LCOM1920-T02G10

/*        $NetBSD: fpu.h,v 1.6 2014/02/25 22:16:52 dsl Exp $        */

#ifndef        _X86_FPU_H_

#define        _X86_FPU_H_

#include <x86/cpu_extended_state.h>

#ifdef _KERNEL

struct cpu_info;

struct lwp;

struct trapframe;

void fpuinit(struct cpu_info *);

void fpusave_lwp(struct lwp *, bool);

void fpusave_cpu(bool);

void fpu_set_default_cw(struct lwp *, unsigned int);

void fputrap(struct trapframe *);

void fpudna(struct trapframe *);

void process_xmm_to_s87(const struct fxsave *, struct save87 *);

void process_s87_to_xmm(const struct save87 *, struct fxsave *);

/* Set all to defaults (eg during exec) */

void fpu_save_area_clear(struct lwp *, unsigned int);

/* Reset control words only - for signal handlers */

void fpu_save_area_reset(struct lwp *);

/* Copy data outside pcb during fork */

void fpu_save_area_fork(struct pcb *, const struct pcb *);

/* Load FP registers with user-supplied values */

void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs);

void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs);

/* Save FP registers for copy to userspace */

void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs);

void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs);

#endif

#endif /* _X86_FPU_H_ */