849ce31a82
No implementation of fpu_kern_enter() can fail, and it was causing needless error checking boilerplate and confusion. Change the return code to void to match reality. (This trivial change took nine days to land because of the commit hook on sys/dev/random. Please consider removing the hook or otherwise lowering the bar -- secteam never seems to have free time to review patches.) Reported by: Lachlan McIlroy <Lachlan.McIlroy AT isilon.com> Reviewed by: delphij Approved by: secteam (delphij) Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D14380
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Andrew Turner under
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* sponsorship from the FreeBSD Foundation.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_VFP_H_
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#define _MACHINE_VFP_H_
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#ifndef LOCORE
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struct vfpstate {
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__uint128_t vfp_regs[32];
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uint32_t vfp_fpcr;
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uint32_t vfp_fpsr;
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};
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#ifdef _KERNEL
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struct pcb;
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void vfp_init(void);
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void vfp_discard(struct thread *);
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void vfp_restore_state(void);
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void vfp_save_state(struct thread *, struct pcb *);
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struct fpu_kern_ctx;
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/*
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* Flags for fpu_kern_alloc_ctx(), fpu_kern_enter() and fpu_kern_thread().
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*/
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#define FPU_KERN_NORMAL 0x0000
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#define FPU_KERN_NOWAIT 0x0001
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#define FPU_KERN_KTHR 0x0002
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#define FPU_KERN_NOCTX 0x0004
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struct fpu_kern_ctx *fpu_kern_alloc_ctx(u_int);
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void fpu_kern_free_ctx(struct fpu_kern_ctx *);
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void fpu_kern_enter(struct thread *, struct fpu_kern_ctx *, u_int);
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int fpu_kern_leave(struct thread *, struct fpu_kern_ctx *);
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int fpu_kern_thread(u_int);
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int is_fpu_kern_thread(u_int);
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#endif
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#endif
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#endif /* !_MACHINE_VFP_H_ */
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