![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to frame.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple XNU] / XNU / EXTERNAL_HEADERS / architecture / i386|
Return to frame.h CVS log | Up to [Apple XNU] / XNU / EXTERNAL_HEADERS / architecture / i386 |
1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * Copyright (c) 1992 NeXT Computer, Inc.
24: *
25: * Intel386 Family: Processor exception frame.
26: *
27: * HISTORY
28: *
29: * 31 August 1992 ? at NeXT
30: * Added v86 mode stuff.
31: *
32: * 8 June 1992 ? at NeXT
33: * Changed name of write field in err_code_t
34: * which collided with write() in shlib.
35: *
36: * 30 March 1992 ? at NeXT
37: * Created.
38: */
39:
40: /*
41: * Format of the error code
42: * generated by the hardware
43: * for certain exceptions.
44: */
45:
46: typedef union err_code {
47: struct err_code_normal {
48: unsigned int ext :1,
49: tbl :2,
50: #define ERR_GDT 0
51: #define ERR_IDT 1
52: #define ERR_LDT 2
53: index :13,
54: :16;
55: } normal;
56: struct err_code_pgfault {
57: unsigned int prot :1,
58: wrtflt :1,
59: user :1,
60: :29;
61: } pgfault;
62: } err_code_t;
63:
64: #import <architecture/i386/sel.h>
65:
66: /*
67: * The actual hardware exception frame
68: * is variable in size. An error code is
69: * only pushed for certain exceptions.
70: * Previous stack information is only
71: * pushed for exceptions that cause a
72: * change in privilege level. The dpl
73: * field of the saved CS selector can be
74: * used to determine whether this is the
75: * case. If the interrupted task was
76: * executing in v86 mode, then the data
77: * segment registers are also present in
78: * the exception frame (in addition to
79: * previous stack information). This
80: * case can be determined by examining
81: * eflags.
82: */
83:
84: typedef struct except_frame {
85: err_code_t err;
86: unsigned int eip;
87: sel_t cs;
88: unsigned int :0;
89: unsigned int eflags;
90: unsigned int esp;
91: sel_t ss;
92: unsigned int :0;
93: unsigned short v_es;
94: unsigned int :0;
95: unsigned short v_ds;
96: unsigned int :0;
97: unsigned short v_fs;
98: unsigned int :0;
99: unsigned short v_gs;
100: unsigned int :0;
101: } except_frame_t;
102:
103: /*
104: * Values in eflags.
105: */
106:
107: #ifndef EFL_CF /* FIXME */
108: #define EFL_CF 0x00001
109: #define EFL_PF 0x00004
110: #define EFL_AF 0x00010
111: #define EFL_ZF 0x00040
112: #define EFL_SF 0x00080
113: #define EFL_TF 0x00100
114: #define EFL_IF 0x00200
115: #define EFL_DF 0x00400
116: #define EFL_OF 0x00800
117: #define EFL_IOPL 0x03000
118: #define EFL_NT 0x04000
119: #define EFL_RF 0x10000
120: #define EFL_VM 0x20000
121: #define EFL_AC 0x40000
122: #endif
123:
124: #define EFL_CLR 0xfff88028
125: #define EFL_SET 0x00000002
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.