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Diffstat (limited to 'sys/i386/include/smpasm.h')
| -rw-r--r-- | sys/i386/include/smpasm.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sys/i386/include/smpasm.h b/sys/i386/include/smpasm.h new file mode 100644 index 0000000..6f15307 --- /dev/null +++ b/sys/i386/include/smpasm.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 1996, by Peter Wemm + * All rights reserved. + * + * 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. The name of the developer may NOT be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + * + * $Id: smpasm.h,v 1.8 1997/04/25 03:11:40 fsmp Exp $ + */ +#ifndef __MACHINE_SMPASM_H__ +#define __MACHINE_SMPASM_H__ 1 + + +#if defined(SMP) || defined(APIC_IO) + +#include <machine/apic.h> + +/* Macro to retrieve the current CPU id from hardware */ +#define GETCPUID(reg) \ + movl _apic_base, reg; \ + movl APIC_ID(reg), reg; \ + andl $APIC_ID_MASK, reg; \ + shrl $24, reg; \ + movl _apic_id_to_logical(,reg,4), reg + +#define SETCURPROC(val, reg) GETCPUID(reg); movl val, _SMPcurproc(,reg,4) +#define GETCURPROC(reg) GETCPUID(reg); movl _SMPcurproc(,reg,4), reg +#define SETCURPCB(val, reg) GETCPUID(reg); movl val, _SMPcurpcb(,reg,4) +#define GETCURPCB(reg) GETCPUID(reg); movl _SMPcurpcb(,reg,4), reg +#define SETNPXPROC(val, reg) GETCPUID(reg); movl val, _SMPnpxproc(,reg,4) +#define GETNPXPROC(reg) GETCPUID(reg); movl _SMPnpxproc(,reg,4), reg + +#else /* !SMP && !APIC_IO */ + +#define SETCURPROC(val, reg) movl val, _curproc +#define GETCURPROC(reg) movl _curproc, reg +#define SETCURPCB(val, reg) movl val, _curpcb +#define GETCURPCB(reg) movl _curpcb, reg +#define SETNPXPROC(val, reg) movl val, _npxproc +#define GETNPXPROC(reg) movl _npxproc, reg + +#endif /* SMP || APIC_IO */ + +#endif /* __MACHINE_SMPASM_H__ */ |
