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      1 /*	$NetBSD: fpu_extern.h,v 1.11 2022/08/30 01:48:09 rin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #if defined(_KERNEL_OPT)
     33 #include "opt_sparc_arch.h"
     34 #endif
     35 
     36 struct proc;
     37 #ifndef SUN4U
     38 struct fpstate;
     39 struct trapframe;
     40 #else /* SUN4U */
     41 struct fpstate64;
     42 struct trapframe64;
     43 #endif /* SUN4U */
     44 union instr;
     45 struct fpemu;
     46 struct fpn;
     47 
     48 /* fpu.c */
     49 #ifndef SUN4U
     50 int fpu_cleanup(struct lwp *, struct fpstate *);
     51 int fpu_emulate(struct lwp *, struct trapframe *, struct fpstate *);
     52 #else /* SUN4U */
     53 int fpu_cleanup(struct lwp *, struct fpstate64 *);
     54 int fpu_emulate(struct lwp *, struct trapframe64 *, struct fpstate64 *);
     55 #endif /* SUN4U */
     56 int fpu_execute(struct fpemu *, union instr);
     57 
     58 /* fpu_add.c */
     59 struct fpn *fpu_add(struct fpemu *);
     60 
     61 /* fpu_compare.c */
     62 void fpu_compare(struct fpemu *, int);
     63 
     64 /* fpu_div.c */
     65 struct fpn *fpu_div(struct fpemu *);
     66 
     67 /* fpu_explode.c */
     68 int fpu_itof(struct fpn *, u_int);
     69 #ifdef SUN4U
     70 int fpu_xtof(struct fpn *, uint64_t);
     71 #endif /* SUN4U */
     72 int fpu_stof(struct fpn *, u_int);
     73 int fpu_dtof(struct fpn *, u_int, u_int );
     74 int fpu_qtof(struct fpn *, u_int, u_int , u_int , u_int );
     75 void fpu_explode(struct fpemu *, struct fpn *, int, int );
     76 
     77 /* fpu_implode.c */
     78 u_int fpu_ftoi(struct fpemu *, struct fpn *);
     79 #ifdef SUN4U
     80 u_int fpu_ftox(struct fpemu *, struct fpn *, u_int *);
     81 #endif /* SUN4U */
     82 u_int fpu_ftos(struct fpemu *, struct fpn *);
     83 u_int fpu_ftod(struct fpemu *, struct fpn *, u_int *);
     84 u_int fpu_ftoq(struct fpemu *, struct fpn *, u_int *);
     85 void fpu_implode(struct fpemu *, struct fpn *, int, u_int *);
     86 
     87 /* fpu_mul.c */
     88 struct fpn *fpu_mul(struct fpemu *);
     89 
     90 /* fpu_sqrt.c */
     91 struct fpn *fpu_sqrt(struct fpemu *);
     92 
     93 /* fpu_subr.c */
     94 int fpu_shr(struct fpn *, int);
     95 void fpu_norm(struct fpn *);
     96 struct fpn *fpu_newnan(struct fpemu *);
     97