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cpu.h revision 1.6 
      1 /* $NetBSD: cpu.h,v 1.6 2011/08/13 10:31:24 jmcneill 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 
     40 struct cpu_info {
     41 	device_t	ci_dev;
     42 	struct cpu_info	*ci_self;
     43 	struct cpu_info	*ci_next;
     44 	struct cpu_data	ci_data;
     45 	u_int		ci_cpuid;
     46 	int		ci_want_resched;
     47 	int		ci_idepth;
     48 	volatile int	ci_mtx_count;
     49 	volatile int	ci_mtx_oldspl;
     50 	lwp_t		*ci_curlwp;
     51 	lwp_t		*ci_stash;
     52 };
     53 
     54 __inline static struct cpu_info * __attribute__((__unused__))
     55 usermode_curcpu(void)
     56 {
     57 	extern struct cpu_info cpu_info_primary;
     58 
     59 	return &cpu_info_primary;
     60 }
     61 
     62 __inline static void
     63 usermode_delay(unsigned int ms)
     64 {
     65 	extern int thunk_usleep(unsigned int);
     66 	thunk_usleep(ms);
     67 }
     68 
     69 #define	curcpu()	usermode_curcpu()
     70 #define cpu_number()	0
     71 
     72 #define cpu_proc_fork(p1, p2)
     73 
     74 #define delay(ms)	usermode_delay(ms)
     75 #define DELAY(ms)	usermode_delay(ms)
     76 
     77 /* XXXJDM */
     78 struct clockframe {
     79 	uint8_t cf_dummy;
     80 };
     81 
     82 #define CLKF_USERMODE(frame)	0
     83 #define CLKF_PC(frame)		0
     84 #define CLKF_INTR(frame)	0
     85 
     86 #endif /* !_ARCH_USERMODE_INCLUDE_CPU_H */
     87