fpu.h revision 1.13 
1/*	$NetBSD: fpu.h,v 1.13 2018/10/05 18:51:52 maxv 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 fpuinit_mxcsr_mask(void);
16
17void fpu_area_save(void *);
18void fpu_area_restore(void *);
19
20void fpusave_lwp(struct lwp *, bool);
21void fpusave_cpu(bool);
22
23void fpu_eagerswitch(struct lwp *, struct lwp *);
24
25void fpu_set_default_cw(struct lwp *, unsigned int);
26
27void fputrap(struct trapframe *);
28void fpudna(struct trapframe *);
29
30/* Set all to defaults (eg during exec) */
31void fpu_save_area_clear(struct lwp *, unsigned int);
32/* Reset control words only - for signal handlers */
33void fpu_save_area_reset(struct lwp *);
34
35/* Copy data outside pcb during fork */
36void fpu_save_area_fork(struct pcb *, const struct pcb *);
37
38/* Load FP registers with user-supplied values */
39void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs);
40void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs);
41
42/* Save FP registers for copy to userspace */
43void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs);
44void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs);
45
46#endif
47
48#endif /* _X86_FPU_H_ */
49