fpu.h revision 1.7
1/* $NetBSD: fpu.h,v 1.7 2017/11/03 07:14:24 maxv 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 fpuinit_mxcsr_mask(void); 16void fpusave_lwp(struct lwp *, bool); 17void fpusave_cpu(bool); 18 19void fpu_set_default_cw(struct lwp *, unsigned int); 20 21void fputrap(struct trapframe *); 22void fpudna(struct trapframe *); 23 24void process_xmm_to_s87(const struct fxsave *, struct save87 *); 25void process_s87_to_xmm(const struct save87 *, struct fxsave *); 26 27/* Set all to defaults (eg during exec) */ 28void fpu_save_area_clear(struct lwp *, unsigned int); 29/* Reset control words only - for signal handlers */ 30void fpu_save_area_reset(struct lwp *); 31 32/* Copy data outside pcb during fork */ 33void fpu_save_area_fork(struct pcb *, const struct pcb *); 34 35/* Load FP registers with user-supplied values */ 36void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs); 37void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs); 38 39/* Save FP registers for copy to userspace */ 40void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs); 41void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs); 42 43#endif 44 45#endif /* _X86_FPU_H_ */ 46