fpu.h revision 1.4 
1/*	$NetBSD: fpu.h,v 1.4 2014/02/15 22:20:42 dsl Exp $	*/
2
3#ifndef	_X86_FPU_H_
4#define	_X86_FPU_H_
5
6#include <x86/cpu_extended_state.h>
7
8#ifdef _KERNEL
9
10struct cpu_info;
11struct lwp;
12struct trapframe;
13
14void fpuinit(struct cpu_info *);
15void fpusave_lwp(struct lwp *, bool);
16void fpusave_cpu(bool);
17
18void fputrap(struct trapframe *);
19void fpudna(struct trapframe *);
20
21void process_xmm_to_s87(const struct fxsave *, struct save87 *);
22void process_s87_to_xmm(const struct save87 *, struct fxsave *);
23
24/* Set all to defaults (eg during exec) */
25void fpu_save_area_clear(struct lwp *, unsigned int);
26/* Reset control words only - for signal handlers */
27void fpu_save_area_reset(struct lwp *);
28
29/* Load FP registers with user-supplied values */
30void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs);
31void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs);
32
33/* Save FP registers for copy to userspace */
34void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs);
35void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs);
36
37#endif
38
39#endif /* _X86_FPU_H_ */
40