1178172Simp/* $OpenBSD: pcb.h,v 1.3 1998/09/15 10:50:12 pefo Exp $ */ 2178172Simp 3178172Simp/*- 4178172Simp * Copyright (c) 1988 University of Utah. 5178172Simp * Copyright (c) 1992, 1993 6178172Simp * The Regents of the University of California. All rights reserved. 7178172Simp * 8178172Simp * This code is derived from software contributed to Berkeley by 9178172Simp * the Systems Programming Group of the University of Utah Computer 10178172Simp * Science Department and Ralph Campbell. 11178172Simp * 12178172Simp * Redistribution and use in source and binary forms, with or without 13178172Simp * modification, are permitted provided that the following conditions 14178172Simp * are met: 15178172Simp * 1. Redistributions of source code must retain the above copyright 16178172Simp * notice, this list of conditions and the following disclaimer. 17178172Simp * 2. Redistributions in binary form must reproduce the above copyright 18178172Simp * notice, this list of conditions and the following disclaimer in the 19178172Simp * documentation and/or other materials provided with the distribution. 20178172Simp * 4. Neither the name of the University nor the names of its contributors 21178172Simp * may be used to endorse or promote products derived from this software 22178172Simp * without specific prior written permission. 23178172Simp * 24178172Simp * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25178172Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26178172Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27178172Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28178172Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29178172Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30178172Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31178172Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32178172Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33178172Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34178172Simp * SUCH DAMAGE. 35178172Simp * 36178172Simp * from: Utah Hdr: pcb.h 1.13 89/04/23 37178172Simp * from: @(#)pcb.h 8.1 (Berkeley) 6/10/93 38178172Simp * JNPR: pcb.h,v 1.2 2006/08/07 11:51:17 katta 39178172Simp * $FreeBSD$ 40178172Simp */ 41178172Simp 42178172Simp#ifndef _MACHINE_PCB_H_ 43178172Simp#define _MACHINE_PCB_H_ 44178172Simp 45178172Simp/* 46178172Simp * used by switch.S 47178172Simp */ 48211862Sjchandra#define PCB_REG_S0 0 49211862Sjchandra#define PCB_REG_S1 1 50211862Sjchandra#define PCB_REG_S2 2 51211862Sjchandra#define PCB_REG_S3 3 52211862Sjchandra#define PCB_REG_S4 4 53211862Sjchandra#define PCB_REG_S5 5 54211862Sjchandra#define PCB_REG_S6 6 55211862Sjchandra#define PCB_REG_S7 7 56211862Sjchandra#define PCB_REG_SP 8 57211862Sjchandra#define PCB_REG_S8 9 58211862Sjchandra#define PCB_REG_RA 10 59211862Sjchandra#define PCB_REG_SR 11 60211862Sjchandra#define PCB_REG_GP 12 61211862Sjchandra#define PCB_REG_PC 13 62178172Simp 63256494Simp/* 64256494Simp * Call ast if required 65256494Simp * 66256494Simp * XXX Do we really need to disable interrupts? 67256494Simp */ 68256494Simp#define DO_AST \ 69256494Simp44: \ 70256494Simp mfc0 t0, MIPS_COP_0_STATUS ;\ 71256494Simp and a0, t0, MIPS_SR_INT_IE ;\ 72256494Simp xor t0, a0, t0 ;\ 73256494Simp mtc0 t0, MIPS_COP_0_STATUS ;\ 74256494Simp COP0_SYNC ;\ 75256494Simp GET_CPU_PCPU(s1) ;\ 76256494Simp PTR_L s3, PC_CURPCB(s1) ;\ 77256494Simp PTR_L s1, PC_CURTHREAD(s1) ;\ 78256494Simp lw s2, TD_FLAGS(s1) ;\ 79256494Simp li s0, TDF_ASTPENDING | TDF_NEEDRESCHED;\ 80256494Simp and s2, s0 ;\ 81256494Simp mfc0 t0, MIPS_COP_0_STATUS ;\ 82256494Simp or t0, a0, t0 ;\ 83256494Simp mtc0 t0, MIPS_COP_0_STATUS ;\ 84256494Simp COP0_SYNC ;\ 85256494Simp beq s2, zero, 4f ;\ 86256494Simp nop ;\ 87256494Simp PTR_LA s0, _C_LABEL(ast) ;\ 88256494Simp jalr s0 ;\ 89256494Simp PTR_ADDU a0, s3, U_PCB_REGS ;\ 90256494Simp j 44b ;\ 91256494Simp nop ;\ 92256494Simp4: 93256494Simp 94256494Simp#define SAVE_U_PCB_REG(reg, offs, base) \ 95256494Simp REG_S reg, U_PCB_REGS + (SZREG * offs) (base) 96256494Simp 97256494Simp#define RESTORE_U_PCB_REG(reg, offs, base) \ 98256494Simp REG_L reg, U_PCB_REGS + (SZREG * offs) (base) 99256494Simp 100256494Simp#define SAVE_U_PCB_FPREG(reg, offs, base) \ 101256494Simp FP_S reg, U_PCB_FPREGS + (SZFPREG * offs) (base) 102256494Simp 103256494Simp#define RESTORE_U_PCB_FPREG(reg, offs, base) \ 104256494Simp FP_L reg, U_PCB_FPREGS + (SZFPREG * offs) (base) 105256494Simp 106256494Simp#define SAVE_U_PCB_FPSR(reg, offs, base) \ 107256494Simp REG_S reg, U_PCB_FPREGS + (SZFPREG * offs) (base) 108256494Simp 109256494Simp#define RESTORE_U_PCB_FPSR(reg, offs, base) \ 110256494Simp REG_L reg, U_PCB_FPREGS + (SZFPREG * offs) (base) 111256494Simp 112256494Simp#define SAVE_U_PCB_CONTEXT(reg, offs, base) \ 113256494Simp REG_S reg, U_PCB_CONTEXT + (SZREG * offs) (base) 114256494Simp 115256494Simp#define RESTORE_U_PCB_CONTEXT(reg, offs, base) \ 116256494Simp REG_L reg, U_PCB_CONTEXT + (SZREG * offs) (base) 117256494Simp 118249882Simp#ifndef LOCORE 119249882Simp#include <machine/frame.h> 120178172Simp 121249882Simp/* 122249882Simp * MIPS process control block 123249882Simp */ 124249882Simpstruct pcb 125249882Simp{ 126249882Simp struct trapframe pcb_regs; /* saved CPU and registers */ 127249882Simp __register_t pcb_context[14]; /* kernel context for resume */ 128249882Simp void *pcb_onfault; /* for copyin/copyout faults */ 129249882Simp register_t pcb_tpc; 130249882Simp}; 131249882Simp 132178172Simp#ifdef _KERNEL 133178172Simpextern struct pcb *curpcb; /* the current running pcb */ 134178172Simp 135178172Simpvoid makectx(struct trapframe *, struct pcb *); 136234785Sdimint savectx(struct pcb *) __returns_twice; 137256494Simp 138178172Simp#endif 139249882Simp#endif 140178172Simp 141178172Simp#endif /* !_MACHINE_PCB_H_ */ 142