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      1 /*	$NetBSD: pcb.h,v 1.28 2021/03/13 17:14:11 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1992, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department and Ralph Campbell.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  * from: Utah Hdr: pcb.h 1.13 89/04/23
     37  *
     38  *	@(#)pcb.h	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 #ifndef _MIPS_PCB_H_
     42 #define	_MIPS_PCB_H_
     43 
     44 #include <mips/types.h>
     45 #include <mips/reg.h>
     46 
     47 struct pcb_faultinfo {
     48 	void *pfi_faultptep;
     49 	vaddr_t pfi_faultaddr;
     50 	u_int pfi_repeats;
     51 	pid_t pfi_lastpid;
     52 	uint8_t pfi_faulttype;
     53 };
     54 
     55 /*
     56  * MIPS process control block
     57  */
     58 struct pcb {
     59 	mips_label_t pcb_context;	/* kernel context for resume */
     60 	void *pcb_onfault;		/* for copyin/copyout faults */
     61 	uint32_t pcb_ppl;		/* previous priority level */
     62 	struct fpreg pcb_fpregs;	/* saved floating point registers */
     63 	struct dspreg pcb_dspregs;	/* saved DSP registers */
     64 	struct pcb_faultinfo pcb_faultinfo;
     65 };
     66 
     67 /*
     68  * The pcb is augmented with machine-dependent additional data for
     69  * core dumps.
     70  */
     71 struct md_coredump {
     72 	mips_reg_t md_regs[38];
     73 	struct fpreg md_fpregs;
     74 };
     75 
     76 #ifdef _KERNEL
     77 #define	PCB_FSR(pcb)	((pcb)->pcb_fpregs.r_regs[_R_FSR - _FPBASE])
     78 #endif
     79 
     80 #ifndef _KERNEL
     81 /* Connect the dots for crash(8). */
     82 vaddr_t db_mach_addr_cpuswitch(void);
     83 #endif
     84 
     85 #endif /*_MIPS_PCB_H_*/
     86