| 1 | /* $NetBSD: fpu.h,v 1.6 2014/02/25 22:16:52 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 | |
| 10 | struct cpu_info; |
| 11 | struct lwp; |
| 12 | struct trapframe; |
| 13 | |
| 14 | void fpuinit(struct cpu_info *); |
| 15 | void fpusave_lwp(struct lwp *, bool); |
| 16 | void fpusave_cpu(bool); |
| 17 | |
| 18 | void fpu_set_default_cw(struct lwp *, unsigned int); |
| 19 | |
| 20 | void fputrap(struct trapframe *); |
| 21 | void fpudna(struct trapframe *); |
| 22 | |
| 23 | void process_xmm_to_s87(const struct fxsave *, struct save87 *); |
| 24 | void process_s87_to_xmm(const struct save87 *, struct fxsave *); |
| 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 | |