141058Swilliam /*- 241058Swilliam * Copyright (c) 1990 The Regents of the University of California. 341058Swilliam * All rights reserved. 441058Swilliam * 541058Swilliam * This code is derived from software contributed to Berkeley by 641058Swilliam * William Jolitz. 741058Swilliam * 846006Swilliam * %sccs.include.redist.c% 941058Swilliam * 10*49520Swilliam * @(#)pcb.h 5.8 (Berkeley) 05/09/91 1141058Swilliam */ 1241058Swilliam 13*49520Swilliam 1440463Sbill /* 1540463Sbill * Intel 386 process control block 1640463Sbill */ 17*49520Swilliam #include "machine/tss.h" 18*49520Swilliam #include "machine/npx.h" 1940463Sbill 2040463Sbill struct pcb { 2140463Sbill struct i386tss pcbtss; 2240463Sbill #define pcb_ksp pcbtss.tss_esp0 2340463Sbill #define pcb_ptd pcbtss.tss_cr3 2445964Swilliam #define pcb_cr3 pcb_ptd 2540463Sbill #define pcb_pc pcbtss.tss_eip 2640463Sbill #define pcb_psl pcbtss.tss_eflags 2740463Sbill #define pcb_usp pcbtss.tss_esp 2840463Sbill #define pcb_fp pcbtss.tss_ebp 2940463Sbill /* 3040463Sbill * Software pcb (extension) 3140463Sbill */ 3245964Swilliam int pcb_flags; 3345964Swilliam #define FP_WASUSED 0x1 /* floating point has been used in this proc */ 3445964Swilliam #define FP_NEEDSSAVE 0x2 /* needs save on next context switch */ 3545964Swilliam #define FP_NEEDSRESTORE 0x4 /* need restore on next DNA fault */ 3645964Swilliam #define FP_USESEMC 0x8 /* process uses EMC memory-mapped mode */ 3740463Sbill struct save87 pcb_savefpu; 3845588Sbill struct emcsts pcb_saveemc; 3940463Sbill struct pte *pcb_p0br; 4040463Sbill struct pte *pcb_p1br; 4140463Sbill int pcb_p0lr; 4240463Sbill int pcb_p1lr; 4340463Sbill int pcb_szpt; /* number of pages of user page table */ 4440463Sbill int pcb_cmap2; 4540463Sbill int *pcb_sswap; 4645964Swilliam long pcb_sigc[8]; 4745588Sbill int pcb_iml; /* interrupt mask level */ 4840463Sbill }; 49