1 /* $NetBSD: fcode.h,v 1.2 2024/01/13 00:44:42 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 39 */ 40 41 #ifndef _M68K_FCODE_H_ 42 #define _M68K_FCODE_H_ 43 44 /* 45 * 680x0 Function Codes. 46 * 47 * Section 4.2 of the 68030 User's Manual describes the address spaces 48 * selected by the Function Code: 49 * 50 * FC2 FC1 FC0 Address space 51 * ----------------------------------------------------------- 52 * 0 0 0 (Undefined, reserved for Motorola) 53 * 0 0 1 User Data space 54 * 0 1 0 User Program space 55 * 0 1 1 (Undefined, reserved for user) 56 * 1 0 0 (Undefined, reserved for Motorola) 57 * 1 0 1 Supervisor Data space 58 * 1 1 0 Supervisor Program space 59 * 1 1 1 CPU space 60 */ 61 #define FC_UNDEF0 0 62 #define FC_USERD 1 /* user data space */ 63 #define FC_USERP 2 /* user program space */ 64 #define FC_UNDEF3 3 65 #define FC_UNDEF4 4 66 #define FC_SUPERD 5 /* supervisor data space */ 67 #define FC_SUPERP 6 /* supervisor program space */ 68 #define FC_CPU 7 /* CPU space */ 69 70 #ifdef _KERNEL 71 72 static inline int 73 getdfc(void) 74 { 75 int rv; 76 77 __asm volatile("movc %%dfc,%0" : "=d" (rv)); 78 79 return rv; 80 } 81 82 static inline int 83 getsfc(void) 84 { 85 int rv; 86 87 __asm volatile("movc %%sfc,%0" : "=d" (rv)); 88 89 return rv; 90 } 91 92 #endif /* _KERNEL */ 93 94 #endif /* _M68K_FCODE_H_ */ 95