fpu.h (10b3b54548f2290bbe8d8f88c59c28d12b7a635d) fpu.h (6cf9a08d2c338e25f0be42326e6880f089156562)
1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without

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68 struct {
69 struct fpacc87 fp_acc;
70 u_char fp_pad[6]; /* padding */
71 } sv_fp[8];
72 struct xmmacc sv_xmm[16];
73 u_char sv_pad[96];
74} __aligned(16);
75
1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without

--- 59 unchanged lines hidden (view full) ---

68 struct {
69 struct fpacc87 fp_acc;
70 u_char fp_pad[6]; /* padding */
71 } sv_fp[8];
72 struct xmmacc sv_xmm[16];
73 u_char sv_pad[96];
74} __aligned(16);
75
76#ifdef _KERNEL
77struct fpu_kern_ctx {
78 struct savefpu hwstate;
79 struct savefpu *prev;
80 uint32_t flags;
81};
82#define FPU_KERN_CTX_FPUINITDONE 0x01
83
84#define PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNFPU) == 0)
85#endif
86
76/*
77 * The hardware default control word for i387's and later coprocessors is
78 * 0x37F, giving:
79 *
80 * round to nearest
81 * 64-bit precision
82 * all exceptions masked.
83 *

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97#define __INITIAL_MXCSR_MASK__ 0xFFBF
98
99#ifdef _KERNEL
100void fpudna(void);
101void fpudrop(void);
102void fpuexit(struct thread *td);
103int fpuformat(void);
104int fpugetregs(struct thread *td, struct savefpu *addr);
87/*
88 * The hardware default control word for i387's and later coprocessors is
89 * 0x37F, giving:
90 *
91 * round to nearest
92 * 64-bit precision
93 * all exceptions masked.
94 *

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108#define __INITIAL_MXCSR_MASK__ 0xFFBF
109
110#ifdef _KERNEL
111void fpudna(void);
112void fpudrop(void);
113void fpuexit(struct thread *td);
114int fpuformat(void);
115int fpugetregs(struct thread *td, struct savefpu *addr);
116int fpugetuserregs(struct thread *td, struct savefpu *addr);
105void fpuinit(void);
106void fpusetregs(struct thread *td, struct savefpu *addr);
117void fpuinit(void);
118void fpusetregs(struct thread *td, struct savefpu *addr);
119void fpusetuserregs(struct thread *td, struct savefpu *addr);
107int fputrap(void);
120int fputrap(void);
121int fpu_kern_enter(struct thread *td, struct fpu_kern_ctx *ctx,
122 u_int flags);
123int fpu_kern_leave(struct thread *td, struct fpu_kern_ctx *ctx);
124int fpu_kern_thread(u_int flags);
125int is_fpu_kern_thread(u_int flags);
126
127/*
128 * Flags for fpu_kern_enter() and fpu_kern_thread().
129 */
130#define FPU_KERN_NORMAL 0x0000
131
108#endif
109
110#endif /* !_MACHINE_FPU_H_ */
132#endif
133
134#endif /* !_MACHINE_FPU_H_ */