1 /* $OpenBSD: pcb.h,v 1.3 1998/09/15 10:50:12 pefo 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 * 4. 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 * from: @(#)pcb.h 8.1 (Berkeley) 6/10/93 38 * JNPR: pcb.h,v 1.2 2006/08/07 11:51:17 katta 39 * $FreeBSD$ 40 */ 41 42 #ifndef _MACHINE_PCB_H_ 43 #define _MACHINE_PCB_H_ 44 45 /* 46 * used by switch.S 47 */ 48 #define PCB_REG_S0 0 49 #define PCB_REG_S1 1 50 #define PCB_REG_S2 2 51 #define PCB_REG_S3 3 52 #define PCB_REG_S4 4 53 #define PCB_REG_S5 5 54 #define PCB_REG_S6 6 55 #define PCB_REG_S7 7 56 #define PCB_REG_SP 8 57 #define PCB_REG_S8 9 58 #define PCB_REG_RA 10 59 #define PCB_REG_SR 11 60 #define PCB_REG_GP 12 61 #define PCB_REG_PC 13 62 63 #ifndef LOCORE 64 #include <machine/frame.h> 65 66 /* 67 * MIPS process control block 68 */ 69 struct pcb 70 { 71 struct trapframe pcb_regs; /* saved CPU and registers */ 72 __register_t pcb_context[14]; /* kernel context for resume */ 73 void *pcb_onfault; /* for copyin/copyout faults */ 74 register_t pcb_tpc; 75 }; 76 77 #ifdef _KERNEL 78 extern struct pcb *curpcb; /* the current running pcb */ 79 80 void makectx(struct trapframe *, struct pcb *); 81 int savectx(struct pcb *) __returns_twice; 82 #endif 83 #endif 84 85 #endif /* !_MACHINE_PCB_H_ */ 86