142 lines
4.3 KiB
C
142 lines
4.3 KiB
C
/* $NetBSD: cpu.h,v 1.29 2013/10/19 19:20:59 christos Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: cpu.h 1.16 91/03/25$
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*
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* @(#)cpu.h 8.4 (Berkeley) 1/5/94
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*/
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#ifndef _MACHINE_CPU_H_
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#define _MACHINE_CPU_H_
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#if defined(_KERNEL_OPT)
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#include "opt_lockdebug.h"
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#include "opt_m68k_arch.h"
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#endif
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/*
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* Get common m68k CPU definitions.
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*/
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#include <m68k/cpu.h>
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#if defined(_KERNEL)
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/*
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* Arguments to hardclock and gatherstats encapsulate the previous
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* machine state in an opaque clockframe. One the hp300, we use
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* what the hardware pushes on an interrupt (frame format 0).
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*/
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struct clockframe {
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u_short sr; /* sr at time of interrupt */
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u_long pc; /* pc at time of interrupt */
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u_short vo; /* vector offset (4-word frame) */
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} __attribute__((packed));
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#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
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#define CLKF_PC(framep) ((framep)->pc)
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#if 0
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/* We would like to do it this way... */
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#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
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#else
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/* but until we start using PSL_M, we have to do this instead */
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#define CLKF_INTR(framep) (0) /* XXX */
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#endif
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/*
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* Preempt the current process if in interrupt from user mode,
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* or after the current trap/syscall if in system mode.
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*/
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#define cpu_need_resched(ci,flags) do { \
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__USE(flags); \
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ci->ci_want_resched = 1; \
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aston(); \
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} while (/*CONSTCOND*/0)
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/*
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* Give a profiling tick to the current process when the user profiling
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* buffer pages are invalid. On the hp300, request an ast to send us
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* through trap, marking the proc as needing a profiling tick.
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*/
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#define cpu_need_proftick(l) \
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do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0)
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/*
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* Notify the current process (p) that it has a signal pending,
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* process as soon as possible.
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*/
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#define cpu_signotify(l) aston()
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extern int astpending; /* need to trap before returning to user mode */
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#define aston() (astpending++)
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#endif /* _KERNEL */
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/*
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* CTL_MACHDEP definitions.
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*/
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#define CPU_CONSDEV 1 /* dev_t: console terminal device */
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#define CPU_MAXID 2 /* number of valid machdep ids */
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#ifdef _KERNEL
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#ifndef M68040
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#define M68040
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#endif /* ! M68040 */
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#ifndef M68K_MMU_MOTOROLA
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#define M68K_MMU_MOTOROLA
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#endif /* ! M68K_MMU_MOTOROLA */
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/* locore.s functions */
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int suline(void *, void *);
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void loadustp(int);
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void doboot(void)
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__attribute__((__noreturn__));
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/* machdep.c functions */
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int badaddr(void *);
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int badbaddr(void *);
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void kgdb_panic(void);
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/* what is this supposed to do? i.e. how is it different than startrtclock? */
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#define enablertclock()
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#endif /* _KERNEL */
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#endif /* _MACHINE_CPU_H_ */
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