pcb.h revision 1.10.2.2
1 1.10.2.2 mycroft /*- 2 1.10.2.2 mycroft * Copyright (c) 1990 The Regents of the University of California. 3 1.10.2.2 mycroft * All rights reserved. 4 1.10.2.2 mycroft * 5 1.10.2.2 mycroft * This code is derived from software contributed to Berkeley by 6 1.10.2.2 mycroft * William Jolitz. 7 1.10.2.2 mycroft * 8 1.10.2.2 mycroft * Redistribution and use in source and binary forms, with or without 9 1.10.2.2 mycroft * modification, are permitted provided that the following conditions 10 1.10.2.2 mycroft * are met: 11 1.10.2.2 mycroft * 1. Redistributions of source code must retain the above copyright 12 1.10.2.2 mycroft * notice, this list of conditions and the following disclaimer. 13 1.10.2.2 mycroft * 2. Redistributions in binary form must reproduce the above copyright 14 1.10.2.2 mycroft * notice, this list of conditions and the following disclaimer in the 15 1.10.2.2 mycroft * documentation and/or other materials provided with the distribution. 16 1.10.2.2 mycroft * 3. All advertising materials mentioning features or use of this software 17 1.10.2.2 mycroft * must display the following acknowledgement: 18 1.10.2.2 mycroft * This product includes software developed by the University of 19 1.10.2.2 mycroft * California, Berkeley and its contributors. 20 1.10.2.2 mycroft * 4. Neither the name of the University nor the names of its contributors 21 1.10.2.2 mycroft * may be used to endorse or promote products derived from this software 22 1.10.2.2 mycroft * without specific prior written permission. 23 1.10.2.2 mycroft * 24 1.10.2.2 mycroft * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 1.10.2.2 mycroft * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 1.10.2.2 mycroft * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 1.10.2.2 mycroft * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 1.10.2.2 mycroft * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 1.10.2.2 mycroft * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 1.10.2.2 mycroft * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 1.10.2.2 mycroft * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 1.10.2.2 mycroft * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 1.10.2.2 mycroft * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 1.10.2.2 mycroft * SUCH DAMAGE. 35 1.10.2.2 mycroft * 36 1.10.2.2 mycroft * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91 37 1.10.2.2 mycroft * pcb.h,v 1.6 1993/06/27 04:50:12 andrew Exp 38 1.10.2.2 mycroft */ 39 1.10.2.2 mycroft 40 1.10.2.2 mycroft #ifndef _I386_PCB_H_ 41 1.10.2.2 mycroft #define _I386_PCB_H_ 42 1.10.2.2 mycroft 43 1.10.2.2 mycroft /* 44 1.10.2.2 mycroft * Intel 386 process control block 45 1.10.2.2 mycroft */ 46 1.10.2.2 mycroft #include "machine/tss.h" 47 1.10.2.2 mycroft #include "machine/npx.h" 48 1.10.2.2 mycroft 49 1.10.2.2 mycroft struct pcb { 50 1.10.2.2 mycroft struct i386tss pcb_tss; 51 1.10.2.2 mycroft #define pcb_ksp pcb_tss.tss_esp0 52 1.10.2.2 mycroft #define pcb_ptd pcb_tss.tss_cr3 53 1.10.2.2 mycroft #define pcb_cr3 pcb_ptd 54 1.10.2.2 mycroft #define pcb_pc pcb_tss.tss_eip 55 1.10.2.2 mycroft #define pcb_psl pcb_tss.tss_eflags 56 1.10.2.2 mycroft #define pcb_usp pcb_tss.tss_esp 57 1.10.2.2 mycroft #define pcb_fp pcb_tss.tss_ebp 58 1.10.2.2 mycroft #ifdef notyet 59 1.10.2.2 mycroft u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */ 60 1.10.2.2 mycroft #endif 61 1.10.2.2 mycroft caddr_t pcb_ldt; /* per process (user) LDT */ 62 1.10.2.2 mycroft int pcb_ldt_len; /* number of LDT entries */ 63 1.10.2.2 mycroft struct save87 pcb_savefpu; /* floating point state for 287/387 */ 64 1.10.2.2 mycroft struct emcsts pcb_saveemc; /* Cyrix EMC state */ 65 1.10.2.2 mycroft /* 66 1.10.2.2 mycroft * Software pcb (extension) 67 1.10.2.2 mycroft */ 68 1.10.2.2 mycroft int pcb_flags; 69 1.10.2.2 mycroft #ifdef notused 70 1.10.2.2 mycroft #define FP_WASUSED 0x01 /* process has used fltng pnt hardware */ 71 1.10.2.2 mycroft #define FP_NEEDSSAVE 0x02 /* ... that needs save on next context switch */ 72 1.10.2.2 mycroft #define FP_NEEDSRESTORE 0x04 /* ... that needs restore on next DNA fault */ 73 1.10.2.2 mycroft #endif 74 1.10.2.2 mycroft #define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */ 75 1.10.2.2 mycroft #define FP_SOFTFP 0x20 /* process using software fltng pnt emulator */ 76 1.10.2.2 mycroft int pcb_iml; /* interrupt mask level */ 77 1.10.2.2 mycroft caddr_t pcb_onfault; /* copyin/out fault recovery */ 78 1.10.2.2 mycroft }; 79 1.10.2.2 mycroft 80 1.10.2.2 mycroft #ifdef KERNEL 81 1.10.2.2 mycroft struct pcb *curpcb; /* our current running pcb */ 82 1.10.2.2 mycroft #endif 83 1.10.2.2 mycroft 84 1.10.2.2 mycroft #endif /* _I386_PCB_H_ */ 85
Indexes created Sat Oct 25 10:09:55 GMT 2025