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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.
- *
- * @(#)cpu.h 5.4 (Berkeley) 5/9/91
- */
-
- /*
- * 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 */
-
- /*
- * 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) (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 */
-
- /*
- * Kinds of processor
- */
-
- #define CPU_386SX 0
- #define CPU_386 1
- #define CPU_486SX 2
- #define CPU_486 3
- #define CPU_586 4
-