xref: /original-bsd/sys/i386/include/frame.h (revision bbb96de4)
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  * %sccs.include.noredist.c%
9  *
10  *	@(#)frame.h	5.1 (Berkeley) 04/24/90
11  */
12 
13 /*
14  * System stack frames.
15  */
16 
17 /*
18  * Exception/Trap Stack Frame
19  */
20 
21 struct trapframe {
22 	int	tf_es;
23 	int	tf_ds;
24 	int	tf_edi;
25 	int	tf_esi;
26 	int	tf_ebp;
27 	int	tf_isp;
28 	int	tf_ebx;
29 	int	tf_edx;
30 	int	tf_ecx;
31 	int	tf_eax;
32 	int	tf_trapno;
33 	/* below portion defined in 386 hardware */
34 	int	tf_err;
35 	int	tf_eip;
36 	int	tf_cs;
37 	int	tf_eflags;
38 	/* below only when transitting rings (e.g. user to kernel) */
39 	int	tf_esp;
40 	int	tf_ss;
41 };
42 
43 /* Interrupt stack frame */
44 
45 struct intrframe {
46 	int	if_vec;
47 	int	if_ppl;
48 	int	if_es;
49 	int	if_ds;
50 	int	if_edi;
51 	int	if_esi;
52 	int	if_ebp;
53 	int	:32;
54 	int	if_ebx;
55 	int	if_edx;
56 	int	if_ecx;
57 	int	if_eax;
58 	int	:32;		/* for compat with trap frame - trapno */
59 	int	:32;		/* for compat with trap frame - err */
60 	/* below portion defined in 386 hardware */
61 	int	if_eip;
62 	int	if_cs;
63 	int	if_eflags;
64 	/* below only when transitting rings (e.g. user to kernel) */
65 	int	if_esp;
66 	int	if_ss;
67 };
68 
69 /*
70  * Call Gate/System Call Stack Frame
71  */
72 
73 struct syscframe {
74 	int	sf_edi;
75 	int	sf_esi;
76 	int	sf_ebp;
77 	int	:32;		/* redundant save of isp */
78 	int	sf_ebx;
79 	int	sf_edx;
80 	int	sf_ecx;
81 	int	sf_eax;
82 	int	sf_eflags;
83 	/* below portion defined in 386 hardware */
84 /*	int	sf_args[N]; 	/* if call gate copy args enabled!*/
85 	int	sf_eip;
86 	int	sf_cs;
87 	/* below only when transitting rings (e.g. user to kernel) */
88 	int	sf_esp;
89 	int	sf_ss;
90 };
91