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/*
* include/asm-i386/i387.h
*
* Copyright (C) 1994 Linus Torvalds
*
* Pentium III FXSR, SSE support
* General FPU state handling cleanups
* Gareth Hughes <gareth@valinux.com>, May 2000
*/
#ifndef __ASM_I386_I387_H
#define __ASM_I386_I387_H
#include <xen/types.h>
/* Byte offset of the stored word size within the FXSAVE area/portion. */
#define FPU_WORD_SIZE_OFFSET 511
struct ix87_env {
uint16_t fcw, _res0;
uint16_t fsw, _res1;
uint16_t ftw, _res2;
uint32_t fip;
uint16_t fcs;
uint16_t fop;
uint32_t fdp;
uint16_t fds, _res6;
};
void vcpu_restore_fpu_nonlazy(struct vcpu *v, bool need_stts);
void vcpu_restore_fpu_lazy(struct vcpu *v);
void vcpu_save_fpu(struct vcpu *v);
void save_fpu_enable(void);
int vcpu_init_fpu(struct vcpu *v);
struct xsave_struct;
void vcpu_setup_fpu(struct vcpu *v, struct xsave_struct *xsave_area,
const void *data, unsigned int fcw_default);
void vcpu_destroy_fpu(struct vcpu *v);
#endif /* __ASM_I386_I387_H */
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