root / lab4 / .minix-src / include / x86 / fpu.h @ 14
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/* $NetBSD: fpu.h,v 1.6 2014/02/25 22:16:52 dsl Exp $ */
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#ifndef _X86_FPU_H_
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#define _X86_FPU_H_
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#include <x86/cpu_extended_state.h> |
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#ifdef _KERNEL
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struct cpu_info;
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struct lwp;
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struct trapframe;
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void fpuinit(struct cpu_info *); |
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void fpusave_lwp(struct lwp *, bool); |
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void fpusave_cpu(bool); |
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void fpu_set_default_cw(struct lwp *, unsigned int); |
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void fputrap(struct trapframe *); |
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void fpudna(struct trapframe *); |
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void process_xmm_to_s87(const struct fxsave *, struct save87 *); |
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void process_s87_to_xmm(const struct save87 *, struct fxsave *); |
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/* Set all to defaults (eg during exec) */
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void fpu_save_area_clear(struct lwp *, unsigned int); |
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/* Reset control words only - for signal handlers */
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void fpu_save_area_reset(struct lwp *); |
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/* Copy data outside pcb during fork */
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void fpu_save_area_fork(struct pcb *, const struct pcb *); |
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/* Load FP registers with user-supplied values */
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void process_write_fpregs_xmm(struct lwp *lwp, const struct fxsave *fpregs); |
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void process_write_fpregs_s87(struct lwp *lwp, const struct save87 *fpregs); |
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/* Save FP registers for copy to userspace */
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void process_read_fpregs_xmm(struct lwp *lwp, struct fxsave *fpregs); |
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void process_read_fpregs_s87(struct lwp *lwp, struct save87 *fpregs); |
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#endif
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#endif /* _X86_FPU_H_ */ |