1*41058Swilliam /*- 2*41058Swilliam * Copyright (c) 1990 The Regents of the University of California. 3*41058Swilliam * All rights reserved. 4*41058Swilliam * 5*41058Swilliam * This code is derived from software contributed to Berkeley by 6*41058Swilliam * William Jolitz. 7*41058Swilliam * 8*41058Swilliam * %sccs.include.noredist.c% 9*41058Swilliam * 10*41058Swilliam * @(#)pcb.h 5.1 (Berkeley) 04/24/90 11*41058Swilliam */ 12*41058Swilliam 1340463Sbill /* 1440463Sbill * Intel 386 process control block 1540463Sbill */ 1640463Sbill #include "tss.h" 1740463Sbill #include "fpu.h" 1840463Sbill 1940463Sbill struct pcb { 2040463Sbill struct i386tss pcbtss; 2140463Sbill #define pcb_ksp pcbtss.tss_esp0 2240463Sbill #define pcb_ptd pcbtss.tss_cr3 2340463Sbill #define pcb_pc pcbtss.tss_eip 2440463Sbill #define pcb_psl pcbtss.tss_eflags 2540463Sbill #define pcb_usp pcbtss.tss_esp 2640463Sbill #define pcb_fp pcbtss.tss_ebp 2740463Sbill /* 2840463Sbill * Software pcb (extension) 2940463Sbill */ 30*41058Swilliam int pcb_fpsav; 31*41058Swilliam #define FP_NEEDSAVE 0x1 /* need save on next context switch */ 32*41058Swilliam #define FP_NEEDRESTORE 0x2 /* need restore on next DNA fault */ 3340463Sbill struct save87 pcb_savefpu; 3440463Sbill struct pte *pcb_p0br; 3540463Sbill struct pte *pcb_p1br; 3640463Sbill int pcb_p0lr; 3740463Sbill int pcb_p1lr; 3840463Sbill int pcb_szpt; /* number of pages of user page table */ 3940463Sbill int pcb_cmap2; 4040463Sbill int *pcb_sswap; 4140463Sbill long pcb_sigc[5]; /* sigcode actually 19 bytes */ 4240463Sbill }; 43