1/* $NetBSD: fpu.h,v 1.6 2014/02/25 22:16:52 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 fpu_set_default_cw(struct lwp *, unsigned int);
19
20void fputrap(struct trapframe *);
21void fpudna(struct trapframe *);
22
23void process_xmm_to_s87(const struct fxsave *, struct save87 *);
24void process_s87_to_xmm(const struct save87 *, struct fxsave *);
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