69aeb16c07
current CPU, and use it if a CPU is taken offline -add a bool argument to pcu_discard which tells whether the internal "LWP has used the coprocessor" flag should be set or reset. The flag is reported by pcu_used_p(). If set, future accesses should use the state stored in the PCB. If reset, it should be reset to default. The former case is useful for setmcontext(). With that, it should not be necessary anymore to manage the "FPU used" state by an additional MD variable. approved by matt
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/* $NetBSD: altivec.h,v 1.16 2013/08/22 19:50:54 drochner Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _POWERPC_ALTIVEC_H_
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#define _POWERPC_ALTIVEC_H_
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#define VSCR_SA 0x00000001 /* Saturation happended (sticky) */
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#define VSCR_NJ 0x00010000 /* Non Java-IEEE-C9X FP mode */
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#ifdef _KERNEL
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#include <sys/pcu.h>
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#include <powerpc/mcontext.h>
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struct lwp;
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struct vreg;
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struct trapframe;
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extern const pcu_ops_t vec_ops;
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bool vec_used_p(struct lwp *);
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void vec_mark_used(struct lwp *);
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void vec_restore_from_mcontext(struct lwp *, const mcontext_t *);
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bool vec_save_to_mcontext(struct lwp *, mcontext_t *, unsigned int *);
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int vec_siginfo_code(const struct trapframe *);
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static inline void
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vec_load(void)
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{
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pcu_load(&vec_ops);
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}
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static inline void
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vec_save(void)
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{
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pcu_save(&vec_ops);
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}
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static inline void
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vec_discard(void)
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{
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pcu_discard(&vec_ops, false);
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}
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void vec_load_from_vreg(const struct vreg *);
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void vec_unload_to_vreg(struct vreg *);
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/* OEA only */
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void vzeropage(paddr_t);
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void vcopypage(paddr_t, paddr_t); /* dst, src */
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#endif
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#endif /* _POWERPC_ALTIVEC_H_ */
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