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      1 /*	$NetBSD: altivec.h,v 1.19 2022/05/28 22:16:43 andvar Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Matt Thomas.
      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 #ifndef	_POWERPC_ALTIVEC_H_
     33 #define	_POWERPC_ALTIVEC_H_
     34 
     35 #define	VSCR_SA		0x00000001	/* Saturation happened (sticky) */
     36 #define	VSCR_NJ		0x00010000	/* Non Java-IEEE-C9X FP mode */
     37 
     38 #ifdef _KERNEL
     39 #include <sys/pcu.h>
     40 #include <powerpc/mcontext.h>
     41 
     42 struct lwp;
     43 struct vreg;
     44 struct trapframe;
     45 
     46 extern const pcu_ops_t vec_ops;
     47 
     48 bool	vec_used_p(struct lwp *);
     49 void	vec_mark_used(struct lwp *);
     50 
     51 void	vec_restore_from_mcontext(struct lwp *, const mcontext_t *);
     52 bool	vec_save_to_mcontext(struct lwp *, mcontext_t *, unsigned int *);
     53 
     54 int	vec_siginfo_code(const struct trapframe *);
     55 
     56 static __inline void
     57 vec_load(void)
     58 {
     59 	pcu_load(&vec_ops);
     60 }
     61 
     62 static __inline void
     63 vec_save(lwp_t *l)
     64 {
     65 	pcu_save(&vec_ops, l);
     66 }
     67 
     68 static __inline void
     69 vec_discard(lwp_t *l)
     70 {
     71 	pcu_discard(&vec_ops, l, false);
     72 }
     73 
     74 void	vec_load_from_vreg(const struct vreg *);
     75 void	vec_unload_to_vreg(struct vreg *);
     76 
     77 /* OEA only */
     78 void	vzeropage(paddr_t);
     79 void	vcopypage(paddr_t, paddr_t);	/* dst, src */
     80 #endif
     81 
     82 #endif	/* _POWERPC_ALTIVEC_H_ */
     83