LCOM1920-T02G10

/*        $NetBSD: cpu.h,v 1.178 2011/12/30 17:57:49 cherry Exp $        */

/*-

 * 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. 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

 */

#ifndef _I386_CPU_H_

#define _I386_CPU_H_

#include <x86/cpu.h>

#ifdef _KERNEL

#if defined(__GNUC__) && !defined(_MODULE)

static struct cpu_info *x86_curcpu(void);

static lwp_t *x86_curlwp(void);

__inline static struct cpu_info * __unused

x86_curcpu(void)

{

        struct cpu_info *ci;

        __asm volatile("movl %%fs:%1, %0" :

            "=r" (ci) :

            "m"

            (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_self)));

        return ci;

}

__inline static lwp_t * __attribute__ ((const))

x86_curlwp(void)

{

        lwp_t *l;

        __asm volatile("movl %%fs:%1, %0" :

            "=r" (l) :

            "m"

            (*(struct cpu_info * const *)offsetof(struct cpu_info, ci_curlwp)));

        return l;

}

__inline static void __unused

cpu_set_curpri(int pri)

{

        __asm volatile(

            "movl %1, %%fs:%0" :

            "=m" (*(struct cpu_info *)offsetof(struct cpu_info, ci_schedstate.spc_curpriority)) :

            "r" (pri)

        );

}

#endif

#define        CLKF_USERMODE(frame)        USERMODE((frame)->cf_if.if_cs, (frame)->cf_if.if_eflags)

#define        CLKF_PC(frame)                ((frame)->cf_if.if_eip)

#define        CLKF_INTR(frame)        (curcpu()->ci_idepth > 0)

#define        LWP_PC(l)                ((l)->l_md.md_regs->tf_eip)

#ifdef PAE

void cpu_alloc_l3_page(struct cpu_info *);

#endif /* PAE */

#endif        /* _KERNEL */

#if defined(__minix)

#include <x86/psl.h>

/* User flags are S (Status) and C (Control) flags. */

#define X86_FLAGS_USER (PSL_C | PSL_PF | PSL_AF | PSL_Z | \

        PSL_N | PSL_D | PSL_V)

#endif /* defined(__minix) */

#endif /* !_I386_CPU_H_ */