projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* |
| 2 | * Mach Operating System | |
| 3 | * Copyright (c) 1991,1990,1989 Carnegie Mellon University | |
| 4 | * All Rights Reserved. | |
| 5 | * | |
| 6 | * Permission to use, copy, modify and distribute this software and its | |
| 7 | * documentation is hereby granted, provided that both the copyright | |
| 8 | * notice and this permission notice appear in all copies of the | |
| 9 | * software, derivative works or modified versions, and any portions | |
| 10 | * thereof, and that both notices appear in supporting documentation. | |
| 11 | * | |
| 12 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 13 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
| 14 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 15 | * | |
| 16 | * Carnegie Mellon requests users of this software to return to | |
| 17 | * | |
| 18 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 19 | * School of Computer Science | |
| 20 | * Carnegie Mellon University | |
| 21 | * Pittsburgh PA 15213-3890 | |
| 22 | * | |
| 23 | * any improvements or extensions that they make and grant Carnegie Mellon | |
| 24 | * the rights to redistribute these changes. | |
| 78ed81a3 | 25 | * |
| 26 | * $Id$ | |
| 15637ed4 RG |
27 | */ |
| 28 | ||
| 29 | #ifndef _I386_EFLAGS_H_ | |
| 30 | #define _I386_EFLAGS_H_ | |
| 31 | ||
| 32 | /* | |
| 33 | * i386 flags register | |
| 34 | */ | |
| 35 | #define EFL_CF 0x00000001 /* carry */ | |
| 36 | #define EFL_PF 0x00000004 /* parity of low 8 bits */ | |
| 37 | #define EFL_AF 0x00000010 /* carry out of bit 3 */ | |
| 38 | #define EFL_ZF 0x00000040 /* zero */ | |
| 39 | #define EFL_SF 0x00000080 /* sign */ | |
| 40 | #define EFL_TF 0x00000100 /* trace trap */ | |
| 41 | #define EFL_IF 0x00000200 /* interrupt enable */ | |
| 42 | #define EFL_DF 0x00000400 /* direction */ | |
| 43 | #define EFL_OF 0x00000800 /* overflow */ | |
| 44 | #define EFL_IOPL 0x00003000 /* IO privilege level: */ | |
| 45 | #define EFL_IOPL_KERNEL 0x00000000 /* kernel */ | |
| 46 | #define EFL_IOPL_USER 0x00003000 /* user */ | |
| 47 | #define EFL_NT 0x00004000 /* nested task */ | |
| 48 | #define EFL_RF 0x00010000 /* resume without tracing */ | |
| 49 | #define EFL_VM 0x00020000 /* virtual 8086 mode */ | |
| 50 | ||
| 51 | #define EFL_USER_SET (EFL_IF) | |
| 52 | #define EFL_USER_CLEAR (EFL_IOPL|EFL_NT|EFL_RF) | |
| 53 | ||
| 54 | #endif _I386_EFLAGS_H_ |