Home | History | Annotate | Line # | Download | only in include
cpu.h revision 1.10 
      1 /* $NetBSD: cpu.h,v 1.10 2012/02/08 17:55:21 reinoud Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2007 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _ARCH_USERMODE_INCLUDE_CPU_H
     30 #define _ARCH_USERMODE_INCLUDE_CPU_H
     31 
     32 #include <sys/device.h>
     33 #include <sys/cpu_data.h>
     34 
     35 #include <machine/intrdefs.h>
     36 
     37 extern void	cpu_signotify(struct lwp *);
     38 extern void	cpu_need_proftick(struct lwp *);
     39 extern void	userret(struct lwp *);
     40 
     41 #define	curcpu()	usermode_curcpu()
     42 #define cpu_number()	0
     43 
     44 #define cpu_proc_fork(p1, p2)
     45 
     46 struct cpu_info;
     47 extern int	astpending;
     48 #define aston(ci) (astpending++)
     49 extern void cpu_need_resched(struct cpu_info *ci, int flags);
     50 
     51 
     52 struct cpu_info {
     53 	struct cpu_data	ci_data;		/* MI per-cpu data */
     54 	device_t	ci_dev;			/* pointer to our device */
     55 	struct cpu_info	*ci_self;
     56 	struct cpu_info	*ci_next;
     57 	u_int		ci_cpuid;
     58 	int		ci_want_resched;
     59 	int		ci_idepth;
     60 	volatile int	ci_mtx_count;
     61 	volatile int	ci_mtx_oldspl;
     62 	lwp_t		*ci_curlwp;
     63 	lwp_t		*ci_stash;
     64 };
     65 
     66 __inline static struct cpu_info * __attribute__((__unused__))
     67 usermode_curcpu(void)
     68 {
     69 	extern struct cpu_info cpu_info_primary;
     70 
     71 	return &cpu_info_primary;
     72 }
     73 
     74 __inline static void
     75 usermode_delay(unsigned int ms)
     76 {
     77 	extern int thunk_usleep(unsigned int);
     78 	thunk_usleep(ms);
     79 }
     80 
     81 #define delay(ms)	usermode_delay(ms)
     82 #define DELAY(ms)	usermode_delay(ms)
     83 
     84 /* XXXJDM */
     85 struct clockframe {
     86 	uint8_t cf_dummy;
     87 };
     88 
     89 #define CLKF_USERMODE(frame)	0
     90 #define CLKF_PC(frame)		0
     91 #define CLKF_INTR(frame)	0
     92 
     93 #endif /* !_ARCH_USERMODE_INCLUDE_CPU_H */
     94