Meg's Mirrors

zig

1	/* $NetBSD: fpu.h,v 1.23.28.1 2026/07/19 15:57:27 martin 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
10	struct cpu_info;
11	struct lwp;
12	struct trapframe;
13
14	void fpuinit(struct cpu_info *);
15	void fpuinit_mxcsr_mask(void);
16
17	void fpu_area_save(void *, uint64_t, bool);
18	void fpu_area_restore(const void *, uint64_t, bool);
19
20	void fpu_save(void);
21
22	void fpu_set_default_cw(struct lwp *, unsigned int);
23
24	void fputrap(struct trapframe *);
25	void fpudna(struct trapframe *);
26
27	void process_xmm_to_s87(const struct fxsave *, struct save87 *);
28	void process_s87_to_xmm(const struct save87 *, struct fxsave *);
29
30	void fpu_clear(struct lwp *, unsigned int);
31	void fpu_sigreset(struct lwp *);
32
33	void fpu_lwp_fork(struct lwp *, struct lwp *);
34	void fpu_lwp_abandon(struct lwp *l);
35
36	void fpu_kern_enter(void);
37	void fpu_kern_leave(void);
38
39	void process_write_fpregs_xmm(struct lwp *, const struct fxsave *);
40	void process_write_fpregs_s87(struct lwp *, const struct save87 *);
41
42	void process_read_fpregs_xmm(struct lwp *, struct fxsave *);
43	void process_read_fpregs_s87(struct lwp *, struct save87 *);
44
45	int process_read_xstate(struct lwp *, struct xstate *);
46	int process_verify_xstate(const struct xstate *);
47	int process_write_xstate(struct lwp *, const struct xstate *);
48
49	bool process_xsave_needed_p(struct lwp *);
50	void process_read_xsave(struct lwp *, const struct xsave_header **, size_t *);
51	int process_verify_xsavelen(struct lwp *, size_t);
52	int process_verify_xsave(struct lwp *, const struct xsave_header *, size_t);
53	void process_write_xsave(struct lwp *, const struct xsave_header *, size_t);
54
55	#endif
56
57	#endif /* _X86_FPU_H_ */