ed0c248040
profiling, and various protection checks that cause security holes and system crashes. * Changed min/max/bcmp/ffs/strlen to be static inline functions - included from cpufunc.h in via systm.h. This change improves performance in many parts of the kernel - up to 5% in the networking layer alone. Note that this requires systm.h to be included in any file that uses these functions otherwise it won't be able to find them during the load. * Fixed incorrect call to splx() in if_is.c * Fixed bogus variable assignment to splx() in if_ed.c
111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* 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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* William Jolitz.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)cpu.h 5.4 (Berkeley) 5/9/91
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*/
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/*
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* Definitions unique to i386 cpu support.
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*/
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#include "machine/frame.h"
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#include "machine/segments.h"
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/*
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* definitions of cpu-dependent requirements
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* referenced in generic code
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*/
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#undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */
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/*
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* function vs. inline configuration;
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* these are defined to get generic functions
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* rather than inline or machine-dependent implementations
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*/
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#if 0
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#define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */
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#define NEED_FFS /* need ffs function */
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#define NEED_BCMP /* need bcmp function */
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#define NEED_STRLEN /* need strlen function */
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#endif
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#define cpu_exec(p) /* nothing */
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/*
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* Arguments to hardclock, softclock and gatherstats
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* encapsulate the previous machine state in an opaque
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* clockframe; for now, use generic intrframe.
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*/
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typedef struct intrframe clockframe;
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#define CLKF_USERMODE(framep) (ISPL((framep)->if_cs) == SEL_UPL)
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#define CLKF_BASEPRI(framep) ((framep)->if_ppl == 0)
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#define CLKF_PC(framep) ((framep)->if_eip)
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#define resettodr() /* no todr to set */
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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 need_resched() { want_resched++; aston(); }
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/*
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* Give a profiling tick to the current process from the softclock
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* interrupt. On tahoe, request an ast to send us through trap(),
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* marking the proc as needing a profiling tick.
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*/
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#define profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; aston(); }
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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 signotify(p) aston()
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#define aston() (astpending++)
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int astpending; /* need to trap before returning to user mode */
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int want_resched; /* resched() was called */
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/*
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* Kinds of processor
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*/
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#define CPU_386SX 0
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#define CPU_386 1
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#define CPU_486SX 2
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#define CPU_486 3
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#define CPU_586 4
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