blob: 96628d11b3420c0f595faeff0f8cfda24f236f5e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* Mach Operating System
* Copyright (c) 1993-1992 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON AND OMRON ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON AND OMRON DISCLAIM ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Motorola 88100 pcb definitions
*
*/
/*
*/
#ifndef _PCB_H_
#define _PCB_H_
/*
* Our PCB is the regular PCB+Save area for kernel frame.
* Upon entering kernel mode from user land, save the user context
* in the saved_state area - this is passed as the exception frame.
* On a context switch, only registers that need to be saved by the
* C calling convention and few other regs (pc, psr etc) are saved
* in the kernel_state part of the PCB.
*/
/* This must always be an even number of words long */
struct m88100_pcb {
unsigned pcb_pc; /* address to return */
unsigned pcb_r14;
unsigned pcb_r15;
unsigned pcb_r16;
unsigned pcb_r17;
unsigned pcb_r18;
unsigned pcb_r19;
unsigned pcb_r20;
unsigned pcb_r21;
unsigned pcb_r22;
unsigned pcb_r23;
unsigned pcb_r24;
unsigned pcb_r25;
unsigned pcb_r26;
unsigned pcb_r27;
unsigned pcb_r28;
unsigned pcb_r29;
unsigned pcb_r30;
unsigned pcb_sp; /* kernel stack pointer */
unsigned pcb_mask;
};
/*
* m88100_saved_state this structure corresponds to the state
* of the user registers as saved on the
* stack upon kernel entry. This structure
* is used internally only. Since this
* structure may change from version to
* version, it is hidden from the user.
*/
/* This must always be an even number of words long */
struct m88100_saved_state {
unsigned r[32];
unsigned fpsr;
unsigned fpcr;
unsigned epsr;
unsigned sxip;
unsigned snip;
unsigned sfip;
unsigned ssbr;
unsigned dmt0;
unsigned dmd0;
unsigned dma0;
unsigned dmt1;
unsigned dmd1;
unsigned dma1;
unsigned dmt2;
unsigned dmd2;
unsigned dma2;
unsigned fpecr;
unsigned fphs1;
unsigned fpls1;
unsigned fphs2;
unsigned fpls2;
unsigned fppt;
unsigned fprh;
unsigned fprl;
unsigned fpit;
unsigned vector; /* exception vector number */
unsigned mask; /* interrupt mask level */
unsigned mode; /* interrupt mode */
unsigned scratch1; /* used by locore trap handling code */
unsigned pad; /* to make an even length */
} ;
#define trapframe m88100_saved_state
struct pcb
{
struct m88100_saved_state user_state;
struct m88100_pcb kernel_state;
int pcb_onfault; /* for copyin/copyout faults */
};
typedef struct pcb *pcb_t; /* exported */
/*
* Location of saved user registers for the proc.
*/
#define USER_REGS(p) \
(((struct m88100_saved_state *) (&((p)->p_addr->u_pcb.user_state))))
/*
* The pcb is augmented with machine-dependent additional data for
* core dumps. Note that the trapframe here is a copy of the one
* from the top of the kernel stack (included here so that the kernel
* stack itself need not be dumped).
*/
struct md_coredump {
struct trapframe md_tf;
};
#endif _PCB_H_
|
