1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without

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25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * from: @(#)npx.h 5.3 (Berkeley) 1/18/91
33 * $FreeBSD: head/sys/amd64/include/fpu.h 189412 2009-03-05 16:56:16Z jhb $
34 */
35
36/*
37 * Floating Point Data Structures and Constants
38 * W. Jolitz 1/90
39 */
40
41#ifndef _MACHINE_FPU_H_

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68 struct {
69 struct fpacc87 fp_acc;
70 u_char fp_pad[6]; /* padding */
71 } sv_fp[8];
72 struct xmmacc sv_xmm[16];
73 u_char sv_pad[96];
74} __aligned(16);
75
76/*
77 * The hardware default control word for i387's and later coprocessors is
78 * 0x37F, giving:
79 *
80 * round to nearest
81 * 64-bit precision
82 * all exceptions masked.
83 *

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97#define __INITIAL_MXCSR_MASK__ 0xFFBF
98
99#ifdef _KERNEL
100void fpudna(void);
101void fpudrop(void);
102void fpuexit(struct thread *td);
103int fpuformat(void);
104int fpugetregs(struct thread *td, struct savefpu *addr);
105void fpuinit(void);
106void fpusetregs(struct thread *td, struct savefpu *addr);
107int fputrap(void);
108#endif
109
110#endif /* !_MACHINE_FPU_H_ */