kernel - Make pcb_onfault more robust.
[dragonfly.git] / sys / platform / pc64 / include / pcb.h
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39923942 1/*-
39923942 2 * Copyright (c) 1990 The Regents of the University of California.
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3 * Copyright (c) 2003 Peter Wemm.
4 * Copyright (c) 2008 The DragonFly Project.
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5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
39 * $FreeBSD: src/sys/amd64/include/pcb.h,v 1.57 2004/01/28 23:54:31 peter Exp $
c8fe38ae 40 * $DragonFly: src/sys/platform/pc64/include/pcb.h,v 1.3 2008/08/29 17:07:17 dillon Exp $
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41 */
42
43#ifndef _MACHINE_PCB_H_
44#define _MACHINE_PCB_H_
45
46/*
b2b3ffcd 47 * x86_64 process control block
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48 */
49#include <machine/npx.h>
50
51struct pcb {
52 register_t padxx[8];
53 register_t pcb_cr3;
54 register_t pcb_r15;
55 register_t pcb_r14;
56 register_t pcb_r13;
57 register_t pcb_r12;
58 register_t pcb_rbp;
59 register_t pcb_rsp;
60 register_t pcb_rbx;
61 register_t pcb_rip;
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62 register_t pcb_rsi;
63 register_t pcb_rdi;
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64 register_t pcb_rflags;
65 register_t pcb_fsbase;
66 register_t pcb_gsbase;
c8fe38ae 67 u_long pcb_flags;
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68 u_int32_t pcb_ds;
69 u_int32_t pcb_es;
70 u_int32_t pcb_fs;
71 u_int32_t pcb_gs;
72 u_int64_t pcb_dr0;
73 u_int64_t pcb_dr1;
74 u_int64_t pcb_dr2;
75 u_int64_t pcb_dr3;
76 u_int64_t pcb_dr6;
77 u_int64_t pcb_dr7;
78
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79 struct pcb_ldt *pcb_ldt;
80 union savefpu pcb_save;
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81 caddr_t pcb_onfault; /* copyin/out fault recovery */
82 register_t pcb_onfault_sp; /* validate onfault */
83 register_t pcb_unused[4]; /* kgdb compatibility expansion */
84 struct pcb_ext *pcb_ext; /* optional pcb extension */
85};
86
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87#define PCB_DBREGS 0x02 /* process using debug registers */
88#define PCB_FPUINITDONE 0x08 /* fpu state is initialized */
5b9f6cc4 89#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
d7f50089 90#define FP_VIRTFP 0x04 /* virtual kernel wants exception */
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91
92#ifdef _KERNEL
93void savectx(struct pcb *);
94#endif
95
96#endif /* _MACHINE_PCB_H_ */