75768c2bf4
VFP code to store the old context, with lazy loading of the new context when needed. FPU_KERN_NOCTX is missing as this is unused in the crypto code this has been tested with, and I am unsure on the requirements of the UEFI Runtime Services. Reviewed by: kib Obtained from: ABT Systeems Ltd Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D8276
70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/*-
|
|
* Copyright (c) 2015 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Andrew Turner under
|
|
* sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_VFP_H_
|
|
#define _MACHINE_VFP_H_
|
|
|
|
|
|
#ifndef LOCORE
|
|
struct vfpstate {
|
|
__uint128_t vfp_regs[32];
|
|
uint32_t vfp_fpcr;
|
|
uint32_t vfp_fpsr;
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
void vfp_init(void);
|
|
void vfp_discard(struct thread *);
|
|
void vfp_restore_state(void);
|
|
void vfp_save_state(struct thread *, struct pcb *);
|
|
|
|
struct fpu_kern_ctx;
|
|
|
|
/*
|
|
* Flags for fpu_kern_alloc_ctx(), fpu_kern_enter() and fpu_kern_thread().
|
|
*/
|
|
#define FPU_KERN_NORMAL 0x0000
|
|
#define FPU_KERN_NOWAIT 0x0001
|
|
#define FPU_KERN_KTHR 0x0002
|
|
|
|
struct fpu_kern_ctx *fpu_kern_alloc_ctx(u_int);
|
|
void fpu_kern_free_ctx(struct fpu_kern_ctx *);
|
|
int fpu_kern_enter(struct thread *, struct fpu_kern_ctx *, u_int);
|
|
int fpu_kern_leave(struct thread *, struct fpu_kern_ctx *);
|
|
int fpu_kern_thread(u_int);
|
|
int is_fpu_kern_thread(u_int);
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif /* !_MACHINE_VFP_H_ */
|