freebsd-dev/sys/sparc64/include/fp.h
Jake Burkholder 5a99bf0775 Change fpblock to be an array of ints instead longs.
Change fp_init_thread to take a thread instead of a pcb so we
can get at the trapframe.
2001-12-29 06:53:19 +00:00

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_ */