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/* $NetBSD: cpu.h,v 1.183 2021/11/02 11:26:04 ryo 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 __always_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;
}
#endif
#ifdef XENPV
#define CLKF_USERMODE(frame) (curcpu()->ci_xen_clockf_usermode)
#define CLKF_PC(frame) (curcpu()->ci_xen_clockf_pc)
#else /* XENPV */
#define CLKF_USERMODE(frame) USERMODE((frame)->cf_if.if_cs)
#define CLKF_PC(frame) ((frame)->cf_if.if_eip)
#endif /* XENPV */
#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 */
#endif /* !_I386_CPU_H_ */
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