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pcb.h revision 1.3 
      1 /*	$NetBSD: pcb.h,v 1.3 2017/04/08 18:04:34 scole Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003,2004 Marcel Moolenaar
      5  * Copyright (c) 2000 Doug Rabson
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  *
     29  *	$FreeBSD: src/sys/ia64/include/pcb.h,v 1.16 2004/08/16 19:05:08 marcel Exp $
     30  */
     31 
     32 #ifndef _IA64_PCB_H_
     33 #define _IA64_PCB_H_
     34 
     35 #include <machine/_regset.h>
     36 #include <sys/lock.h>
     37 
     38 /*
     39  * PCB: process control block
     40  */
     41 struct pmap;
     42 struct pcb {
     43 	struct _special		pcb_special;
     44 	struct _callee_saved	pcb_preserved;
     45 	struct _callee_saved_fp	pcb_preserved_fp;
     46 	struct _high_fp		pcb_high_fp;
     47 	struct pcpu		*pcb_fpcpu;
     48 	kmutex_t		pcb_fpcpu_slock;
     49 
     50 
     51 	/* IA32 specific registers. */
     52 	uint64_t		pcb_ia32_cflg;
     53 	uint64_t		pcb_ia32_eflag;
     54 	uint64_t		pcb_ia32_fcr;
     55 	uint64_t		pcb_ia32_fdr;
     56 	uint64_t		pcb_ia32_fir;
     57 	uint64_t		pcb_ia32_fsr;
     58 
     59 	uint64_t		pcb_onfault;	/* for copy faults */
     60   //	struct pmap 		*pcb_current_pmap;
     61 };
     62 
     63 #ifdef _KERNEL
     64 
     65 #define	savectx(p)	swapctx(p, NULL)
     66 
     67 struct trapframe;
     68 
     69 void makectx(struct trapframe *, struct pcb *);
     70 /* XXX not sure about the attributes, for now use equivalent to freebsd */
     71 void restorectx(struct pcb *) __attribute__ ((__noreturn__)); /* same as __dead2? */
     72 int swapctx(struct pcb *old, struct pcb *new) __returns_twice;
     73 
     74 void ia32_restorectx(struct pcb *);
     75 void ia32_savectx(struct pcb *);
     76 
     77 #endif
     78 
     79 #endif /* _IA64_PCB_H_ */
     80