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7f3c30c6 WJ |
1 | /*- |
2 | * Copyright (c) 1990 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * William Jolitz. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
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 | * @(#)pcb.h 5.10 (Berkeley) 5/12/91 | |
37 | */ | |
38 | ||
39 | /* | |
40 | * Intel 386 process control block | |
41 | */ | |
42 | #include "machine/tss.h" | |
43 | #include "machine/npx.h" | |
44 | ||
45 | struct pcb { | |
46 | struct i386tss pcb_tss; | |
47 | #define pcb_ksp pcb_tss.tss_esp0 | |
48 | #define pcb_ptd pcb_tss.tss_cr3 | |
49 | #define pcb_cr3 pcb_ptd | |
50 | #define pcb_pc pcb_tss.tss_eip | |
51 | #define pcb_psl pcb_tss.tss_eflags | |
52 | #define pcb_usp pcb_tss.tss_esp | |
53 | #define pcb_fp pcb_tss.tss_ebp | |
54 | #ifdef notyet | |
55 | u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */ | |
56 | #endif | |
57 | struct save87 pcb_savefpu; /* floating point state for 287/387 */ | |
58 | struct emcsts pcb_saveemc; /* Cyrix EMC state */ | |
59 | /* | |
60 | * Software pcb (extension) | |
61 | */ | |
62 | int pcb_flags; | |
63 | #define FP_WASUSED 0x01 /* floating point has been used in this proc */ | |
64 | #define FP_NEEDSSAVE 0x02 /* needs save on next context switch */ | |
65 | #define FP_NEEDSRESTORE 0x04 /* need restore on next DNA fault */ | |
66 | #define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */ | |
67 | #define FM_TRAP 0x10 /* process entered kernel on a trap frame */ | |
68 | short pcb_iml; /* interrupt mask level */ | |
69 | caddr_t pcb_onfault; /* copyin/out fault recovery */ | |
70 | long pcb_sigc[8]; /* XXX signal code trampoline */ | |
71 | int pcb_cmap2; /* XXX temporary PTE - will prefault instead */ | |
72 | }; | |
73 | ||
74 | #ifdef KERNEL | |
75 | struct pcb *curpcb; /* our current running pcb */ | |
76 | #endif |