fpu.h revision 1.5
1/* $NetBSD: fpu.h,v 1.5 2014/02/23 22:35:27 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/* Load FP registers with user-supplied values */ 32void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs); 33void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs); 34 35/* Save FP registers for copy to userspace */ 36void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs); 37void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs); 38 39#endif 40 41#endif /* _X86_FPU_H_ */ 42