e727405d75
more than three temporary register in several places CATR() is used so this code trades instructions in for registers. Actually, this still isn't sufficient and CATR() has the side-effect of clobbering %y. Luckily, with the current uses of CATR() this either doesn't matter or we are able to (save and) restore it. Now that there's only one use of AND() and TEST() left inline these.
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*-
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* Copyright (c) 1996 Berkeley Software Design, Inc. All rights reserved.
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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. Berkeley Software Design Inc's name may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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 BSDI $Id: ktr.h,v 1.10.2.7 2000/03/16 21:44:42 cp Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_KTR_H_
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#define _MACHINE_KTR_H_
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#include <sys/ktr.h>
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#ifndef LOCORE
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#define KTR_CPU PCPU_GET(mid)
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#else
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/*
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* XXX could really use another register...
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*/
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#define ATR(desc, r1, r2, r3, l1, l2) \
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.sect .rodata ; \
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l1: .asciz desc ; \
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.previous ; \
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SET(ktr_idx, r2, r1) ; \
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lduw [r1], r2 ; \
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l2: add r2, 1, r3 ; \
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set KTR_ENTRIES - 1, r1 ; \
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and r3, r1, r3 ; \
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set ktr_idx, r1 ; \
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casa [r1] ASI_N, r2, r3 ; \
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cmp r2, r3 ; \
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bne %icc, l2 ## b ; \
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mov r3, r2 ; \
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SET(ktr_buf, r3, r1) ; \
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mulx r2, KTR_SIZEOF, r2 ; \
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add r1, r2, r1 ; \
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rd %tick, r2 ; \
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stx r2, [r1 + KTR_TIMESTAMP] ; \
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lduw [PCPU(MID)], r2 ; \
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stw r2, [r1 + KTR_CPU] ; \
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stw %g0, [r1 + KTR_LINE] ; \
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stx %g0, [r1 + KTR_FILE] ; \
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SET(l1 ## b, r3, r2) ; \
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stx r2, [r1 + KTR_DESC]
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/*
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* NB: this clobbers %y.
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*/
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#define CATR(mask, desc, r1, r2, r3, l1, l2, l3) \
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set mask, r1 ; \
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SET(ktr_mask, r3, r2) ; \
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lduw [r2], r2 ; \
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and r2, r1, r1 ; \
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brz r1, l3 ## f ; \
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nop ; \
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lduw [PCPU(CPUID)], r2 ; \
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mov _NCPUBITS, r3 ; \
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mov %g0, %y ; \
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udiv r2, r3, r2 ; \
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srl r2, 0, r2 ; \
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sllx r2, PTR_SHIFT, r2 ; \
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SET(ktr_cpumask, r3, r1) ; \
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ldx [r1 + r2], r1 ; \
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lduw [PCPU(CPUID)], r2 ; \
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mov _NCPUBITS, r3 ; \
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mov %g0, %y ; \
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udiv r2, r3, r2 ; \
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srl r2, 0, r2 ; \
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smul r2, r3, r3 ; \
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lduw [PCPU(CPUID)], r2 ; \
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sub r2, r3, r3 ; \
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mov 1, r2 ; \
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sllx r2, r3, r2 ; \
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andn r1, r2, r1 ; \
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brz r1, l3 ## f ; \
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nop ; \
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ATR(desc, r1, r2, r3, l1, l2)
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#endif /* LOCORE */
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#endif /* !_MACHINE_KTR_H_ */
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