function vs. inline configuration;
|
|
* these are defined to get generic functions
|
|
* rather than inline or machine-dependent implementations
|
|
*/
|
|
#define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */
|
|
#undef NEED_FFS /* need ffs function */
|
|
#define NEED_BCMP /* need bcmp function */
|
|
#undef NEED_STRLEN /* need strlen function */
|
|
|
|
#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.
|
|
*/
|
|
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 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++; 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() (astpending++)
|
|
|
|
int astpending; /* need to trap before returning to user mode */
|
|
int want_resched; /* resched() was called */
|
|
|
|
/*
|
|
* 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
|