| 1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| 3 | * |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 5 | * |
| 6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| 9 | * compliance with the License. The rights granted to you under the License |
| 10 | * may not be used to create, or enable the creation or redistribution of, |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| 13 | * terms of an Apple operating system software license agreement. |
| 14 | * |
| 15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| 17 | * |
| 18 | * The Original Code and all software distributed under the License are |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 23 | * Please see the License for the specific language governing rights and |
| 24 | * limitations under the License. |
| 25 | * |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 27 | */ |
| 28 | /* |
| 29 | * @OSF_COPYRIGHT@ |
| 30 | */ |
| 31 | /* |
| 32 | * Mach Operating System |
| 33 | * Copyright (c) 1992-1989 Carnegie Mellon University |
| 34 | * All Rights Reserved. |
| 35 | * |
| 36 | * Permission to use, copy, modify and distribute this software and its |
| 37 | * documentation is hereby granted, provided that both the copyright |
| 38 | * notice and this permission notice appear in all copies of the |
| 39 | * software, derivative works or modified versions, and any portions |
| 40 | * thereof, and that both notices appear in supporting documentation. |
| 41 | * |
| 42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| 43 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| 44 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| 45 | * |
| 46 | * Carnegie Mellon requests users of this software to return to |
| 47 | * |
| 48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| 49 | * School of Computer Science |
| 50 | * Carnegie Mellon University |
| 51 | * Pittsburgh PA 15213-3890 |
| 52 | * |
| 53 | * any improvements or extensions that they make and grant Carnegie Mellon |
| 54 | * the rights to redistribute these changes. |
| 55 | */ |
| 56 | /* |
| 57 | */ |
| 58 | |
| 59 | #ifndef _I386_FP_SAVE_H_ |
| 60 | #define _I386_FP_SAVE_H_ |
| 61 | |
| 62 | #if defined (__i386__) || defined (__x86_64__) |
| 63 | |
| 64 | /* |
| 65 | * Control register |
| 66 | */ |
| 67 | #define FPC_IE 0x0001 /* enable invalid operation |
| 68 | * exception */ |
| 69 | #define FPC_IM FPC_IE |
| 70 | #define FPC_DE 0x0002 /* enable denormalized operation |
| 71 | * exception */ |
| 72 | #define FPC_DM FPC_DE |
| 73 | #define FPC_ZE 0x0004 /* enable zero-divide exception */ |
| 74 | #define FPC_ZM FPC_ZE |
| 75 | #define FPC_OE 0x0008 /* enable overflow exception */ |
| 76 | #define FPC_OM FPC_OE |
| 77 | #define FPC_UE 0x0010 /* enable underflow exception */ |
| 78 | #define FPC_PE 0x0020 /* enable precision exception */ |
| 79 | #define FPC_PC 0x0300 /* precision control: */ |
| 80 | #define FPC_PC_24 0x0000 /* 24 bits */ |
| 81 | #define FPC_PC_53 0x0200 /* 53 bits */ |
| 82 | #define FPC_PC_64 0x0300 /* 64 bits */ |
| 83 | #define FPC_RC 0x0c00 /* rounding control: */ |
| 84 | #define FPC_RC_RN 0x0000 /* round to nearest or even */ |
| 85 | #define FPC_RC_RD 0x0400 /* round down */ |
| 86 | #define FPC_RC_RU 0x0800 /* round up */ |
| 87 | #define FPC_RC_CHOP 0x0c00 /* chop */ |
| 88 | #define FPC_IC 0x1000 /* infinity control (obsolete) */ |
| 89 | #define FPC_IC_PROJ 0x0000 /* projective infinity */ |
| 90 | #define FPC_IC_AFF 0x1000 /* affine infinity (std) */ |
| 91 | |
| 92 | /* |
| 93 | * Status register |
| 94 | */ |
| 95 | #define FPS_IE 0x0001 /* invalid operation */ |
| 96 | #define FPS_DE 0x0002 /* denormalized operand */ |
| 97 | #define FPS_ZE 0x0004 /* divide by zero */ |
| 98 | #define FPS_OE 0x0008 /* overflow */ |
| 99 | #define FPS_UE 0x0010 /* underflow */ |
| 100 | #define FPS_PE 0x0020 /* precision */ |
| 101 | #define FPS_SF 0x0040 /* stack flag */ |
| 102 | #define FPS_ES 0x0080 /* error summary */ |
| 103 | #define FPS_C0 0x0100 /* condition code bit 0 */ |
| 104 | #define FPS_C1 0x0200 /* condition code bit 1 */ |
| 105 | #define FPS_C2 0x0400 /* condition code bit 2 */ |
| 106 | #define FPS_TOS 0x3800 /* top-of-stack pointer */ |
| 107 | #define FPS_TOS_SHIFT 11 |
| 108 | #define FPS_C3 0x4000 /* condition code bit 3 */ |
| 109 | #define FPS_BUSY 0x8000 /* FPU busy */ |
| 110 | |
| 111 | /* |
| 112 | * Kind of floating-point support provided by kernel. |
| 113 | */ |
| 114 | #define FP_NO 0 /* no floating point */ |
| 115 | #define FP_SOFT 1 /* software FP emulator */ |
| 116 | #define FP_287 2 /* 80287 */ |
| 117 | #define FP_387 3 /* 80387 or 80486 */ |
| 118 | #define FP_FXSR 4 /* Fast save/restore SIMD Extension */ |
| 119 | |
| 120 | #endif /* defined (__i386__) || defined (__x86_64__) */ |
| 121 | |
| 122 | #endif /* _I386_FP_SAVE_H_ */ |