Annotation of sys/arch/alpha/include/frame.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: frame.h,v 1.3 1996/10/30 22:39:06 niklas Exp $ */
2: /* $NetBSD: frame.h,v 1.3 1996/07/11 05:31:32 cgd Exp $ */
3:
4: /*
5: * Copyright (c) 1994, 1995 Carnegie-Mellon University.
6: * All rights reserved.
7: *
8: * Author: Chris G. Demetriou
9: *
10: * Permission to use, copy, modify and distribute this software and
11: * its documentation is hereby granted, provided that both the copyright
12: * notice and this permission notice appear in all copies of the
13: * software, derivative works or modified versions, and any portions
14: * thereof, and that both notices appear in supporting documentation.
15: *
16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * Carnegie Mellon requests users of this software to return to
21: *
22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
23: * School of Computer Science
24: * Carnegie Mellon University
25: * Pittsburgh PA 15213-3890
26: *
27: * any improvements or extensions that they make and grant Carnegie the
28: * rights to redistribute these changes.
29: */
30:
31: #ifndef _ALPHA_FRAME_H_
32: #define _ALPHA_FRAME_H_
33:
34: #include <machine/alpha_cpu.h>
35:
36: /*
37: * Software trap, exception, and syscall frame.
38: *
39: * Includes "hardware" (PALcode) frame.
40: *
41: * PALcode puts ALPHA_HWFRAME_* fields on stack. We have to add
42: * all of the general-purpose registers except for zero, for sp
43: * (which is automatically saved in the PCB's USP field for entries
44: * from user mode, and which is implicitly saved and restored by the
45: * calling conventions for entries from kernel mode), and (on traps
46: * and exceptions) for a0, a1, and a2 (which are saved by PALcode).
47: */
48:
49: /* Quadword offsets of the registers to be saved. */
50: #define FRAME_V0 0
51: #define FRAME_T0 1
52: #define FRAME_T1 2
53: #define FRAME_T2 3
54: #define FRAME_T3 4
55: #define FRAME_T4 5
56: #define FRAME_T5 6
57: #define FRAME_T6 7
58: #define FRAME_T7 8
59: #define FRAME_S0 9
60: #define FRAME_S1 10
61: #define FRAME_S2 11
62: #define FRAME_S3 12
63: #define FRAME_S4 13
64: #define FRAME_S5 14
65: #define FRAME_S6 15
66: #define FRAME_A3 16
67: #define FRAME_A4 17
68: #define FRAME_A5 18
69: #define FRAME_T8 19
70: #define FRAME_T9 20
71: #define FRAME_T10 21
72: #define FRAME_T11 22
73: #define FRAME_RA 23
74: #define FRAME_T12 24
75: #define FRAME_AT 25
76: #define FRAME_SP 26
77:
78: #define FRAME_SW_SIZE (FRAME_SP + 1)
79: #define FRAME_HW_OFFSET FRAME_SW_SIZE
80:
81: #define FRAME_PS (FRAME_HW_OFFSET + ALPHA_HWFRAME_PS)
82: #define FRAME_PC (FRAME_HW_OFFSET + ALPHA_HWFRAME_PC)
83: #define FRAME_GP (FRAME_HW_OFFSET + ALPHA_HWFRAME_GP)
84: #define FRAME_A0 (FRAME_HW_OFFSET + ALPHA_HWFRAME_A0)
85: #define FRAME_A1 (FRAME_HW_OFFSET + ALPHA_HWFRAME_A1)
86: #define FRAME_A2 (FRAME_HW_OFFSET + ALPHA_HWFRAME_A2)
87:
88: #define FRAME_HW_SIZE ALPHA_HWFRAME_SIZE
89: #define FRAME_SIZE (FRAME_HW_OFFSET + FRAME_HW_SIZE)
90:
91: struct trapframe {
92: unsigned long tf_regs[FRAME_SIZE]; /* See above */
93: };
94:
95: #endif /* _ALPHA_FRAME_H_ */
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