95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/* $NetBSD: cpu.h,v 1.178 2011/12/30 17:57:49 cherry Exp $ */
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/*-
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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. 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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#ifndef _I386_CPU_H_
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#define _I386_CPU_H_
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#include <x86/cpu.h>
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#ifdef _KERNEL
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#if defined(__GNUC__) && !defined(_MODULE)
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static struct cpu_info *x86_curcpu(void);
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static lwp_t *x86_curlwp(void);
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__inline static struct cpu_info * __unused
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x86_curcpu(void)
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{
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struct cpu_info *ci;
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__asm volatile("movl %%fs:%1, %0" :
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"=r" (ci) :
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"m"
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(*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self)));
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return ci;
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}
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__inline static lwp_t * __attribute__ ((const))
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x86_curlwp(void)
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{
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lwp_t *l;
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__asm volatile("movl %%fs:%1, %0" :
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"=r" (l) :
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"m"
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(*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp)));
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return l;
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}
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__inline static void __unused
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cpu_set_curpri(int pri)
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{
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__asm volatile(
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"movl %1, %%fs:%0" :
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"=m" (*(struct cpu_info *)offsetof(struct cpu_info, ci_schedstate.spc_curpriority)) :
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"r" (pri)
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);
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}
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#endif
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#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_eflags)
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#define CLKF_PC(frame) ((frame)->cf_if.if_eip)
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#define CLKF_INTR(frame) (curcpu()->ci_idepth > 0)
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#define LWP_PC(l) ((l)->l_md.md_regs->tf_eip)
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#ifdef PAE
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void cpu_alloc_l3_page(struct cpu_info *);
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#endif /* PAE */
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#endif /* _KERNEL */
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#endif /* !_I386_CPU_H_ */
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