/*- * 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. * * @(#)cpu.h 5.4 (Berkeley) 5/9/91 * * cpu.h,v 1.1.1.1 1993/09/09 23:53:46 phil Exp */ /* * Definitions unique to ns532 cpu support. * * modified from 386 code for the pc532 by Phil Nelson (12/92) */ #include "machine/psl.h" #include "machine/frame.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 */ #define NEED_FFS /* need ffs function */ #define NEED_BCMP /* need bcmp function */ #define 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) ((framep)->if_psr & PSR_USR) #define CLKF_BASEPRI(framep) ((framep)->if_pl == ~PL_zero) #define CLKF_PC(framep) ((framep)->if_pc) #define resettodr() /* no todr to set */ #ifdef KERNEL #include "../../pc532/icu.h" #endif /* * 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 */