osfmk/i386/eflags.h

   1 /*
   2  * Copyright (c) 2000-2005 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  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52
  53 #ifndef _I386_EFLAGS_H_
  54 #define _I386_EFLAGS_H_
  55
  56 /*
  57  *      i386 flags register
  58  */
  59
  60 #ifndef EFL_CF
  61 #define EFL_CF          0x00000001              /* carry */
  62 #define EFL_PF          0x00000004              /* parity of low 8 bits */
  63 #define EFL_AF          0x00000010              /* carry out of bit 3 */
  64 #define EFL_ZF          0x00000040              /* zero */
  65 #define EFL_SF          0x00000080              /* sign */
  66 #define EFL_TF          0x00000100              /* trace trap */
  67 #define EFL_IF          0x00000200              /* interrupt enable */
  68 #define EFL_DF          0x00000400              /* direction */
  69 #define EFL_OF          0x00000800              /* overflow */
  70 #define EFL_IOPL        0x00003000              /* IO privilege level: */
  71 #define EFL_IOPL_KERNEL 0x00000000                      /* kernel */
  72 #define EFL_IOPL_USER   0x00003000                      /* user */
  73 #define EFL_NT          0x00004000              /* nested task */
  74 #define EFL_RF          0x00010000              /* resume without tracing */
  75 #define EFL_VM          0x00020000              /* virtual 8086 mode */
  76 #define EFL_AC          0x00040000              /* alignment check */
  77 #define EFL_VIF         0x00080000              /* virtual interrupt flag */
  78 #define EFL_VIP         0x00100000              /* virtual interrupt pending */
  79 #define EFL_ID          0x00200000              /* cpuID instruction */
  80 #endif
  81
  82 #define EFL_CLR         0xfff88028
  83 #define EFL_SET         0x00000002
  84
  85 #define EFL_USER_SET    (EFL_IF)
  86 #define EFL_USER_CLEAR  (EFL_IOPL|EFL_NT|EFL_RF)
  87
  88 #endif  /* _I386_EFLAGS_H_ */