1 /* $NetBSD: fpu.h,v 1.12 2018/06/22 06:22:37 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 10 struct cpu_info; 11 struct lwp; 12 struct trapframe; 13 14 void fpuinit(struct cpu_info *); 15 void fpuinit_mxcsr_mask(void); 16 void fpusave_lwp(struct lwp *, bool); 17 void fpusave_cpu(bool); 18 19 void fpu_eagerswitch(struct lwp *, struct lwp *); 20 21 void fpu_set_default_cw(struct lwp *, unsigned int); 22 23 void fputrap(struct trapframe *); 24 void fpudna(struct trapframe *); 25 26 /* Set all to defaults (eg during exec) */ 27 void fpu_save_area_clear(struct lwp *, unsigned int); 28 /* Reset control words only - for signal handlers */ 29 void fpu_save_area_reset(struct lwp *); 30 31 /* Copy data outside pcb during fork */ 32 void fpu_save_area_fork(struct pcb *, const struct pcb *); 33 34 /* Load FP registers with user-supplied values */ 35 void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs); 36 void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs); 37 38 /* Save FP registers for copy to userspace */ 39 void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs); 40 void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs); 41 42 #endif 43 44 #endif /* _X86_FPU_H_ */ 45