2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
40 * Intel 386 process control block
43 #include <machine/segments.h>
45 #include <machine/npx.h>
66 union savefpu pcb_user_save;
67 uint16_t pcb_initial_npxcw;
69 #define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
70 #define PCB_DBREGS 0x02 /* process using debug registers */
71 #define PCB_NPXINITDONE 0x08 /* fpu state is initialized */
72 #define PCB_VM86CALL 0x10 /* in vm86 call */
73 #define PCB_NPXUSERINITDONE 0x20 /* user fpu state is initialized */
74 #define PCB_KERNNPX 0x40 /* kernel uses npx */
76 caddr_t pcb_onfault; /* copyin/out fault recovery */
82 struct segment_descriptor pcb_fsd;
83 struct segment_descriptor pcb_gsd;
84 struct pcb_ext *pcb_ext; /* optional pcb extension */
85 int pcb_psl; /* process status long */
86 u_long pcb_vm86[2]; /* vm86bios scratch space */
87 union savefpu *pcb_save;
89 struct region_descriptor pcb_gdt;
90 struct region_descriptor pcb_idt;
98 void makectx(struct trapframe *, struct pcb *);
99 int savectx(struct pcb *) __returns_twice;
100 void resumectx(struct pcb *) __fastcall;
103 #endif /* _I386_PCB_H_ */