fpu.h revision 1.14
1 1.14 maxv /* $NetBSD: fpu.h,v 1.14 2019/01/20 16:55:21 maxv Exp $ */ 2 1.1 dsl 3 1.2 dsl #ifndef _X86_FPU_H_ 4 1.2 dsl #define _X86_FPU_H_ 5 1.1 dsl 6 1.1 dsl #include <x86/cpu_extended_state.h> 7 1.1 dsl 8 1.1 dsl #ifdef _KERNEL 9 1.2 dsl 10 1.3 dsl struct cpu_info; 11 1.3 dsl struct lwp; 12 1.1 dsl struct trapframe; 13 1.1 dsl 14 1.1 dsl void fpuinit(struct cpu_info *); 15 1.12 maxv void fpuinit_mxcsr_mask(void); 16 1.13 maxv 17 1.14 maxv void fpu_area_save(void *, uint64_t); 18 1.14 maxv void fpu_area_restore(void *, uint64_t); 19 1.13 maxv 20 1.1 dsl void fpusave_lwp(struct lwp *, bool); 21 1.1 dsl void fpusave_cpu(bool); 22 1.1 dsl 23 1.9 maxv void fpu_eagerswitch(struct lwp *, struct lwp *); 24 1.9 maxv 25 1.5 dsl void fpu_set_default_cw(struct lwp *, unsigned int); 26 1.5 dsl 27 1.2 dsl void fputrap(struct trapframe *); 28 1.2 dsl void fpudna(struct trapframe *); 29 1.2 dsl 30 1.3 dsl /* Set all to defaults (eg during exec) */ 31 1.3 dsl void fpu_save_area_clear(struct lwp *, unsigned int); 32 1.3 dsl /* Reset control words only - for signal handlers */ 33 1.3 dsl void fpu_save_area_reset(struct lwp *); 34 1.3 dsl 35 1.6 dsl /* Copy data outside pcb during fork */ 36 1.6 dsl void fpu_save_area_fork(struct pcb *, const struct pcb *); 37 1.6 dsl 38 1.4 dsl /* Load FP registers with user-supplied values */ 39 1.4 dsl void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs); 40 1.4 dsl void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs); 41 1.4 dsl 42 1.4 dsl /* Save FP registers for copy to userspace */ 43 1.4 dsl void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs); 44 1.4 dsl void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs); 45 1.4 dsl 46 1.1 dsl #endif 47 1.1 dsl 48 1.2 dsl #endif /* _X86_FPU_H_ */ 49
Indexes created Wed Oct 22 13:09:56 GMT 2025