/* $OpenBSD: fpu.h,v 1.2 2011/03/23 16:54:34 pirofti Exp $ */ /* $NetBSD: fpu.h,v 1.4 2001/04/26 03:10:46 ross Exp $ */ /*- * Copyright (c) 2001 Ross Harvey * All rights reserved. * * This software was written for NetBSD. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _MACHINE_FPU_H_ #define _MACHINE_FPU_H_ #define _FP_C_DEF(n) (1UL << (n)) /* * Most of these next definitions were moved from <ieeefp.h>. Apparently the * names happen to match those exported by Compaq and Linux from their fpu.h * files. */ #define FPCR_SUM _FP_C_DEF(63) #define FPCR_INED _FP_C_DEF(62) #define FPCR_UNFD _FP_C_DEF(61) #define FPCR_UNDZ _FP_C_DEF(60) #define FPCR_DYN(rm) ((unsigned long)(rm) << 58) #define FPCR_IOV _FP_C_DEF(57) #define FPCR_INE _FP_C_DEF(56) #define FPCR_UNF _FP_C_DEF(55) #define FPCR_OVF _FP_C_DEF(54) #define FPCR_DZE _FP_C_DEF(53) #define FPCR_INV _FP_C_DEF(52) #define FPCR_OVFD _FP_C_DEF(51) #define FPCR_DZED _FP_C_DEF(50) #define FPCR_INVD _FP_C_DEF(49) #define FPCR_DNZ _FP_C_DEF(48) #define FPCR_DNOD _FP_C_DEF(47) #define FPCR_MIRRORED (FPCR_INE | FPCR_UNF | FPCR_OVF | FPCR_DZE | FPCR_INV) #define FPCR_MIR_START 52 /* * The AARM specifies the bit positions of the software word used for * user mode interface to the control and status of the kernel completion * routines. Although it largely just redefines the FPCR, it shuffles * the bit order. The names of the bits are defined in the AARM, and * the definition prefix can easily be determined from public domain * programs written to either the Compaq or Linux interfaces, which * appear to be identical. */ #define IEEE_STATUS_DNO _FP_C_DEF(22) #define IEEE_STATUS_INE _FP_C_DEF(21) #define IEEE_STATUS_UNF _FP_C_DEF(20) #define IEEE_STATUS_OVF _FP_C_DEF(19) #define IEEE_STATUS_DZE _FP_C_DEF(18) #define IEEE_STATUS_INV _FP_C_DEF(17) #define IEEE_TRAP_ENABLE_DNO _FP_C_DEF(6) #define IEEE_TRAP_ENABLE_INE _FP_C_DEF(5) #define IEEE_TRAP_ENABLE_UNF _FP_C_DEF(4) #define IEEE_TRAP_ENABLE_OVF _FP_C_DEF(3) #define IEEE_TRAP_ENABLE_DZE _FP_C_DEF(2) #define IEEE_TRAP_ENABLE_INV _FP_C_DEF(1) #define IEEE_INHERIT _FP_C_DEF(14) #define IEEE_MAP_UMZ _FP_C_DEF(13) #define IEEE_MAP_DMZ _FP_C_DEF(12) #define FP_C_MIRRORED (IEEE_STATUS_INE | IEEE_STATUS_UNF | IEEE_STATUS_OVF\ | IEEE_STATUS_DZE | IEEE_STATUS_INV) #define FP_C_MIR_START 17 #ifdef _KERNEL #define FLD_MASK(len) ((1UL << (len)) - 1) #define FLD_CLEAR(obj, origin, len) \ ((obj) & ~(FLD_MASK(len) << (origin))) #define FLD_INSERT(obj, origin, len, value) \ (FLD_CLEAR(obj, origin, len) | (value) << origin) #define FP_C_TO_OPENBSD_MASK(fp_c) ((fp_c) >> 1 & 0x3f) #define FP_C_TO_OPENBSD_FLAG(fp_c) ((fp_c) >> 17 & 0x3f) #define OPENBSD_MASK_TO_FP_C(m) (((m) & 0x3f) << 1) #define OPENBSD_FLAG_TO_FP_C(s) (((s) & 0x3f) << 17) #define CLEAR_FP_C_MASK(fp_c) ((fp_c) & ~(0x3f << 1)) #define CLEAR_FP_C_FLAG(fp_c) ((fp_c) & ~(0x3f << 17)) #define SET_FP_C_MASK(fp_c, m) (CLEAR_FP_C_MASK(fp_c) | OPENBSD_MASK_TO_FP_C(m)) #define SET_FP_C_FLAG(fp_c, m) (CLEAR_FP_C_FLAG(fp_c) | OPENBSD_FLAG_TO_FP_C(m)) #endif #endif
