56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/*-
|
|
* Copyright 2001 by Thomas Moestl <tmm@FreeBSD.org>. All rights reserved.
|
|
*
|
|
* 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 ``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_FP_H_
|
|
#define _MACHINE_FP_H_
|
|
|
|
/* A block of 8 double-precision (16 single-precision) FP registers. */
|
|
struct fpblock {
|
|
u_int fpb_i[16];
|
|
};
|
|
|
|
struct fpstate {
|
|
struct fpblock fp_fb[4];
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
struct pcb;
|
|
struct thread;
|
|
|
|
void fp_init_thread(struct thread *);
|
|
int fp_enable_thread(struct thread *, struct trapframe *);
|
|
int fp_exception(struct thread *, struct trapframe *, int *);
|
|
/*
|
|
* Note: The pointers passed to the next two functions must be aligned on
|
|
* 64 byte boundaries.
|
|
*/
|
|
void savefpctx(struct fpstate *);
|
|
void restorefpctx(struct fpstate *);
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* !_MACHINE_FP_H_ */
|