fpu.h revision 1.10 
1/*	$NetBSD: fpu.h,v 1.10 2018/06/19 19:50:19 jdolecek 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(uint32_t);
16void fpusave_lwp(struct lwp *, bool);
17void fpusave_cpu(bool);
18
19void fpu_eagerswitch(struct lwp *, struct lwp *);
20
21void fpu_set_default_cw(struct lwp *, unsigned int);
22
23void fputrap(struct trapframe *);
24void fpudna(struct trapframe *);
25
26/* Set all to defaults (eg during exec) */
27void fpu_save_area_clear(struct lwp *, unsigned int);
28/* Reset control words only - for signal handlers */
29void fpu_save_area_reset(struct lwp *);
30
31/* Copy data outside pcb during fork */
32void fpu_save_area_fork(struct pcb *, const struct pcb *);
33
34/* Load FP registers with user-supplied values */
35void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs);
36void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs);
37
38/* Save FP registers for copy to userspace */
39void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs);
40void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs);
41
42#endif
43
44#endif /* _X86_FPU_H_ */
45