1 /* $OpenBSD: sys_machdep.c,v 1.7 2008/06/26 05:42:08 ray Exp $ */ 2 /* $NetBSD: sys_machdep.c,v 1.14 2002/01/14 00:53:16 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 2000 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. 35 * All rights reserved. 36 * 37 * Author: Chris G. Demetriou 38 * 39 * Permission to use, copy, modify and distribute this software and 40 * its documentation is hereby granted, provided that both the copyright 41 * notice and this permission notice appear in all copies of the 42 * software, derivative works or modified versions, and any portions 43 * thereof, and that both notices appear in supporting documentation. 44 * 45 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 46 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 47 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 48 * 49 * Carnegie Mellon requests users of this software to return to 50 * 51 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 52 * School of Computer Science 53 * Carnegie Mellon University 54 * Pittsburgh PA 15213-3890 55 * 56 * any improvements or extensions that they make and grant Carnegie the 57 * rights to redistribute these changes. 58 */ 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #ifndef NO_IEEE 63 #include <sys/device.h> 64 #include <sys/proc.h> 65 #endif 66 67 #include <sys/mount.h> 68 #include <sys/syscallargs.h> 69 70 #ifndef NO_IEEE 71 #include <machine/fpu.h> 72 #include <machine/sysarch.h> 73 74 #include <dev/pci/pcivar.h> 75 76 int 77 sys_sysarch(struct proc *p, void *v, register_t *retval) 78 { 79 struct sys_sysarch_args /* { 80 syscallarg(int) op; 81 syscallarg(void *) parms; 82 } */ *uap = v; 83 int error = 0; 84 85 switch(SCARG(uap, op)) { 86 case ALPHA_FPGETMASK: 87 *retval = FP_C_TO_OPENBSD_MASK(p->p_md.md_flags); 88 break; 89 case ALPHA_FPGETSTICKY: 90 *retval = FP_C_TO_OPENBSD_FLAG(p->p_md.md_flags); 91 break; 92 case ALPHA_FPSETMASK: 93 case ALPHA_FPSETSTICKY: 94 { 95 fp_except m; 96 u_int64_t md_flags; 97 struct alpha_fp_except_args args; 98 99 error = copyin(SCARG(uap, parms), &args, sizeof args); 100 if (error) 101 return error; 102 m = args.mask; 103 md_flags = p->p_md.md_flags; 104 switch (SCARG(uap, op)) { 105 case ALPHA_FPSETMASK: 106 *retval = FP_C_TO_OPENBSD_MASK(md_flags); 107 md_flags = SET_FP_C_MASK(md_flags, m); 108 break; 109 case ALPHA_FPSETSTICKY: 110 *retval = FP_C_TO_OPENBSD_FLAG(md_flags); 111 md_flags = SET_FP_C_FLAG(md_flags, m); 112 break; 113 } 114 alpha_write_fp_c(p, md_flags); 115 break; 116 } 117 case ALPHA_GET_FP_C: 118 { 119 struct alpha_fp_c_args args; 120 121 args.fp_c = alpha_read_fp_c(p); 122 error = copyout(&args, SCARG(uap, parms), sizeof args); 123 break; 124 } 125 case ALPHA_SET_FP_C: 126 { 127 struct alpha_fp_c_args args; 128 129 error = copyin(SCARG(uap, parms), &args, sizeof args); 130 if (error) 131 return (error); 132 if ((args.fp_c >> 63) != 0) 133 args.fp_c |= IEEE_INHERIT; 134 alpha_write_fp_c(p, args.fp_c); 135 break; 136 } 137 138 default: 139 error = EINVAL; 140 break; 141 } 142 143 return (error); 144 } 145 #else 146 int sys_sysarch(struct proc *p, void *v, register_t *retval) 147 { 148 return (ENOSYS); 149 } 150 #endif 151