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      1 /*	$NetBSD: pcb.h,v 1.23 2021/10/27 18:20:23 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      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  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 #ifndef	_POWERPC_PCB_H_
     34 #define	_POWERPC_PCB_H_
     35 
     36 #include <powerpc/reg.h>
     37 #include <powerpc/frame.h>
     38 
     39 struct faultbuf {
     40 	register_t fb_sp;		/* R1 */
     41 	register_t fb_r2;		/* R2 (why?) */
     42 	/*
     43 	 * These are ordered so that one could use a stmw to save them.
     44 	 */
     45 	register_t fb_msr;		/* MSR */
     46 	register_t fb_pc;		/* PC */
     47 	register_t fb_cr;		/* CR */
     48 	register_t fb_fixreg[19];	/* R13-R31 */
     49 };
     50 
     51 struct pcb {
     52 	struct pmap *pcb_pm;	/* pmap of our vmspace */
     53 	register_t pcb_sp;	/* saved SP */
     54 	int pcb_flags;
     55 #define	PCB_FE1		PSL_FE1	/* 0x100 */
     56 #define	PCB_FE0		PSL_FE0	/* 0x800 */
     57 	struct faultbuf *pcb_onfault;	/* For use during copyin/copyout */
     58 	vaddr_t pcb_kmapsr;	/* where to map user segment in kernel */
     59 	vaddr_t pcb_umapsr;	/* the user segment mapped in kernel */
     60 	struct fpreg pcb_fpu;	/* Floating point processor */
     61 	struct vreg pcb_vr __attribute__((aligned(16)));
     62 	register_t pcb_usprg0;	/* User Special-Purpose Register General 0 */
     63 };
     64 
     65 struct md_coredump {
     66 	struct trapframe frame;
     67 	struct fpreg fpstate;
     68 	struct vreg vstate;
     69 };
     70 
     71 #ifdef _KERNEL
     72 int setfault(struct faultbuf *);
     73 #endif
     74 
     75 #endif	/* _POWERPC_PCB_H_ */
     76