mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* $NetBSD: fp.h,v 1.1 2001/01/10 19:02:06 bjh21 Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1995 Mark Brinicombe.
|
|
* Copyright (c) 1995 Brini.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software written for Brini by Mark Brinicombe
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Brini.
|
|
* 4. The name of the company nor the name of the author may be used to
|
|
* endorse or promote products derived from this software without specific
|
|
* prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
|
|
*
|
|
* RiscBSD kernel project
|
|
*
|
|
* fp.h
|
|
*
|
|
* FP info
|
|
*
|
|
* Created : 10/10/95
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_FP_H
|
|
#define _MACHINE_FP_H
|
|
|
|
/*
|
|
* An extended precision floating point number
|
|
*/
|
|
|
|
typedef struct fp_extended_precision {
|
|
u_int32_t fp_exponent;
|
|
u_int32_t fp_mantissa_hi;
|
|
u_int32_t fp_mantissa_lo;
|
|
} fp_extended_precision_t;
|
|
|
|
typedef struct fp_extended_precision fp_reg_t;
|
|
|
|
/*
|
|
* Information about the FPE-SP state that is stored in the pcb
|
|
*
|
|
* This needs to move and be hidden from userland.
|
|
*/
|
|
|
|
struct fpe_sp_state {
|
|
unsigned int fp_flags;
|
|
unsigned int fp_sr;
|
|
unsigned int fp_cr;
|
|
fp_reg_t fp_registers[16];
|
|
};
|
|
|
|
/*
|
|
* Type for a saved FP context, if we want to translate the context to a
|
|
* user-readable form
|
|
*/
|
|
|
|
typedef struct {
|
|
u_int32_t fpsr;
|
|
fp_extended_precision_t regs[8];
|
|
} fp_state_t;
|
|
|
|
#endif /* _MACHINE_FP_H_ */
|
|
|
|
/* End of fp.h */
|