88 lines
2.9 KiB
C
88 lines
2.9 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 AUTHORS ``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 REGENTS 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_
|
|
|
|
#define FPRS_DL (1 << 0)
|
|
#define FPRS_DU (1 << 1)
|
|
#define FPRS_FEF (1 << 2)
|
|
|
|
#define FSR_CEXC_NX (1 << 0)
|
|
#define FSR_CEXC_DZ (1 << 1)
|
|
#define FSR_CEXC_UF (1 << 2)
|
|
#define FSR_CEXC_OF (1 << 3)
|
|
#define FSR_CEXC_NV (1 << 4)
|
|
#define FSR_AEXC_NX (1 << 5)
|
|
#define FSR_AEXC_DZ (1 << 6)
|
|
#define FSR_AEXC_UF (1 << 7)
|
|
#define FSR_AEXC_OF (1 << 8)
|
|
#define FSR_AEXC_NV (1 << 9)
|
|
#define FSR_QNE (1 << 13)
|
|
#define FSR_NS (1 << 22)
|
|
#define FSR_TEM_NX (1 << 23)
|
|
#define FSR_TEM_DZ (1 << 24)
|
|
#define FSR_TEM_UF (1 << 25)
|
|
#define FSR_TEM_OF (1 << 26)
|
|
#define FSR_TEM_NV (1 << 27)
|
|
|
|
#define FSR_FCC0_SHIFT 10
|
|
#define FSR_FCC0(x) (((x) >> FSR_FCC0_SHIFT) & 3)
|
|
#define FSR_FTT_SHIFT 14
|
|
#define FSR_FTT(x) (((x) >> FSR_FTT_SHIFT) & 7)
|
|
#define FSR_VER_SHIFT 17
|
|
#define FSR_VER(x) (((x) >> FSR_VER_SHIFT) & 7)
|
|
#define FSR_RD_SHIFT 30
|
|
#define FSR_RD(x) (((x) >> FSR_RD_SHIFT) & 3)
|
|
#define FSR_FCC1_SHIFT 32
|
|
#define FSR_FCC1(x) (((x) >> FSR_FCC1_SHIFT) & 3)
|
|
#define FSR_FCC2_SHIFT 34
|
|
#define FSR_FCC2(x) (((x) >> FSR_FCC2_SHIFT) & 3)
|
|
#define FSR_FCC3_SHIFT 36
|
|
#define FSR_FCC3(x) (((x) >> FSR_FCC3_SHIFT) & 3)
|
|
|
|
/* A block of 8 double-precision (16 single-precision) FP registers. */
|
|
struct fpblock {
|
|
u_long fpq_l[8];
|
|
};
|
|
|
|
struct fpstate {
|
|
struct fpblock fp_fb[4];
|
|
u_long fp_fsr;
|
|
u_long fp_fprs;
|
|
};
|
|
|
|
void fp_init_pcb(struct pcb *);
|
|
int fp_enable_proc(struct proc *);
|
|
/*
|
|
* 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 /* !_MACHINE_FP_H_ */
|